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E-cigarettes may be synonymous with vaping to most physicians, but there are other ways for patients to inhale nicotine or tetrahydrocannabinol-containing aerosols, according to investigators at the Cleveland Clinic.

Devices such as water pipes and techniques like dipping and dabbing “are increasingly popular, and use may not be recognized through a traditional substance use history,” Humberto Choi, MD, and associates wrote in the Annals of the American Thoracic Society.

These “alternate aerosol inhalation methods” have been poorly described thus far, so little is known about their scope of use and potential health impact, they noted.

Dripping involves an e-cigarette modified to expose the heating coil. The e-cigarette liquid is dripped directly onto the hot coil, which produces immediate aerosolization and results in a thicker cloud.

Dripping “may expose users to higher levels of nicotine compared to e-cigarette inhalation” and lead to “increased release of volatile aldehydes as a result of the higher heating potential of direct atomizer exposure,” the investigators suggested.

Water pipes, or bongs, produce both smoke and vapor, although an electronic vaporizer can be attached to create a “vape bong.” About 21% of daily cannabis users report using a bong, but tobacco inhalation is less common. Cases of severe pulmonary infections have been associated with bong use, along with a couple of tuberculosis clusters, Dr. Choi and associates said.

Dabbing uses butane-extracted, concentrated cannabis oil inhaled through a modified water pipe or bong or a smaller device called a “dab pen.” A small amount, or “dab,” of the product is placed on the “nail,” which replaces the bowl of the water pipe, heated with a blowtorch, and inhaled through the pipe, the researchers explained.

The prevalence of dabbing is unknown, but “the most recent Monitoring the Future survey of high school seniors shows that 11.9% of students have used a marijuana vaporizer at some point in their life,” they said.

Besides the fire risks involved in creating the material needed for dabbing – use of heating plates, ovens, and devices for removing butane vapors – inhalation of residual butane vapors could lead to vomiting, cardiac arrhythmias, acute encephalopathy, and respiratory depression, Dr. Choi and associates said.

Nicotine dependence is also a concern, as is the possibility of withdrawal symptoms. “Patients presenting with prolonged and severe vomiting, psychotic symptoms, or other acute neuropsychiatric symptoms should raise the suspicion of [tetrahydrocannabinol]-containing products especially synthetic cannabinoids,” they wrote.

rfranki@mdedge.com

SOURCE: Choi H et al. Ann Am Thorac Soc. 2020 Oct 14. doi: 10.1513/AnnalsATS.202005-511CME.

E-cigarettes may be synonymous with vaping to most physicians, but there are other ways for patients to inhale nicotine or tetrahydrocannabinol-containing aerosols, according to investigators at the Cleveland Clinic.

Devices such as water pipes and techniques like dipping and dabbing “are increasingly popular, and use may not be recognized through a traditional substance use history,” Humberto Choi, MD, and associates wrote in the Annals of the American Thoracic Society.

These “alternate aerosol inhalation methods” have been poorly described thus far, so little is known about their scope of use and potential health impact, they noted.

Dripping involves an e-cigarette modified to expose the heating coil. The e-cigarette liquid is dripped directly onto the hot coil, which produces immediate aerosolization and results in a thicker cloud.

Dripping “may expose users to higher levels of nicotine compared to e-cigarette inhalation” and lead to “increased release of volatile aldehydes as a result of the higher heating potential of direct atomizer exposure,” the investigators suggested.

Water pipes, or bongs, produce both smoke and vapor, although an electronic vaporizer can be attached to create a “vape bong.” About 21% of daily cannabis users report using a bong, but tobacco inhalation is less common. Cases of severe pulmonary infections have been associated with bong use, along with a couple of tuberculosis clusters, Dr. Choi and associates said.

Dabbing uses butane-extracted, concentrated cannabis oil inhaled through a modified water pipe or bong or a smaller device called a “dab pen.” A small amount, or “dab,” of the product is placed on the “nail,” which replaces the bowl of the water pipe, heated with a blowtorch, and inhaled through the pipe, the researchers explained.

The prevalence of dabbing is unknown, but “the most recent Monitoring the Future survey of high school seniors shows that 11.9% of students have used a marijuana vaporizer at some point in their life,” they said.

Besides the fire risks involved in creating the material needed for dabbing – use of heating plates, ovens, and devices for removing butane vapors – inhalation of residual butane vapors could lead to vomiting, cardiac arrhythmias, acute encephalopathy, and respiratory depression, Dr. Choi and associates said.

Nicotine dependence is also a concern, as is the possibility of withdrawal symptoms. “Patients presenting with prolonged and severe vomiting, psychotic symptoms, or other acute neuropsychiatric symptoms should raise the suspicion of [tetrahydrocannabinol]-containing products especially synthetic cannabinoids,” they wrote.

rfranki@mdedge.com

SOURCE: Choi H et al. Ann Am Thorac Soc. 2020 Oct 14. doi: 10.1513/AnnalsATS.202005-511CME.

E-cigarettes may be synonymous with vaping to most physicians, but there are other ways for patients to inhale nicotine or tetrahydrocannabinol-containing aerosols, according to investigators at the Cleveland Clinic.

Devices such as water pipes and techniques like dipping and dabbing “are increasingly popular, and use may not be recognized through a traditional substance use history,” Humberto Choi, MD, and associates wrote in the Annals of the American Thoracic Society.

These “alternate aerosol inhalation methods” have been poorly described thus far, so little is known about their scope of use and potential health impact, they noted.

Dripping involves an e-cigarette modified to expose the heating coil. The e-cigarette liquid is dripped directly onto the hot coil, which produces immediate aerosolization and results in a thicker cloud.

Dripping “may expose users to higher levels of nicotine compared to e-cigarette inhalation” and lead to “increased release of volatile aldehydes as a result of the higher heating potential of direct atomizer exposure,” the investigators suggested.

Water pipes, or bongs, produce both smoke and vapor, although an electronic vaporizer can be attached to create a “vape bong.” About 21% of daily cannabis users report using a bong, but tobacco inhalation is less common. Cases of severe pulmonary infections have been associated with bong use, along with a couple of tuberculosis clusters, Dr. Choi and associates said.

Dabbing uses butane-extracted, concentrated cannabis oil inhaled through a modified water pipe or bong or a smaller device called a “dab pen.” A small amount, or “dab,” of the product is placed on the “nail,” which replaces the bowl of the water pipe, heated with a blowtorch, and inhaled through the pipe, the researchers explained.

The prevalence of dabbing is unknown, but “the most recent Monitoring the Future survey of high school seniors shows that 11.9% of students have used a marijuana vaporizer at some point in their life,” they said.

Besides the fire risks involved in creating the material needed for dabbing – use of heating plates, ovens, and devices for removing butane vapors – inhalation of residual butane vapors could lead to vomiting, cardiac arrhythmias, acute encephalopathy, and respiratory depression, Dr. Choi and associates said.

Nicotine dependence is also a concern, as is the possibility of withdrawal symptoms. “Patients presenting with prolonged and severe vomiting, psychotic symptoms, or other acute neuropsychiatric symptoms should raise the suspicion of [tetrahydrocannabinol]-containing products especially synthetic cannabinoids,” they wrote.

rfranki@mdedge.com

SOURCE: Choi H et al. Ann Am Thorac Soc. 2020 Oct 14. doi: 10.1513/AnnalsATS.202005-511CME.

New data show that new CFTR modulator therapies for cystic fibrosis may be driving down hospitalizations in this patient population.

The triple combination therapy elexacaftor/tezacaftor/ivacaftor was associated with a near elimination of hospital stays in one hospital in Oregon, according to a new report. The hospital savings still weren’t nearly enough to pay for the cost of therapy, but the study underscores what many institutions have observed and adds a new layer to the view of quality of life improvements that the new therapy brings.

“After we started prescribing it, we noticed pretty quickly that hospitalizations appeared to be declining after patients started triple combination therapy, and we were hearing [similar reports] from other centers as well. We wanted to quantify this,” Eric C. Walter, MD, a pulmonologist at the Kaiser Permanente Cystic Fibrosis Clinic in Portland, Ore., said during a presentation of the results at the virtual North American Cystic Fibrosis Conference.

“We’re seeing that across the board in real practice, the number of cystic fibrosis patients that have to be hospitalized since starting this triple combination has gone down,” Robert Giusti, MD, said in an interview. “When they’ve had pulmonary exacerbations in the past, it was frequently because they failed outpatient antibiotics, but I think with triple combination therapy, if they do get sick, the likelihood is they will respond to oral antibiotics, so they may not need that prolonged IV course in the hospital.” Dr. Giusti is clinical professor of pediatrics at New York University and director of the Pediatric Cystic Fibrosis Center. He was not involved in the study.

The therapy gained Food and Drug Administration approval in 2019 for the treatment of individuals with CF who are aged 12 years and older, and who have at least one copy of the F508del mutation. Its cost is about $317,000 per year within the Kaiser Permanente system, according to Dr. Walter. His group compared hospitalization days for CF-related diagnoses from Jan. 1 through Aug. 31, 2020, before and after initiation of triple combination therapy.

Of 47 eligible patients, 32 initiated therapy during the study period; 38% had severe lung disease, defined by forced expiratory volume in 1 second (FEV₁₎ value less than 40%. In 2020, before initiation of therapy, there were an average of 27 hospital days per month, all among patients with severe lung disease.

Among the therapy group, there were no hospitalizations after initiation of therapy through Aug. 31. Dr. Walter noted that the first hospitalization of a patient on triple combination therapy didn’t occur until early October.

At an average daily cost of $6,700, the researchers calculated that triple combination therapy saved about $189,000 per month in this group of patients. Comparing numbers to previous years, in which some patients with FEV₁ greater than 40% were hospitalized, the researchers calculated that the therapy saved about $151,000 per month among individuals with severe lung disease: Patients with severe lung disease contributed about 80% to total hospital costs.

The drug itself for the whole group cost $845,000, dwarfing the $189,000 savings overall. But among patients with severe disease, hospitalization savings were about $151,000 per month, while the drug cost in this group was $316,800 per month.

Cost savings are important, but the improvement in quality of life for a patient – avoiding hospitalization, fewer impacts on work and education – should not be overlooked, according to Ryan Perkins, MD, a pediatric and adult pulmonary fellow at Boston Children’s Hospital and Brigham and Women’s Hospital, who moderated the session. “Some of these aren’t things people typically quantify and assign a price tag to,” Dr. Perkins said in an interview.

A big limitation of the work is that it was conducted during the COVID-19 pandemic, which may have reduced hospitalizations. “We did have patients that called in, told us they were sick, that they needed to be treated for an exacerbation but didn’t want to go to the hospital,” said Dr. Walter. To help adjust for this, Dr. Walter’s team plans to compare intravenous antibiotic exposure before and after triple combination therapy, reasoning that it could help clarify the pandemic’s impact on hospitalizations.

Dr. Walter, Dr. Giusti, and Dr. Perkins have no relevant financial disclosures.

SOURCE: Walter E et al. NACFC 2020. Abstract 795.

New data show that new CFTR modulator therapies for cystic fibrosis may be driving down hospitalizations in this patient population.

The triple combination therapy elexacaftor/tezacaftor/ivacaftor was associated with a near elimination of hospital stays in one hospital in Oregon, according to a new report. The hospital savings still weren’t nearly enough to pay for the cost of therapy, but the study underscores what many institutions have observed and adds a new layer to the view of quality of life improvements that the new therapy brings.

“After we started prescribing it, we noticed pretty quickly that hospitalizations appeared to be declining after patients started triple combination therapy, and we were hearing [similar reports] from other centers as well. We wanted to quantify this,” Eric C. Walter, MD, a pulmonologist at the Kaiser Permanente Cystic Fibrosis Clinic in Portland, Ore., said during a presentation of the results at the virtual North American Cystic Fibrosis Conference.

“We’re seeing that across the board in real practice, the number of cystic fibrosis patients that have to be hospitalized since starting this triple combination has gone down,” Robert Giusti, MD, said in an interview. “When they’ve had pulmonary exacerbations in the past, it was frequently because they failed outpatient antibiotics, but I think with triple combination therapy, if they do get sick, the likelihood is they will respond to oral antibiotics, so they may not need that prolonged IV course in the hospital.” Dr. Giusti is clinical professor of pediatrics at New York University and director of the Pediatric Cystic Fibrosis Center. He was not involved in the study.

The therapy gained Food and Drug Administration approval in 2019 for the treatment of individuals with CF who are aged 12 years and older, and who have at least one copy of the F508del mutation. Its cost is about $317,000 per year within the Kaiser Permanente system, according to Dr. Walter. His group compared hospitalization days for CF-related diagnoses from Jan. 1 through Aug. 31, 2020, before and after initiation of triple combination therapy.

Of 47 eligible patients, 32 initiated therapy during the study period; 38% had severe lung disease, defined by forced expiratory volume in 1 second (FEV₁₎ value less than 40%. In 2020, before initiation of therapy, there were an average of 27 hospital days per month, all among patients with severe lung disease.

Among the therapy group, there were no hospitalizations after initiation of therapy through Aug. 31. Dr. Walter noted that the first hospitalization of a patient on triple combination therapy didn’t occur until early October.

At an average daily cost of $6,700, the researchers calculated that triple combination therapy saved about $189,000 per month in this group of patients. Comparing numbers to previous years, in which some patients with FEV₁ greater than 40% were hospitalized, the researchers calculated that the therapy saved about $151,000 per month among individuals with severe lung disease: Patients with severe lung disease contributed about 80% to total hospital costs.

The drug itself for the whole group cost $845,000, dwarfing the $189,000 savings overall. But among patients with severe disease, hospitalization savings were about $151,000 per month, while the drug cost in this group was $316,800 per month.

Cost savings are important, but the improvement in quality of life for a patient – avoiding hospitalization, fewer impacts on work and education – should not be overlooked, according to Ryan Perkins, MD, a pediatric and adult pulmonary fellow at Boston Children’s Hospital and Brigham and Women’s Hospital, who moderated the session. “Some of these aren’t things people typically quantify and assign a price tag to,” Dr. Perkins said in an interview.

A big limitation of the work is that it was conducted during the COVID-19 pandemic, which may have reduced hospitalizations. “We did have patients that called in, told us they were sick, that they needed to be treated for an exacerbation but didn’t want to go to the hospital,” said Dr. Walter. To help adjust for this, Dr. Walter’s team plans to compare intravenous antibiotic exposure before and after triple combination therapy, reasoning that it could help clarify the pandemic’s impact on hospitalizations.

Dr. Walter, Dr. Giusti, and Dr. Perkins have no relevant financial disclosures.

SOURCE: Walter E et al. NACFC 2020. Abstract 795.

New data show that new CFTR modulator therapies for cystic fibrosis may be driving down hospitalizations in this patient population.

The triple combination therapy elexacaftor/tezacaftor/ivacaftor was associated with a near elimination of hospital stays in one hospital in Oregon, according to a new report. The hospital savings still weren’t nearly enough to pay for the cost of therapy, but the study underscores what many institutions have observed and adds a new layer to the view of quality of life improvements that the new therapy brings.

“After we started prescribing it, we noticed pretty quickly that hospitalizations appeared to be declining after patients started triple combination therapy, and we were hearing [similar reports] from other centers as well. We wanted to quantify this,” Eric C. Walter, MD, a pulmonologist at the Kaiser Permanente Cystic Fibrosis Clinic in Portland, Ore., said during a presentation of the results at the virtual North American Cystic Fibrosis Conference.

“We’re seeing that across the board in real practice, the number of cystic fibrosis patients that have to be hospitalized since starting this triple combination has gone down,” Robert Giusti, MD, said in an interview. “When they’ve had pulmonary exacerbations in the past, it was frequently because they failed outpatient antibiotics, but I think with triple combination therapy, if they do get sick, the likelihood is they will respond to oral antibiotics, so they may not need that prolonged IV course in the hospital.” Dr. Giusti is clinical professor of pediatrics at New York University and director of the Pediatric Cystic Fibrosis Center. He was not involved in the study.

The therapy gained Food and Drug Administration approval in 2019 for the treatment of individuals with CF who are aged 12 years and older, and who have at least one copy of the F508del mutation. Its cost is about $317,000 per year within the Kaiser Permanente system, according to Dr. Walter. His group compared hospitalization days for CF-related diagnoses from Jan. 1 through Aug. 31, 2020, before and after initiation of triple combination therapy.

Of 47 eligible patients, 32 initiated therapy during the study period; 38% had severe lung disease, defined by forced expiratory volume in 1 second (FEV₁₎ value less than 40%. In 2020, before initiation of therapy, there were an average of 27 hospital days per month, all among patients with severe lung disease.

Among the therapy group, there were no hospitalizations after initiation of therapy through Aug. 31. Dr. Walter noted that the first hospitalization of a patient on triple combination therapy didn’t occur until early October.

At an average daily cost of $6,700, the researchers calculated that triple combination therapy saved about $189,000 per month in this group of patients. Comparing numbers to previous years, in which some patients with FEV₁ greater than 40% were hospitalized, the researchers calculated that the therapy saved about $151,000 per month among individuals with severe lung disease: Patients with severe lung disease contributed about 80% to total hospital costs.

The drug itself for the whole group cost $845,000, dwarfing the $189,000 savings overall. But among patients with severe disease, hospitalization savings were about $151,000 per month, while the drug cost in this group was $316,800 per month.

Cost savings are important, but the improvement in quality of life for a patient – avoiding hospitalization, fewer impacts on work and education – should not be overlooked, according to Ryan Perkins, MD, a pediatric and adult pulmonary fellow at Boston Children’s Hospital and Brigham and Women’s Hospital, who moderated the session. “Some of these aren’t things people typically quantify and assign a price tag to,” Dr. Perkins said in an interview.

A big limitation of the work is that it was conducted during the COVID-19 pandemic, which may have reduced hospitalizations. “We did have patients that called in, told us they were sick, that they needed to be treated for an exacerbation but didn’t want to go to the hospital,” said Dr. Walter. To help adjust for this, Dr. Walter’s team plans to compare intravenous antibiotic exposure before and after triple combination therapy, reasoning that it could help clarify the pandemic’s impact on hospitalizations.

Dr. Walter, Dr. Giusti, and Dr. Perkins have no relevant financial disclosures.

SOURCE: Walter E et al. NACFC 2020. Abstract 795.

Clinicians treating patients with cystic fibrosis (CF) have had to face the possibility that their patients may be particularly susceptible to SARS-CoV-2 infection and perhaps at greater risk of worse outcomes from COVID-19. But early results suggest that social distance measures and perhaps the younger average age of individuals with CF have prevented a severe impact on this patient population.

Not all of the news is good. Some research suggests that posttransplant individuals may be at greater risk of severe outcomes. However, researchers warned that the data are too sparse to draw firm conclusions, and ongoing analyses of patient registries and other sources should lend greater insight into the burden of COVID-19 among individuals with CF. Those were some of the conclusions presented at a session of the virtual North American Cystic Fibrosis Conference.

D.B. Sanders, MD, who is a pediatric pulmonologist at Riley Hospital for Children and the Indiana University, both in Indianapolis, presented data from the Cystic Fibrosis Foundation’s Patient Registry, which includes patients in the United States. As in other populations, he showed that health care use has gone down among individuals with CF. From April to September 2019, 81% of clinical encounters were in the clinic and 12% in the hospital. Over the same period in 2020, those numbers dropped to 35% and 4%, respectively, with 30% by phone or computer. In-person health care use rebounded somewhat between July 1 and Sept. 16, with 53% of encounters at the clinic, 5% at the hospital, and 28% conducted virtually. There were also dips in forced expiratory volume in one second (FEV₁) and microbiology testing, from about 90% occurring during health encounters at the end of 2019 to fewer than 10% of encounters by April.

As of Aug. 17, Dr. Sanders reported that 3,048 individuals with CF had been tested for COVID-19, with 174 positive results.

Racial and ethnic disparities in positive test results seen in other populations were also observable among individuals with CF. Several groups made up a higher proportion of COVID-19–positive CF patients than the general CF population, including Hispanics (18% vs. 9%), Blacks (7% vs. 5%), and individuals with FEV₁ value less than 40% predicted (14% vs. 8%).

As of Sept. 17, there had been 51 hospitalizations and two deaths in the United States among 212 individuals with CF who tested positive for COVID-19, with increasing numbers that mirror trends in the U.S. population. One death occurred in a patient with advanced lung disease, the other in a post–lung transplant patient. “Thankfully [the numbers are] not higher, but this is being followed very closely,” said Dr. Sanders during his presentation.

One encouraging bit of news was that hospitalizations among individuals with CF have dropped since the start of the pandemic. “I think this shows how good our families are at socially distancing, wearing masks, and now that they not being exposed to viruses, I think we’re seeing the fruits of this with fewer hospitalizations,” said Dr. Sanders. He noted that it’s possible some of the decline could have been to reluctance to go to the hospital, and the introduction of triple combination cystic fibrosis transmembrane conductance regulator modulator therapy has also likely contributed. “We were already seeing fewer hospitalizations even before the pandemic hit,” he said.

At the session, Rebecca Cosgriff, director of data and quality improvement at the Cystic Fibrosis Trust in the United Kingdom, presented an international perspective on COVID-19 cases among individuals with CF. At the beginning of the pandemic, the Cystic Fibrosis Global Registry Harmonization Group recruited country coordinators to collect anonymized data on infections, hospitalizations, and other outcomes. In April, the group published its initial findings from 40 cases in eight countries, which concluded that these cases generally resembled the broader population in clinical course, which assuaged initial fears.

Ms. Cosgriff reported on results from a second round of data collection with a cutoff date of June 19, which expanded to 19 countries and included many from South America and more in Europe. The network encompassed about 85,000 individuals with CF, and tallied 181 cases of COVID-19. A total of 149 cases were nontransplant, and 32 were posttransplant (28 lung only). Fully 15% of the nontransplant group were over age 40 years, compared with 41% in the transplant group. Homozygous F508del mutations were more common in the posttransplant group (59% vs. 36%). However, lung function, as estimated by the best FEV₁ measured in the previous year prior to infection, differed between the nontransplant (73%) and posttransplant (80%) COVID-19 patients.

Across all age groups, hospitalizations were more common in patients with best FEV₁ percentage predicted values less than 70% (P = .001). Ms. Cosgriff also expressed concern about the posttransplant group. “Across all outcomes that might be indicative of infection severity – hospitalization, ICU admission, new supplementary oxygen, and non-invasive ventilation – the proportion of the posttransplant group was higher across the board,” she said during her presentation.

There were seven deaths. Ms. Cosgriff noted that there were too few deaths to analyze trends, but she presented a slide showing characteristics of deceased patients. “Factors like being post–lung transplant, being male, having less FEV₁ than predicted, being over 40, or having CF-related diabetes, all appear pretty frequently amongst the cohort of people who died,” she said.

Overall, the results of these surveys are encouraging, suggesting that early fears that COVID-19 cases could be more severe among individuals with CF may not have been borne out so far. Dr. Sanders noted in his talk that there aren’t enough cases in the U.S. cohort to show links to risk factors with statistical significance. “But thankfully we’re not seeing a host of negative outcomes,” he said.

Dr. Sanders and Ms Cosgriff have no relevant financial disclosures.

Clinicians treating patients with cystic fibrosis (CF) have had to face the possibility that their patients may be particularly susceptible to SARS-CoV-2 infection and perhaps at greater risk of worse outcomes from COVID-19. But early results suggest that social distance measures and perhaps the younger average age of individuals with CF have prevented a severe impact on this patient population.

Not all of the news is good. Some research suggests that posttransplant individuals may be at greater risk of severe outcomes. However, researchers warned that the data are too sparse to draw firm conclusions, and ongoing analyses of patient registries and other sources should lend greater insight into the burden of COVID-19 among individuals with CF. Those were some of the conclusions presented at a session of the virtual North American Cystic Fibrosis Conference.

D.B. Sanders, MD, who is a pediatric pulmonologist at Riley Hospital for Children and the Indiana University, both in Indianapolis, presented data from the Cystic Fibrosis Foundation’s Patient Registry, which includes patients in the United States. As in other populations, he showed that health care use has gone down among individuals with CF. From April to September 2019, 81% of clinical encounters were in the clinic and 12% in the hospital. Over the same period in 2020, those numbers dropped to 35% and 4%, respectively, with 30% by phone or computer. In-person health care use rebounded somewhat between July 1 and Sept. 16, with 53% of encounters at the clinic, 5% at the hospital, and 28% conducted virtually. There were also dips in forced expiratory volume in one second (FEV₁) and microbiology testing, from about 90% occurring during health encounters at the end of 2019 to fewer than 10% of encounters by April.

As of Aug. 17, Dr. Sanders reported that 3,048 individuals with CF had been tested for COVID-19, with 174 positive results.

Racial and ethnic disparities in positive test results seen in other populations were also observable among individuals with CF. Several groups made up a higher proportion of COVID-19–positive CF patients than the general CF population, including Hispanics (18% vs. 9%), Blacks (7% vs. 5%), and individuals with FEV₁ value less than 40% predicted (14% vs. 8%).

As of Sept. 17, there had been 51 hospitalizations and two deaths in the United States among 212 individuals with CF who tested positive for COVID-19, with increasing numbers that mirror trends in the U.S. population. One death occurred in a patient with advanced lung disease, the other in a post–lung transplant patient. “Thankfully [the numbers are] not higher, but this is being followed very closely,” said Dr. Sanders during his presentation.

One encouraging bit of news was that hospitalizations among individuals with CF have dropped since the start of the pandemic. “I think this shows how good our families are at socially distancing, wearing masks, and now that they not being exposed to viruses, I think we’re seeing the fruits of this with fewer hospitalizations,” said Dr. Sanders. He noted that it’s possible some of the decline could have been to reluctance to go to the hospital, and the introduction of triple combination cystic fibrosis transmembrane conductance regulator modulator therapy has also likely contributed. “We were already seeing fewer hospitalizations even before the pandemic hit,” he said.

At the session, Rebecca Cosgriff, director of data and quality improvement at the Cystic Fibrosis Trust in the United Kingdom, presented an international perspective on COVID-19 cases among individuals with CF. At the beginning of the pandemic, the Cystic Fibrosis Global Registry Harmonization Group recruited country coordinators to collect anonymized data on infections, hospitalizations, and other outcomes. In April, the group published its initial findings from 40 cases in eight countries, which concluded that these cases generally resembled the broader population in clinical course, which assuaged initial fears.

Ms. Cosgriff reported on results from a second round of data collection with a cutoff date of June 19, which expanded to 19 countries and included many from South America and more in Europe. The network encompassed about 85,000 individuals with CF, and tallied 181 cases of COVID-19. A total of 149 cases were nontransplant, and 32 were posttransplant (28 lung only). Fully 15% of the nontransplant group were over age 40 years, compared with 41% in the transplant group. Homozygous F508del mutations were more common in the posttransplant group (59% vs. 36%). However, lung function, as estimated by the best FEV₁ measured in the previous year prior to infection, differed between the nontransplant (73%) and posttransplant (80%) COVID-19 patients.

Across all age groups, hospitalizations were more common in patients with best FEV₁ percentage predicted values less than 70% (P = .001). Ms. Cosgriff also expressed concern about the posttransplant group. “Across all outcomes that might be indicative of infection severity – hospitalization, ICU admission, new supplementary oxygen, and non-invasive ventilation – the proportion of the posttransplant group was higher across the board,” she said during her presentation.

There were seven deaths. Ms. Cosgriff noted that there were too few deaths to analyze trends, but she presented a slide showing characteristics of deceased patients. “Factors like being post–lung transplant, being male, having less FEV₁ than predicted, being over 40, or having CF-related diabetes, all appear pretty frequently amongst the cohort of people who died,” she said.

Overall, the results of these surveys are encouraging, suggesting that early fears that COVID-19 cases could be more severe among individuals with CF may not have been borne out so far. Dr. Sanders noted in his talk that there aren’t enough cases in the U.S. cohort to show links to risk factors with statistical significance. “But thankfully we’re not seeing a host of negative outcomes,” he said.

Dr. Sanders and Ms Cosgriff have no relevant financial disclosures.

Clinicians treating patients with cystic fibrosis (CF) have had to face the possibility that their patients may be particularly susceptible to SARS-CoV-2 infection and perhaps at greater risk of worse outcomes from COVID-19. But early results suggest that social distance measures and perhaps the younger average age of individuals with CF have prevented a severe impact on this patient population.

Not all of the news is good. Some research suggests that posttransplant individuals may be at greater risk of severe outcomes. However, researchers warned that the data are too sparse to draw firm conclusions, and ongoing analyses of patient registries and other sources should lend greater insight into the burden of COVID-19 among individuals with CF. Those were some of the conclusions presented at a session of the virtual North American Cystic Fibrosis Conference.

D.B. Sanders, MD, who is a pediatric pulmonologist at Riley Hospital for Children and the Indiana University, both in Indianapolis, presented data from the Cystic Fibrosis Foundation’s Patient Registry, which includes patients in the United States. As in other populations, he showed that health care use has gone down among individuals with CF. From April to September 2019, 81% of clinical encounters were in the clinic and 12% in the hospital. Over the same period in 2020, those numbers dropped to 35% and 4%, respectively, with 30% by phone or computer. In-person health care use rebounded somewhat between July 1 and Sept. 16, with 53% of encounters at the clinic, 5% at the hospital, and 28% conducted virtually. There were also dips in forced expiratory volume in one second (FEV₁) and microbiology testing, from about 90% occurring during health encounters at the end of 2019 to fewer than 10% of encounters by April.

As of Aug. 17, Dr. Sanders reported that 3,048 individuals with CF had been tested for COVID-19, with 174 positive results.

Racial and ethnic disparities in positive test results seen in other populations were also observable among individuals with CF. Several groups made up a higher proportion of COVID-19–positive CF patients than the general CF population, including Hispanics (18% vs. 9%), Blacks (7% vs. 5%), and individuals with FEV₁ value less than 40% predicted (14% vs. 8%).

As of Sept. 17, there had been 51 hospitalizations and two deaths in the United States among 212 individuals with CF who tested positive for COVID-19, with increasing numbers that mirror trends in the U.S. population. One death occurred in a patient with advanced lung disease, the other in a post–lung transplant patient. “Thankfully [the numbers are] not higher, but this is being followed very closely,” said Dr. Sanders during his presentation.

One encouraging bit of news was that hospitalizations among individuals with CF have dropped since the start of the pandemic. “I think this shows how good our families are at socially distancing, wearing masks, and now that they not being exposed to viruses, I think we’re seeing the fruits of this with fewer hospitalizations,” said Dr. Sanders. He noted that it’s possible some of the decline could have been to reluctance to go to the hospital, and the introduction of triple combination cystic fibrosis transmembrane conductance regulator modulator therapy has also likely contributed. “We were already seeing fewer hospitalizations even before the pandemic hit,” he said.

At the session, Rebecca Cosgriff, director of data and quality improvement at the Cystic Fibrosis Trust in the United Kingdom, presented an international perspective on COVID-19 cases among individuals with CF. At the beginning of the pandemic, the Cystic Fibrosis Global Registry Harmonization Group recruited country coordinators to collect anonymized data on infections, hospitalizations, and other outcomes. In April, the group published its initial findings from 40 cases in eight countries, which concluded that these cases generally resembled the broader population in clinical course, which assuaged initial fears.

Ms. Cosgriff reported on results from a second round of data collection with a cutoff date of June 19, which expanded to 19 countries and included many from South America and more in Europe. The network encompassed about 85,000 individuals with CF, and tallied 181 cases of COVID-19. A total of 149 cases were nontransplant, and 32 were posttransplant (28 lung only). Fully 15% of the nontransplant group were over age 40 years, compared with 41% in the transplant group. Homozygous F508del mutations were more common in the posttransplant group (59% vs. 36%). However, lung function, as estimated by the best FEV₁ measured in the previous year prior to infection, differed between the nontransplant (73%) and posttransplant (80%) COVID-19 patients.

Across all age groups, hospitalizations were more common in patients with best FEV₁ percentage predicted values less than 70% (P = .001). Ms. Cosgriff also expressed concern about the posttransplant group. “Across all outcomes that might be indicative of infection severity – hospitalization, ICU admission, new supplementary oxygen, and non-invasive ventilation – the proportion of the posttransplant group was higher across the board,” she said during her presentation.

There were seven deaths. Ms. Cosgriff noted that there were too few deaths to analyze trends, but she presented a slide showing characteristics of deceased patients. “Factors like being post–lung transplant, being male, having less FEV₁ than predicted, being over 40, or having CF-related diabetes, all appear pretty frequently amongst the cohort of people who died,” she said.

Overall, the results of these surveys are encouraging, suggesting that early fears that COVID-19 cases could be more severe among individuals with CF may not have been borne out so far. Dr. Sanders noted in his talk that there aren’t enough cases in the U.S. cohort to show links to risk factors with statistical significance. “But thankfully we’re not seeing a host of negative outcomes,” he said.

Dr. Sanders and Ms Cosgriff have no relevant financial disclosures.

Home spirometry has become increasingly used among cystic fibrosis patients during the COVID-19 pandemic, and new research suggests that home devices perform reasonably well. Forced expiratory volume in 1 second (FEV₁) values were a bit lower than values seen in clinical spirometry performed in the same patient at a nearby time point, but the procedure reliably picked up decreases in FEV₁, potentially helping patients and clinicians spot exacerbations early.

“Home spirometry was sort of a curiosity that was slowly working its way into cystic fibrosis research in 2019, and then all of a sudden in 2020 it became front and center as the only way to continue with clinical monitoring and research in many cases,” Alexander Paynter, MS, a biostatistician at the Cystic Fibrosis Foundation’s Therapeutic Development Network Coordinating Center, said during a talk at the virtual North American Cystic Fibrosis Conference.

To better determine how closely home spirometry matches clinical spirometry, Mr. Paynter and his colleagues analyzed data from the eICE study, which included 267 cystic fibrosis patients aged 14 and over at 14 cystic fibrosis centers. They were randomized to use home spirometry as an early intervention to detect exacerbations, or to continue usual clinic care with visits to the clinic every 3 months. The dataset includes twice-weekly home spirometry values, with a full-year of follow-up data. The researchers compared the home spirometry data to the clinical data closest in time to it. Clinic spirometry data with no corresponding home data within 7 days were discarded.

There was an estimated difference of –2.01 mL between home and clinic tests, with home spirometry producing lower values (95% confidence interval, –3.56 to –0.45). “There is actually a bias in home spirometry as compared to clinic spirometry,” concluded Mr. Paynter.

One explanation for lower values in home spirometry is that users are inexperienced with the device. If that’s true, then agreement should improve over time, but the researchers didn’t see strong evidence of that. Among 44 patients who completed five clinical visits, there was a difference of –2.97 (standard deviation [SD], 10.51) at baseline, –1.66 at 3 months (SD, 13.49), –3.7 at 6 months (SD, 12.44), –0.86 at 9 months (SD, 13.73), and –0.53 at 12 months (SD, 13.35). Though there was improvement over time, “we don’t find a lot of evidence that this bias completely resolves,” said Mr. Paynter.

In fact, a more likely explanation is the presence of coaching by a technician during clinical spirometry, according to Robert J. Giusti, MD, clinical professor of pediatrics and director of the Pediatric Cystic Fibrosis Center at New York University. “When they’re doing it at home, they don’t do it with the same effort, so I think that coaching through telemedicine during the home spirometry would make that difference disappear,” he said when asked to comment on the study.

SOURCE: Alex Paynter et al. NACFC 2020. Poster 643.

Home spirometry has become increasingly used among cystic fibrosis patients during the COVID-19 pandemic, and new research suggests that home devices perform reasonably well. Forced expiratory volume in 1 second (FEV₁) values were a bit lower than values seen in clinical spirometry performed in the same patient at a nearby time point, but the procedure reliably picked up decreases in FEV₁, potentially helping patients and clinicians spot exacerbations early.

“Home spirometry was sort of a curiosity that was slowly working its way into cystic fibrosis research in 2019, and then all of a sudden in 2020 it became front and center as the only way to continue with clinical monitoring and research in many cases,” Alexander Paynter, MS, a biostatistician at the Cystic Fibrosis Foundation’s Therapeutic Development Network Coordinating Center, said during a talk at the virtual North American Cystic Fibrosis Conference.

To better determine how closely home spirometry matches clinical spirometry, Mr. Paynter and his colleagues analyzed data from the eICE study, which included 267 cystic fibrosis patients aged 14 and over at 14 cystic fibrosis centers. They were randomized to use home spirometry as an early intervention to detect exacerbations, or to continue usual clinic care with visits to the clinic every 3 months. The dataset includes twice-weekly home spirometry values, with a full-year of follow-up data. The researchers compared the home spirometry data to the clinical data closest in time to it. Clinic spirometry data with no corresponding home data within 7 days were discarded.

There was an estimated difference of –2.01 mL between home and clinic tests, with home spirometry producing lower values (95% confidence interval, –3.56 to –0.45). “There is actually a bias in home spirometry as compared to clinic spirometry,” concluded Mr. Paynter.

One explanation for lower values in home spirometry is that users are inexperienced with the device. If that’s true, then agreement should improve over time, but the researchers didn’t see strong evidence of that. Among 44 patients who completed five clinical visits, there was a difference of –2.97 (standard deviation [SD], 10.51) at baseline, –1.66 at 3 months (SD, 13.49), –3.7 at 6 months (SD, 12.44), –0.86 at 9 months (SD, 13.73), and –0.53 at 12 months (SD, 13.35). Though there was improvement over time, “we don’t find a lot of evidence that this bias completely resolves,” said Mr. Paynter.

In fact, a more likely explanation is the presence of coaching by a technician during clinical spirometry, according to Robert J. Giusti, MD, clinical professor of pediatrics and director of the Pediatric Cystic Fibrosis Center at New York University. “When they’re doing it at home, they don’t do it with the same effort, so I think that coaching through telemedicine during the home spirometry would make that difference disappear,” he said when asked to comment on the study.

SOURCE: Alex Paynter et al. NACFC 2020. Poster 643.

Home spirometry has become increasingly used among cystic fibrosis patients during the COVID-19 pandemic, and new research suggests that home devices perform reasonably well. Forced expiratory volume in 1 second (FEV₁) values were a bit lower than values seen in clinical spirometry performed in the same patient at a nearby time point, but the procedure reliably picked up decreases in FEV₁, potentially helping patients and clinicians spot exacerbations early.

“Home spirometry was sort of a curiosity that was slowly working its way into cystic fibrosis research in 2019, and then all of a sudden in 2020 it became front and center as the only way to continue with clinical monitoring and research in many cases,” Alexander Paynter, MS, a biostatistician at the Cystic Fibrosis Foundation’s Therapeutic Development Network Coordinating Center, said during a talk at the virtual North American Cystic Fibrosis Conference.

To better determine how closely home spirometry matches clinical spirometry, Mr. Paynter and his colleagues analyzed data from the eICE study, which included 267 cystic fibrosis patients aged 14 and over at 14 cystic fibrosis centers. They were randomized to use home spirometry as an early intervention to detect exacerbations, or to continue usual clinic care with visits to the clinic every 3 months. The dataset includes twice-weekly home spirometry values, with a full-year of follow-up data. The researchers compared the home spirometry data to the clinical data closest in time to it. Clinic spirometry data with no corresponding home data within 7 days were discarded.

There was an estimated difference of –2.01 mL between home and clinic tests, with home spirometry producing lower values (95% confidence interval, –3.56 to –0.45). “There is actually a bias in home spirometry as compared to clinic spirometry,” concluded Mr. Paynter.

One explanation for lower values in home spirometry is that users are inexperienced with the device. If that’s true, then agreement should improve over time, but the researchers didn’t see strong evidence of that. Among 44 patients who completed five clinical visits, there was a difference of –2.97 (standard deviation [SD], 10.51) at baseline, –1.66 at 3 months (SD, 13.49), –3.7 at 6 months (SD, 12.44), –0.86 at 9 months (SD, 13.73), and –0.53 at 12 months (SD, 13.35). Though there was improvement over time, “we don’t find a lot of evidence that this bias completely resolves,” said Mr. Paynter.

In fact, a more likely explanation is the presence of coaching by a technician during clinical spirometry, according to Robert J. Giusti, MD, clinical professor of pediatrics and director of the Pediatric Cystic Fibrosis Center at New York University. “When they’re doing it at home, they don’t do it with the same effort, so I think that coaching through telemedicine during the home spirometry would make that difference disappear,” he said when asked to comment on the study.

SOURCE: Alex Paynter et al. NACFC 2020. Poster 643.

As COVID-19 cases surge in the United States, one Texas veterinarian has been quietly tracking the spread of the disease – not in people, but in their pets.

Since June, Dr. Sarah Hamer and her team at Texas A&M University have tested hundreds of animals from area households where humans contracted COVID-19. They’ve swabbed dogs and cats, sure, but also pet hamsters and guinea pigs, looking for signs of infection. “We’re open to all of it,” said Dr. Hamer, a professor of epidemiology, who has found at least 19 cases of infection.

One pet that tested positive was Phoenix, a 7-year-old part Siamese cat owned by Kaitlyn Romoser, who works in a university lab. Ms. Romoser, 23, was confirmed to have COVID-19 twice, once in March and again in September. The second time she was much sicker, she said, and Phoenix was her constant companion.

“If I would have known animals were just getting it everywhere, I would have tried to distance myself, but he will not distance himself from me,” Ms. Romoser said. “He sleeps in my bed with me. There was absolutely no social distancing.”

Across the country, veterinarians and other researchers are scouring the animal kingdom for signs of the virus that causes COVID-19. At least 2,000 animals in the U.S. have been tested for the coronavirus since the pandemic began, according to federal records. Cats and dogs that were exposed to sick owners represent most of the animals tested and 80% of the positive cases found.

But scientists have cast a wide net investigating other animals that could be at risk. In states from California to Florida, researchers have tested species ranging from farmed minks and zoo cats to unexpected critters like dolphins, armadillos, and anteaters.

The U.S. Department of Agriculture keeps an official tally of confirmed animal COVID cases that stands at several dozen. But that list is a vast undercount of actual infections. In Utah and Wisconsin, for instance, more than 14,000 minks died in recent weeks after contracting COVID infections initially spread by humans.

So far, there’s limited evidence that animals are transmitting the virus to people. Veterinarians emphasize that pet owners appear to be in no danger from their animal companions and should continue to love and care for them. But scientists say continued testing is one way to remain vigilant in the face of a previously unknown pathogen.

“We just know that coronaviruses, as a family, infect a lot of species, mostly mammals,” said Dr. Peter Rabinowitz, a professor of environmental and occupational health sciences and the director of the University of Washington Center for One Health Research in Seattle. “It makes sense to take a species-spanning approach and look at a wide spectrum.”

Much of the testing has been rooted in scientific curiosity. Since the pandemic began, a major puzzle has been how the virus, which likely originated in bats, spread to humans. A leading theory is that it jumped to an intermediate species, still unknown, and then to people.

In April, a 4-year-old Malayan tiger at the Bronx Zoo tested positive for COVID-19 in a first-of-its-kind case after seven big cats showed signs of respiratory illness. The tiger, Nadia, contracted the virus from a caretaker, federal health officials said. Four other tigers and three African lions were also confirmed to be infected.

In Washington state, the site of the first U.S. outbreak in humans, scientists rushed to design a COVID test for animals in March, said Charlie Powell, a spokesperson for the Washington State University College of Veterinary Medicine, Pullman. “We knew with warm-blooded animals, housed together, there’s going to be some cross-infection,” he said. Tests for animals use different reagent compounds than those used for tests in people, so they don’t deplete the human supply, Mr. Powell added.

Since spring, the Washington Animal Disease Diagnostic Laboratory has tested nearly 80 animals, including 38 dogs, 29 cats, 2 ferrets, a camel, and 2 tamanduas, a type of anteater. The lab also tested six minks from the outbreak in Utah, five of which accounted for the lab’s only positive tests.

All told, nearly 1,400 animals have been tested for COVID-19 through the National Animal Health Laboratory Network or private labs, said Lyndsay Cole, a spokesperson for the USDA’s Animal and Plant Health Inspection Service. More than 400 animals have been tested through the National Veterinary Services Laboratories. At least 250 more have been tested through academic research projects.

Most of the tests have been in household cats and dogs with suspicious respiratory symptoms. In June, the USDA reported that a dog in New York was the first pet dog to test positive for the coronavirus after falling ill and struggling to breathe. The dog, a 7-year-old German shepherd named Buddy, later died. Officials determined he’d contracted the virus from his owner.

Neither the Centers for Disease Control and Prevention nor the USDA recommends routine testing for house pets or other animals – but that hasn’t stopped owners from asking, said Dr. Douglas Kratt, president of the American Veterinary Medical Association.

“The questions have become a little more consistent at my practice,” he said. “People do want to know about COVID-19 and their pets. Can their pet pick it up at a clinic or boarding or in doggie day care?”

The answer, so far, is that humans are the primary source of infection in pets. In September, a small, unpublished study from the University of Guelph in Canada found that companion cats and dogs appeared to be infected by their sick owners, judging by antibodies to the coronavirus detected in their blood.

In Texas, Dr. Hamer started testing animals from households where someone had contracted COVID-19 to learn more about transmission pathways. “Right now, we’re very much trying to describe what’s happening in nature,” she said.

So far, most of the animals – including Phoenix, Ms. Romoser’s cat – have shown no signs of illness or disease. That’s true so far for many species of animals tested for COVID-19, veterinarians said. Most nonhuman creatures appear to weather COVID infection with mild symptoms like sniffles and lethargy, if any.

Still, owners should apply best practices for avoiding COVID infection to pets, too, Dr. Kratt said. Don’t let pets come into contact with unfamiliar animals, he suggested. Owners should wash their hands frequently and avoid nuzzling and other very close contact, if possible.

Cats appear to be more susceptible to COVID-19 than dogs, researchers said. And minks, which are farmed in the U.S. and elsewhere for their fur, appear quite vulnerable.

In the meantime, the list of creatures tested for COVID-19 – whether for illness or science – is growing. In Florida, 22 animals had been tested as of early October, including 3 wild dolphins, 2 civets, 2 clouded leopards, a gorilla, an orangutan, an alpaca, and a bush baby, state officials said.

In California, 29 animals had been tested by the end of September, including a meerkat, a monkey, and a coatimundi, a member of the raccoon family.

In Seattle, a plan to test orcas, or killer whales, in Puget Sound was called off at the last minute after a member of the scientific team was exposed to COVID-19 and had to quarantine, said Dr. Joe Gaydos, a senior wildlife veterinarian and science director for the SeaDoc Society, a conservation program at the University of California-Davis. The group missed its September window to locate the animals and obtain breath and fecal samples for analysis.

No one thinks marine animals will play a big role in the pandemic decimating the human population, Dr. Gaydos said. But testing many creatures on both land and sea is vital.

“We don’t know what this virus is going to do or can do,” Dr. Gaydos said.

Kaiser Health News is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

As COVID-19 cases surge in the United States, one Texas veterinarian has been quietly tracking the spread of the disease – not in people, but in their pets.

Since June, Dr. Sarah Hamer and her team at Texas A&M University have tested hundreds of animals from area households where humans contracted COVID-19. They’ve swabbed dogs and cats, sure, but also pet hamsters and guinea pigs, looking for signs of infection. “We’re open to all of it,” said Dr. Hamer, a professor of epidemiology, who has found at least 19 cases of infection.

One pet that tested positive was Phoenix, a 7-year-old part Siamese cat owned by Kaitlyn Romoser, who works in a university lab. Ms. Romoser, 23, was confirmed to have COVID-19 twice, once in March and again in September. The second time she was much sicker, she said, and Phoenix was her constant companion.

“If I would have known animals were just getting it everywhere, I would have tried to distance myself, but he will not distance himself from me,” Ms. Romoser said. “He sleeps in my bed with me. There was absolutely no social distancing.”

Across the country, veterinarians and other researchers are scouring the animal kingdom for signs of the virus that causes COVID-19. At least 2,000 animals in the U.S. have been tested for the coronavirus since the pandemic began, according to federal records. Cats and dogs that were exposed to sick owners represent most of the animals tested and 80% of the positive cases found.

But scientists have cast a wide net investigating other animals that could be at risk. In states from California to Florida, researchers have tested species ranging from farmed minks and zoo cats to unexpected critters like dolphins, armadillos, and anteaters.

The U.S. Department of Agriculture keeps an official tally of confirmed animal COVID cases that stands at several dozen. But that list is a vast undercount of actual infections. In Utah and Wisconsin, for instance, more than 14,000 minks died in recent weeks after contracting COVID infections initially spread by humans.

So far, there’s limited evidence that animals are transmitting the virus to people. Veterinarians emphasize that pet owners appear to be in no danger from their animal companions and should continue to love and care for them. But scientists say continued testing is one way to remain vigilant in the face of a previously unknown pathogen.

“We just know that coronaviruses, as a family, infect a lot of species, mostly mammals,” said Dr. Peter Rabinowitz, a professor of environmental and occupational health sciences and the director of the University of Washington Center for One Health Research in Seattle. “It makes sense to take a species-spanning approach and look at a wide spectrum.”

Much of the testing has been rooted in scientific curiosity. Since the pandemic began, a major puzzle has been how the virus, which likely originated in bats, spread to humans. A leading theory is that it jumped to an intermediate species, still unknown, and then to people.

In April, a 4-year-old Malayan tiger at the Bronx Zoo tested positive for COVID-19 in a first-of-its-kind case after seven big cats showed signs of respiratory illness. The tiger, Nadia, contracted the virus from a caretaker, federal health officials said. Four other tigers and three African lions were also confirmed to be infected.

In Washington state, the site of the first U.S. outbreak in humans, scientists rushed to design a COVID test for animals in March, said Charlie Powell, a spokesperson for the Washington State University College of Veterinary Medicine, Pullman. “We knew with warm-blooded animals, housed together, there’s going to be some cross-infection,” he said. Tests for animals use different reagent compounds than those used for tests in people, so they don’t deplete the human supply, Mr. Powell added.

Since spring, the Washington Animal Disease Diagnostic Laboratory has tested nearly 80 animals, including 38 dogs, 29 cats, 2 ferrets, a camel, and 2 tamanduas, a type of anteater. The lab also tested six minks from the outbreak in Utah, five of which accounted for the lab’s only positive tests.

All told, nearly 1,400 animals have been tested for COVID-19 through the National Animal Health Laboratory Network or private labs, said Lyndsay Cole, a spokesperson for the USDA’s Animal and Plant Health Inspection Service. More than 400 animals have been tested through the National Veterinary Services Laboratories. At least 250 more have been tested through academic research projects.

Most of the tests have been in household cats and dogs with suspicious respiratory symptoms. In June, the USDA reported that a dog in New York was the first pet dog to test positive for the coronavirus after falling ill and struggling to breathe. The dog, a 7-year-old German shepherd named Buddy, later died. Officials determined he’d contracted the virus from his owner.

Neither the Centers for Disease Control and Prevention nor the USDA recommends routine testing for house pets or other animals – but that hasn’t stopped owners from asking, said Dr. Douglas Kratt, president of the American Veterinary Medical Association.

“The questions have become a little more consistent at my practice,” he said. “People do want to know about COVID-19 and their pets. Can their pet pick it up at a clinic or boarding or in doggie day care?”

The answer, so far, is that humans are the primary source of infection in pets. In September, a small, unpublished study from the University of Guelph in Canada found that companion cats and dogs appeared to be infected by their sick owners, judging by antibodies to the coronavirus detected in their blood.

In Texas, Dr. Hamer started testing animals from households where someone had contracted COVID-19 to learn more about transmission pathways. “Right now, we’re very much trying to describe what’s happening in nature,” she said.

So far, most of the animals – including Phoenix, Ms. Romoser’s cat – have shown no signs of illness or disease. That’s true so far for many species of animals tested for COVID-19, veterinarians said. Most nonhuman creatures appear to weather COVID infection with mild symptoms like sniffles and lethargy, if any.

Still, owners should apply best practices for avoiding COVID infection to pets, too, Dr. Kratt said. Don’t let pets come into contact with unfamiliar animals, he suggested. Owners should wash their hands frequently and avoid nuzzling and other very close contact, if possible.

Cats appear to be more susceptible to COVID-19 than dogs, researchers said. And minks, which are farmed in the U.S. and elsewhere for their fur, appear quite vulnerable.

In the meantime, the list of creatures tested for COVID-19 – whether for illness or science – is growing. In Florida, 22 animals had been tested as of early October, including 3 wild dolphins, 2 civets, 2 clouded leopards, a gorilla, an orangutan, an alpaca, and a bush baby, state officials said.

In California, 29 animals had been tested by the end of September, including a meerkat, a monkey, and a coatimundi, a member of the raccoon family.

In Seattle, a plan to test orcas, or killer whales, in Puget Sound was called off at the last minute after a member of the scientific team was exposed to COVID-19 and had to quarantine, said Dr. Joe Gaydos, a senior wildlife veterinarian and science director for the SeaDoc Society, a conservation program at the University of California-Davis. The group missed its September window to locate the animals and obtain breath and fecal samples for analysis.

No one thinks marine animals will play a big role in the pandemic decimating the human population, Dr. Gaydos said. But testing many creatures on both land and sea is vital.

“We don’t know what this virus is going to do or can do,” Dr. Gaydos said.

Kaiser Health News is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

As COVID-19 cases surge in the United States, one Texas veterinarian has been quietly tracking the spread of the disease – not in people, but in their pets.

Since June, Dr. Sarah Hamer and her team at Texas A&M University have tested hundreds of animals from area households where humans contracted COVID-19. They’ve swabbed dogs and cats, sure, but also pet hamsters and guinea pigs, looking for signs of infection. “We’re open to all of it,” said Dr. Hamer, a professor of epidemiology, who has found at least 19 cases of infection.

One pet that tested positive was Phoenix, a 7-year-old part Siamese cat owned by Kaitlyn Romoser, who works in a university lab. Ms. Romoser, 23, was confirmed to have COVID-19 twice, once in March and again in September. The second time she was much sicker, she said, and Phoenix was her constant companion.

“If I would have known animals were just getting it everywhere, I would have tried to distance myself, but he will not distance himself from me,” Ms. Romoser said. “He sleeps in my bed with me. There was absolutely no social distancing.”

Across the country, veterinarians and other researchers are scouring the animal kingdom for signs of the virus that causes COVID-19. At least 2,000 animals in the U.S. have been tested for the coronavirus since the pandemic began, according to federal records. Cats and dogs that were exposed to sick owners represent most of the animals tested and 80% of the positive cases found.

But scientists have cast a wide net investigating other animals that could be at risk. In states from California to Florida, researchers have tested species ranging from farmed minks and zoo cats to unexpected critters like dolphins, armadillos, and anteaters.

The U.S. Department of Agriculture keeps an official tally of confirmed animal COVID cases that stands at several dozen. But that list is a vast undercount of actual infections. In Utah and Wisconsin, for instance, more than 14,000 minks died in recent weeks after contracting COVID infections initially spread by humans.

So far, there’s limited evidence that animals are transmitting the virus to people. Veterinarians emphasize that pet owners appear to be in no danger from their animal companions and should continue to love and care for them. But scientists say continued testing is one way to remain vigilant in the face of a previously unknown pathogen.

“We just know that coronaviruses, as a family, infect a lot of species, mostly mammals,” said Dr. Peter Rabinowitz, a professor of environmental and occupational health sciences and the director of the University of Washington Center for One Health Research in Seattle. “It makes sense to take a species-spanning approach and look at a wide spectrum.”

Much of the testing has been rooted in scientific curiosity. Since the pandemic began, a major puzzle has been how the virus, which likely originated in bats, spread to humans. A leading theory is that it jumped to an intermediate species, still unknown, and then to people.

In April, a 4-year-old Malayan tiger at the Bronx Zoo tested positive for COVID-19 in a first-of-its-kind case after seven big cats showed signs of respiratory illness. The tiger, Nadia, contracted the virus from a caretaker, federal health officials said. Four other tigers and three African lions were also confirmed to be infected.

In Washington state, the site of the first U.S. outbreak in humans, scientists rushed to design a COVID test for animals in March, said Charlie Powell, a spokesperson for the Washington State University College of Veterinary Medicine, Pullman. “We knew with warm-blooded animals, housed together, there’s going to be some cross-infection,” he said. Tests for animals use different reagent compounds than those used for tests in people, so they don’t deplete the human supply, Mr. Powell added.

Since spring, the Washington Animal Disease Diagnostic Laboratory has tested nearly 80 animals, including 38 dogs, 29 cats, 2 ferrets, a camel, and 2 tamanduas, a type of anteater. The lab also tested six minks from the outbreak in Utah, five of which accounted for the lab’s only positive tests.

All told, nearly 1,400 animals have been tested for COVID-19 through the National Animal Health Laboratory Network or private labs, said Lyndsay Cole, a spokesperson for the USDA’s Animal and Plant Health Inspection Service. More than 400 animals have been tested through the National Veterinary Services Laboratories. At least 250 more have been tested through academic research projects.

Most of the tests have been in household cats and dogs with suspicious respiratory symptoms. In June, the USDA reported that a dog in New York was the first pet dog to test positive for the coronavirus after falling ill and struggling to breathe. The dog, a 7-year-old German shepherd named Buddy, later died. Officials determined he’d contracted the virus from his owner.

Neither the Centers for Disease Control and Prevention nor the USDA recommends routine testing for house pets or other animals – but that hasn’t stopped owners from asking, said Dr. Douglas Kratt, president of the American Veterinary Medical Association.

“The questions have become a little more consistent at my practice,” he said. “People do want to know about COVID-19 and their pets. Can their pet pick it up at a clinic or boarding or in doggie day care?”

The answer, so far, is that humans are the primary source of infection in pets. In September, a small, unpublished study from the University of Guelph in Canada found that companion cats and dogs appeared to be infected by their sick owners, judging by antibodies to the coronavirus detected in their blood.

In Texas, Dr. Hamer started testing animals from households where someone had contracted COVID-19 to learn more about transmission pathways. “Right now, we’re very much trying to describe what’s happening in nature,” she said.

So far, most of the animals – including Phoenix, Ms. Romoser’s cat – have shown no signs of illness or disease. That’s true so far for many species of animals tested for COVID-19, veterinarians said. Most nonhuman creatures appear to weather COVID infection with mild symptoms like sniffles and lethargy, if any.

Still, owners should apply best practices for avoiding COVID infection to pets, too, Dr. Kratt said. Don’t let pets come into contact with unfamiliar animals, he suggested. Owners should wash their hands frequently and avoid nuzzling and other very close contact, if possible.

Cats appear to be more susceptible to COVID-19 than dogs, researchers said. And minks, which are farmed in the U.S. and elsewhere for their fur, appear quite vulnerable.

In the meantime, the list of creatures tested for COVID-19 – whether for illness or science – is growing. In Florida, 22 animals had been tested as of early October, including 3 wild dolphins, 2 civets, 2 clouded leopards, a gorilla, an orangutan, an alpaca, and a bush baby, state officials said.

In California, 29 animals had been tested by the end of September, including a meerkat, a monkey, and a coatimundi, a member of the raccoon family.

In Seattle, a plan to test orcas, or killer whales, in Puget Sound was called off at the last minute after a member of the scientific team was exposed to COVID-19 and had to quarantine, said Dr. Joe Gaydos, a senior wildlife veterinarian and science director for the SeaDoc Society, a conservation program at the University of California-Davis. The group missed its September window to locate the animals and obtain breath and fecal samples for analysis.

No one thinks marine animals will play a big role in the pandemic decimating the human population, Dr. Gaydos said. But testing many creatures on both land and sea is vital.

“We don’t know what this virus is going to do or can do,” Dr. Gaydos said.

Kaiser Health News is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

Most SARS-CoV-2 virus strains feature a specific mutation that makes them more transmissible, to the point that these strains now predominate globally, new evidence shows.

In contrast to a greater variety of strains early in the pandemic, now 99.9% of circulating SARS-CoV-2 strains in the study feature the D614G mutation on the spike protein. In addition, people infected with a D614G strain have higher nasopharynx viral loads at diagnosis.

It’s not all bad news. This single-point mutation was not associated with worse clinical COVID-19 severity. Also, the mutation isn’t expected to interfere with the efficacy any of the antibody cocktails, small molecule therapies or vaccines in development.

Furthermore, “as bad as SARS-CoV-2 is, we may have dodged a bullet in terms of how quickly it mutates,” study author Ilya Finkelstein, PhD, said in an interview. This virus mutates much slower than HIV, for example, giving researchers a greater chance to stay one step ahead, he said.

The study was published online Oct. 30 in the journal mBio.
 

Molecular sleuthing

The research was possible because colleagues at the Houston Methodist Hospital system sequenced the genome of 5085 SARS-CoV-2 strains early in the outbreak and during a second wave of infection over the summer, Dr. Finkelstein said.

The unique data source also includes information from plasma, convalescent plasma, and patient outcomes. Studying a large and diverse population in a major metropolitan area like Houston helps create a “molecular fingerprint” for the virus that will continue to be very useful, said Dr. Finkelstein, a researcher and director of the Finkelstein Lab at the University of Texas, Austin.

D614G was the most common genetic substitution the researchers found, appearing in 82% of SARS-CoV-2 strains during the first wave from March 5 to May 11. The proportion with this mutation jumped to 99.9% by the second wave, defined as occurring between May 12 and July 7 in the study.

The jump in mutation frequency “occurred very rapidly, in a matter of just a few months,” the researchers noted.

The presence of the mutation during the first wave was independently associated with mechanical ventilation days, overall length of stay, and ICU length of stay. However, it was not associated with any significant differences in patient outcomes.

The D614G mutation is now so common worldwide that these viruses are considered reference strains. Researchers believe D614G predominates because it increases the spike protein’s ability to open cells for the virus to enter.

Despite the large number of virus strains evaluated, the samples only represent about 10% of COVID-19 cases in Houston during the study, a potential limitation. Also, some collected samples could not be used for high-quality genome analysis because of limited virus nucleic acid.

Also, it remains unclear if host-virus immune interactions play a significant role. However, the researchers noted in the paper that “available data suggest that, in the aggregate, host genetics does not play an overwhelming role in determining outcome in the great majority of adult patients, once virus infection is established.”
 

Surveillance ongoing

“The findings will help us to understand the origin, composition, and trajectory of future infection waves and the potential effect of the host immune response and therapeutic maneuvers on SARS-CoV-2 evolution,” the researchers added.

Going forward, the ongoing molecular surveillance of SARS-CoV-2 “may provide critical insights into the origin of the new infection spikes and waves that are occurring as public health constraints are further relaxed, schools and colleges reopen, holidays occur, commercial air travel increases and individuals change their behavior because of COVID-19 ‘fatigue,’ ” the researchers noted.

They added that the genome data will also be useful in assessing ongoing molecular evolution in spike and other proteins “as baseline herd immunity is generated, either by natural exposure to SARS-CoV-2 or by vaccination.”
 

Further validation warranted

“The study is very interesting and well performed,” Noam Shomron, PhD, a member of the faculty of medicine at Tel Aviv University, said in an interview.

Analyzing the “SARS-CoV-2 molecular evolution in a specific region in the USA … could be viewed as a microcosm of what occurs in other large cities in the USA,” he said.

However, “before jumping to conclusions, this should be further validated,” added Dr. Shomron, who authored a study suggesting differences in genetic alleles could partially explain variations across countries in the infection rates, severity, and mortality associated with SARS-CoV-2.

“We know that many other features and contributors might affect the results – even social constraints could generate a bias in the observations,” he said. 

Dr. Finkelstein and Dr. Shomron disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Most SARS-CoV-2 virus strains feature a specific mutation that makes them more transmissible, to the point that these strains now predominate globally, new evidence shows.

In contrast to a greater variety of strains early in the pandemic, now 99.9% of circulating SARS-CoV-2 strains in the study feature the D614G mutation on the spike protein. In addition, people infected with a D614G strain have higher nasopharynx viral loads at diagnosis.

It’s not all bad news. This single-point mutation was not associated with worse clinical COVID-19 severity. Also, the mutation isn’t expected to interfere with the efficacy any of the antibody cocktails, small molecule therapies or vaccines in development.

Furthermore, “as bad as SARS-CoV-2 is, we may have dodged a bullet in terms of how quickly it mutates,” study author Ilya Finkelstein, PhD, said in an interview. This virus mutates much slower than HIV, for example, giving researchers a greater chance to stay one step ahead, he said.

The study was published online Oct. 30 in the journal mBio.
 

Molecular sleuthing

The research was possible because colleagues at the Houston Methodist Hospital system sequenced the genome of 5085 SARS-CoV-2 strains early in the outbreak and during a second wave of infection over the summer, Dr. Finkelstein said.

The unique data source also includes information from plasma, convalescent plasma, and patient outcomes. Studying a large and diverse population in a major metropolitan area like Houston helps create a “molecular fingerprint” for the virus that will continue to be very useful, said Dr. Finkelstein, a researcher and director of the Finkelstein Lab at the University of Texas, Austin.

D614G was the most common genetic substitution the researchers found, appearing in 82% of SARS-CoV-2 strains during the first wave from March 5 to May 11. The proportion with this mutation jumped to 99.9% by the second wave, defined as occurring between May 12 and July 7 in the study.

The jump in mutation frequency “occurred very rapidly, in a matter of just a few months,” the researchers noted.

The presence of the mutation during the first wave was independently associated with mechanical ventilation days, overall length of stay, and ICU length of stay. However, it was not associated with any significant differences in patient outcomes.

The D614G mutation is now so common worldwide that these viruses are considered reference strains. Researchers believe D614G predominates because it increases the spike protein’s ability to open cells for the virus to enter.

Despite the large number of virus strains evaluated, the samples only represent about 10% of COVID-19 cases in Houston during the study, a potential limitation. Also, some collected samples could not be used for high-quality genome analysis because of limited virus nucleic acid.

Also, it remains unclear if host-virus immune interactions play a significant role. However, the researchers noted in the paper that “available data suggest that, in the aggregate, host genetics does not play an overwhelming role in determining outcome in the great majority of adult patients, once virus infection is established.”
 

Surveillance ongoing

“The findings will help us to understand the origin, composition, and trajectory of future infection waves and the potential effect of the host immune response and therapeutic maneuvers on SARS-CoV-2 evolution,” the researchers added.

Going forward, the ongoing molecular surveillance of SARS-CoV-2 “may provide critical insights into the origin of the new infection spikes and waves that are occurring as public health constraints are further relaxed, schools and colleges reopen, holidays occur, commercial air travel increases and individuals change their behavior because of COVID-19 ‘fatigue,’ ” the researchers noted.

They added that the genome data will also be useful in assessing ongoing molecular evolution in spike and other proteins “as baseline herd immunity is generated, either by natural exposure to SARS-CoV-2 or by vaccination.”
 

Further validation warranted

“The study is very interesting and well performed,” Noam Shomron, PhD, a member of the faculty of medicine at Tel Aviv University, said in an interview.

Analyzing the “SARS-CoV-2 molecular evolution in a specific region in the USA … could be viewed as a microcosm of what occurs in other large cities in the USA,” he said.

However, “before jumping to conclusions, this should be further validated,” added Dr. Shomron, who authored a study suggesting differences in genetic alleles could partially explain variations across countries in the infection rates, severity, and mortality associated with SARS-CoV-2.

“We know that many other features and contributors might affect the results – even social constraints could generate a bias in the observations,” he said. 

Dr. Finkelstein and Dr. Shomron disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Most SARS-CoV-2 virus strains feature a specific mutation that makes them more transmissible, to the point that these strains now predominate globally, new evidence shows.

In contrast to a greater variety of strains early in the pandemic, now 99.9% of circulating SARS-CoV-2 strains in the study feature the D614G mutation on the spike protein. In addition, people infected with a D614G strain have higher nasopharynx viral loads at diagnosis.

It’s not all bad news. This single-point mutation was not associated with worse clinical COVID-19 severity. Also, the mutation isn’t expected to interfere with the efficacy any of the antibody cocktails, small molecule therapies or vaccines in development.

Furthermore, “as bad as SARS-CoV-2 is, we may have dodged a bullet in terms of how quickly it mutates,” study author Ilya Finkelstein, PhD, said in an interview. This virus mutates much slower than HIV, for example, giving researchers a greater chance to stay one step ahead, he said.

The study was published online Oct. 30 in the journal mBio.
 

Molecular sleuthing

The research was possible because colleagues at the Houston Methodist Hospital system sequenced the genome of 5085 SARS-CoV-2 strains early in the outbreak and during a second wave of infection over the summer, Dr. Finkelstein said.

The unique data source also includes information from plasma, convalescent plasma, and patient outcomes. Studying a large and diverse population in a major metropolitan area like Houston helps create a “molecular fingerprint” for the virus that will continue to be very useful, said Dr. Finkelstein, a researcher and director of the Finkelstein Lab at the University of Texas, Austin.

D614G was the most common genetic substitution the researchers found, appearing in 82% of SARS-CoV-2 strains during the first wave from March 5 to May 11. The proportion with this mutation jumped to 99.9% by the second wave, defined as occurring between May 12 and July 7 in the study.

The jump in mutation frequency “occurred very rapidly, in a matter of just a few months,” the researchers noted.

The presence of the mutation during the first wave was independently associated with mechanical ventilation days, overall length of stay, and ICU length of stay. However, it was not associated with any significant differences in patient outcomes.

The D614G mutation is now so common worldwide that these viruses are considered reference strains. Researchers believe D614G predominates because it increases the spike protein’s ability to open cells for the virus to enter.

Despite the large number of virus strains evaluated, the samples only represent about 10% of COVID-19 cases in Houston during the study, a potential limitation. Also, some collected samples could not be used for high-quality genome analysis because of limited virus nucleic acid.

Also, it remains unclear if host-virus immune interactions play a significant role. However, the researchers noted in the paper that “available data suggest that, in the aggregate, host genetics does not play an overwhelming role in determining outcome in the great majority of adult patients, once virus infection is established.”
 

Surveillance ongoing

“The findings will help us to understand the origin, composition, and trajectory of future infection waves and the potential effect of the host immune response and therapeutic maneuvers on SARS-CoV-2 evolution,” the researchers added.

Going forward, the ongoing molecular surveillance of SARS-CoV-2 “may provide critical insights into the origin of the new infection spikes and waves that are occurring as public health constraints are further relaxed, schools and colleges reopen, holidays occur, commercial air travel increases and individuals change their behavior because of COVID-19 ‘fatigue,’ ” the researchers noted.

They added that the genome data will also be useful in assessing ongoing molecular evolution in spike and other proteins “as baseline herd immunity is generated, either by natural exposure to SARS-CoV-2 or by vaccination.”
 

Further validation warranted

“The study is very interesting and well performed,” Noam Shomron, PhD, a member of the faculty of medicine at Tel Aviv University, said in an interview.

Analyzing the “SARS-CoV-2 molecular evolution in a specific region in the USA … could be viewed as a microcosm of what occurs in other large cities in the USA,” he said.

However, “before jumping to conclusions, this should be further validated,” added Dr. Shomron, who authored a study suggesting differences in genetic alleles could partially explain variations across countries in the infection rates, severity, and mortality associated with SARS-CoV-2.

“We know that many other features and contributors might affect the results – even social constraints could generate a bias in the observations,” he said. 

Dr. Finkelstein and Dr. Shomron disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

In a large international study of patients admitted to the ICU with COVID-19, the likelihood of having severe pneumonia (i.e., needing invasive mechanical ventilation) increased stepwise with increasing body mass index (BMI) – independent of diabetes, hypertension, dyslipidemia, or current smoking.

The main finding was a linear correlation between BMI and need for invasive mechanical ventilation, after adjustment for center, age, sex, and other prespecified metabolic risk factors.

Risk was “highest for older people and males, but the next most important risk factor to developing severe pneumonia if infected [was] obesity,” said François Pattou, MD, Centre Hospitalier Universitaire de Lille (France), who presented the findings at the ObesityWeek 2020 virtual meeting. The results were also recently published in a preprint article in The Lancet.

Dr. Pattou and colleagues first reported back in April that obesity is one of the biggest risk factors for severe COVID-19 infection, especially in younger patients. Many further reports linked the two, and the French researchers then set out to conduct the current large, international, multicenter cohort study.

“The high number of patients included here [allowed us] to disentangle the role of various metabolic cofactors and to show that obesity, not diabetes or hypertension, was the main determinant of severe pneumonia [after age and gender],” Dr. Pattou said in an interview.

And the impact of obesity was most pronounced in women younger than 50 years.
 

Patients with severe obesity must protect themselves

Of interest, the study also found an “obesity paradox” for mortality after admission to the ICU.

Specifically, compared with leaner patients (BMI < 25 kg/m²), those with severe obesity (obesity class III, BMI ≥ 40) had an increased risk of dying within 28 days of admission to ICU. But patients with overweight to moderate obesity (BMI 25-39.9) had a lower risk of this outcome.

“The second original finding of our study,” Dr. Pattou continued, was the “nonlinear relation observed between BMI and all-cause mortality rate in ICU patients.”

Matteo Rottoli, MD, PhD, author of a related study reported by in July, said the new trial “confirms the findings of our study, which are that obesity is an independent risk factor for intensive care admission and death.”

Dr. Rottoli, from Alma Mater Studiorum, University of Bologna, Italy, and colleagues found that in their population of patients with COVID-19, a BMI > 35 was associated with a greater risk of death.

The takeaway message from the research is that “obesity should be considered one of the most important parameters to identify the population at risk” of getting COVID-19 who need to take extra precautions such as social distancing, Dr. Rottoli stressed.

Dr. Pattou agrees, particularly when it comes to severe obesity.

Intensive care physicians have learned a lot in the past months about COVID-19 pneumonia and how to address it (such as not precipitating intubation, using corticosteroids), he explained.

“Importantly, the general population has also learned a lot, and we can hope that patients with obesity, especially those with severe obesity, will take extra measures to protect themselves, resulting in a decrease of the incidence of severe pneumonia in young and severely obese patients,” he added.
 

Untangling BMI from other metabolic risk factors

Dr. Pattou said that, from Dec. 16, 2019, to Nov. 1, 2020, more than 45 million people worldwide tested positive for COVID-19 and more than 1.2 million people died from it.

Multiple studies have reported that, among people with COVID-19, those with obesity are at higher risk of hospitalization, ICU admission, invasive ventilation, and death, but it had not been clear if BMI was an independent risk factor.

Dr. Pattou and colleagues aimed to examine the relationship between BMI and COVID-19 pneumonia severity, defined by the need for mechanical ventilation (primary outcome), as well as 28-day all-cause mortality (secondary outcome) among patients admitted to the ICU.

They also sought to disentangle the effect of BMI from other metabolic risk factors (diabetes, hypertension, dyslipidemia, and current smoking) and examine the influence of age and sex on outcomes.

They performed a retrospective analysis of 1,461 patients with confirmed COVID-19 (positive reverse polymerase chain reaction test using a nasal or pharyngeal swab specimen) who were admitted to the ICU at 21 centers from Feb. 19 to May 11, 2020.

Participating centers were in France (13), Italy (3), the United States (1 in New York and 1 in Providence, R.I.), Israel (1), Belgium (1), and Spain (1).

Close to three-quarters of patients were men (73%), which is similar to multiple other studies, Dr. Pattou said. Patients were a mean age of 64 years and had a mean BMI of 28.1.

Half of patients had hypertension (52%), 29% had diabetes, 29% had hyperlipidemia, and 6.5% were current smokers.

Close to three-quarters (74%) required invasive mechanical ventilation, and 36% died within 28 days of ICU admission.

Each 5-kg/m² increase in BMI was associated with a 27% increased risk of mechanical ventilation in the overall cohort and a 65% increased risk of this outcome among women younger than 50 years, after adjustment for other risk factors.

Male sex and each 10-year increase in age were associated with an 82% and a 17% increased risk of ventilation, respectively, but hypertension, diabetes, hyperlipidemia, and current smoking were not associated with a greater risk. After adjustment for center, age, sex, and prespecified metabolic risk factors, obesity class III (BMI ≥ 40) was associated with a 68% increase in mortality, compared with the risk seen in lean patients.

The findings were similar across different centers.

“To our knowledge, this study represents the first international collaborative effort to explore the association of BMI with the outcomes of pneumonia among COVID-19 patients admitted to ICU,” said the investigators.

They conclude that “available evidence should foster more focused and effective interventions in COVID-19 patients with the highest risk of severe pneumonia, in order to reduce future strain on intensive care resources worldwide, and inform physio-pathological research to elucidate the mechanism of severe lung damage in COVID-19.”

The study did not receive specific funding. The authors have reported no relevant financial relationships.
 

A version of this article originally appeared on Medscape.com.

In a large international study of patients admitted to the ICU with COVID-19, the likelihood of having severe pneumonia (i.e., needing invasive mechanical ventilation) increased stepwise with increasing body mass index (BMI) – independent of diabetes, hypertension, dyslipidemia, or current smoking.

The main finding was a linear correlation between BMI and need for invasive mechanical ventilation, after adjustment for center, age, sex, and other prespecified metabolic risk factors.

Risk was “highest for older people and males, but the next most important risk factor to developing severe pneumonia if infected [was] obesity,” said François Pattou, MD, Centre Hospitalier Universitaire de Lille (France), who presented the findings at the ObesityWeek 2020 virtual meeting. The results were also recently published in a preprint article in The Lancet.

Dr. Pattou and colleagues first reported back in April that obesity is one of the biggest risk factors for severe COVID-19 infection, especially in younger patients. Many further reports linked the two, and the French researchers then set out to conduct the current large, international, multicenter cohort study.

“The high number of patients included here [allowed us] to disentangle the role of various metabolic cofactors and to show that obesity, not diabetes or hypertension, was the main determinant of severe pneumonia [after age and gender],” Dr. Pattou said in an interview.

And the impact of obesity was most pronounced in women younger than 50 years.
 

Patients with severe obesity must protect themselves

Of interest, the study also found an “obesity paradox” for mortality after admission to the ICU.

Specifically, compared with leaner patients (BMI < 25 kg/m²), those with severe obesity (obesity class III, BMI ≥ 40) had an increased risk of dying within 28 days of admission to ICU. But patients with overweight to moderate obesity (BMI 25-39.9) had a lower risk of this outcome.

“The second original finding of our study,” Dr. Pattou continued, was the “nonlinear relation observed between BMI and all-cause mortality rate in ICU patients.”

Matteo Rottoli, MD, PhD, author of a related study reported by in July, said the new trial “confirms the findings of our study, which are that obesity is an independent risk factor for intensive care admission and death.”

Dr. Rottoli, from Alma Mater Studiorum, University of Bologna, Italy, and colleagues found that in their population of patients with COVID-19, a BMI > 35 was associated with a greater risk of death.

The takeaway message from the research is that “obesity should be considered one of the most important parameters to identify the population at risk” of getting COVID-19 who need to take extra precautions such as social distancing, Dr. Rottoli stressed.

Dr. Pattou agrees, particularly when it comes to severe obesity.

Intensive care physicians have learned a lot in the past months about COVID-19 pneumonia and how to address it (such as not precipitating intubation, using corticosteroids), he explained.

“Importantly, the general population has also learned a lot, and we can hope that patients with obesity, especially those with severe obesity, will take extra measures to protect themselves, resulting in a decrease of the incidence of severe pneumonia in young and severely obese patients,” he added.
 

Untangling BMI from other metabolic risk factors

Dr. Pattou said that, from Dec. 16, 2019, to Nov. 1, 2020, more than 45 million people worldwide tested positive for COVID-19 and more than 1.2 million people died from it.

Multiple studies have reported that, among people with COVID-19, those with obesity are at higher risk of hospitalization, ICU admission, invasive ventilation, and death, but it had not been clear if BMI was an independent risk factor.

Dr. Pattou and colleagues aimed to examine the relationship between BMI and COVID-19 pneumonia severity, defined by the need for mechanical ventilation (primary outcome), as well as 28-day all-cause mortality (secondary outcome) among patients admitted to the ICU.

They also sought to disentangle the effect of BMI from other metabolic risk factors (diabetes, hypertension, dyslipidemia, and current smoking) and examine the influence of age and sex on outcomes.

They performed a retrospective analysis of 1,461 patients with confirmed COVID-19 (positive reverse polymerase chain reaction test using a nasal or pharyngeal swab specimen) who were admitted to the ICU at 21 centers from Feb. 19 to May 11, 2020.

Participating centers were in France (13), Italy (3), the United States (1 in New York and 1 in Providence, R.I.), Israel (1), Belgium (1), and Spain (1).

Close to three-quarters of patients were men (73%), which is similar to multiple other studies, Dr. Pattou said. Patients were a mean age of 64 years and had a mean BMI of 28.1.

Half of patients had hypertension (52%), 29% had diabetes, 29% had hyperlipidemia, and 6.5% were current smokers.

Close to three-quarters (74%) required invasive mechanical ventilation, and 36% died within 28 days of ICU admission.

Each 5-kg/m² increase in BMI was associated with a 27% increased risk of mechanical ventilation in the overall cohort and a 65% increased risk of this outcome among women younger than 50 years, after adjustment for other risk factors.

Male sex and each 10-year increase in age were associated with an 82% and a 17% increased risk of ventilation, respectively, but hypertension, diabetes, hyperlipidemia, and current smoking were not associated with a greater risk. After adjustment for center, age, sex, and prespecified metabolic risk factors, obesity class III (BMI ≥ 40) was associated with a 68% increase in mortality, compared with the risk seen in lean patients.

The findings were similar across different centers.

“To our knowledge, this study represents the first international collaborative effort to explore the association of BMI with the outcomes of pneumonia among COVID-19 patients admitted to ICU,” said the investigators.

They conclude that “available evidence should foster more focused and effective interventions in COVID-19 patients with the highest risk of severe pneumonia, in order to reduce future strain on intensive care resources worldwide, and inform physio-pathological research to elucidate the mechanism of severe lung damage in COVID-19.”

The study did not receive specific funding. The authors have reported no relevant financial relationships.
 

A version of this article originally appeared on Medscape.com.

In a large international study of patients admitted to the ICU with COVID-19, the likelihood of having severe pneumonia (i.e., needing invasive mechanical ventilation) increased stepwise with increasing body mass index (BMI) – independent of diabetes, hypertension, dyslipidemia, or current smoking.

The main finding was a linear correlation between BMI and need for invasive mechanical ventilation, after adjustment for center, age, sex, and other prespecified metabolic risk factors.

Risk was “highest for older people and males, but the next most important risk factor to developing severe pneumonia if infected [was] obesity,” said François Pattou, MD, Centre Hospitalier Universitaire de Lille (France), who presented the findings at the ObesityWeek 2020 virtual meeting. The results were also recently published in a preprint article in The Lancet.

Dr. Pattou and colleagues first reported back in April that obesity is one of the biggest risk factors for severe COVID-19 infection, especially in younger patients. Many further reports linked the two, and the French researchers then set out to conduct the current large, international, multicenter cohort study.

“The high number of patients included here [allowed us] to disentangle the role of various metabolic cofactors and to show that obesity, not diabetes or hypertension, was the main determinant of severe pneumonia [after age and gender],” Dr. Pattou said in an interview.

And the impact of obesity was most pronounced in women younger than 50 years.
 

Patients with severe obesity must protect themselves

Of interest, the study also found an “obesity paradox” for mortality after admission to the ICU.

Specifically, compared with leaner patients (BMI < 25 kg/m²), those with severe obesity (obesity class III, BMI ≥ 40) had an increased risk of dying within 28 days of admission to ICU. But patients with overweight to moderate obesity (BMI 25-39.9) had a lower risk of this outcome.

“The second original finding of our study,” Dr. Pattou continued, was the “nonlinear relation observed between BMI and all-cause mortality rate in ICU patients.”

Matteo Rottoli, MD, PhD, author of a related study reported by in July, said the new trial “confirms the findings of our study, which are that obesity is an independent risk factor for intensive care admission and death.”

Dr. Rottoli, from Alma Mater Studiorum, University of Bologna, Italy, and colleagues found that in their population of patients with COVID-19, a BMI > 35 was associated with a greater risk of death.

The takeaway message from the research is that “obesity should be considered one of the most important parameters to identify the population at risk” of getting COVID-19 who need to take extra precautions such as social distancing, Dr. Rottoli stressed.

Dr. Pattou agrees, particularly when it comes to severe obesity.

Intensive care physicians have learned a lot in the past months about COVID-19 pneumonia and how to address it (such as not precipitating intubation, using corticosteroids), he explained.

“Importantly, the general population has also learned a lot, and we can hope that patients with obesity, especially those with severe obesity, will take extra measures to protect themselves, resulting in a decrease of the incidence of severe pneumonia in young and severely obese patients,” he added.
 

Untangling BMI from other metabolic risk factors

Dr. Pattou said that, from Dec. 16, 2019, to Nov. 1, 2020, more than 45 million people worldwide tested positive for COVID-19 and more than 1.2 million people died from it.

Multiple studies have reported that, among people with COVID-19, those with obesity are at higher risk of hospitalization, ICU admission, invasive ventilation, and death, but it had not been clear if BMI was an independent risk factor.

Dr. Pattou and colleagues aimed to examine the relationship between BMI and COVID-19 pneumonia severity, defined by the need for mechanical ventilation (primary outcome), as well as 28-day all-cause mortality (secondary outcome) among patients admitted to the ICU.

They also sought to disentangle the effect of BMI from other metabolic risk factors (diabetes, hypertension, dyslipidemia, and current smoking) and examine the influence of age and sex on outcomes.

They performed a retrospective analysis of 1,461 patients with confirmed COVID-19 (positive reverse polymerase chain reaction test using a nasal or pharyngeal swab specimen) who were admitted to the ICU at 21 centers from Feb. 19 to May 11, 2020.

Participating centers were in France (13), Italy (3), the United States (1 in New York and 1 in Providence, R.I.), Israel (1), Belgium (1), and Spain (1).

Close to three-quarters of patients were men (73%), which is similar to multiple other studies, Dr. Pattou said. Patients were a mean age of 64 years and had a mean BMI of 28.1.

Half of patients had hypertension (52%), 29% had diabetes, 29% had hyperlipidemia, and 6.5% were current smokers.

Close to three-quarters (74%) required invasive mechanical ventilation, and 36% died within 28 days of ICU admission.

Each 5-kg/m² increase in BMI was associated with a 27% increased risk of mechanical ventilation in the overall cohort and a 65% increased risk of this outcome among women younger than 50 years, after adjustment for other risk factors.

Male sex and each 10-year increase in age were associated with an 82% and a 17% increased risk of ventilation, respectively, but hypertension, diabetes, hyperlipidemia, and current smoking were not associated with a greater risk. After adjustment for center, age, sex, and prespecified metabolic risk factors, obesity class III (BMI ≥ 40) was associated with a 68% increase in mortality, compared with the risk seen in lean patients.

The findings were similar across different centers.

“To our knowledge, this study represents the first international collaborative effort to explore the association of BMI with the outcomes of pneumonia among COVID-19 patients admitted to ICU,” said the investigators.

They conclude that “available evidence should foster more focused and effective interventions in COVID-19 patients with the highest risk of severe pneumonia, in order to reduce future strain on intensive care resources worldwide, and inform physio-pathological research to elucidate the mechanism of severe lung damage in COVID-19.”

The study did not receive specific funding. The authors have reported no relevant financial relationships.
 

A version of this article originally appeared on Medscape.com.

Plagued by false starts, a few dashed hopes, but with perhaps a glimmer of light on the horizon, the race to find an effective treatment for COVID-19 continues. At last count, more than 300 treatments and 200 vaccines were in preclinical or clinical development (not to mention the numerous existing agents that are being evaluated for repurposing).

There is also a renewed interest in cannabinoid therapeutics — in particular, the nonpsychoactive agent cannabidiol (CBD) and the prospect of its modulating inflammatory and other disease-associated clinical indices, including SARS-CoV-2–induced viral load, hyperinflammation, the cytokine storm, and acute respiratory distress syndrome (ARDS).

Long hobbled by regulatory, political, and financial barriers, CBD’s potential ability to knock back COVID-19–related inflammation might just open doors that have been closed for years to CBD researchers.
 

Why CBD and why now?

CBD and the resulting therapeutics have been plagued by a complicated association with recreational cannabis use. It’s been just 2 years since CBD-based therapeutics moved into mainstream medicine — the US Food and Drug Administration (FDA) approved Epidiolex oral solution for the treatment of Lennox-Gastaut syndrome and Dravet syndrome, and in August, the FDA approved it for tuberous sclerosis complex.

CBD’s mechanism of action has not been fully elucidated, but on the basis of its role in immune responses — well described in research spanning more than two decades — it›s not surprising that cannabinoid researchers have thrown their hats into the COVID-19 drug development ring.

The anti-inflammatory potential of CBD is substantial and appears to be related to the fact that it shares 20 protein targets common to inflammation-related pathways, Jenny Wilkerson, PhD, research assistant professor at the University of Florida School of Pharmacy, Gainesville, Florida, explained to Medscape Medical News.

Among the various trials that are currently recruiting or are underway is one that is slated for completion this fall. CANDIDATE (Cannabidiol for COVID-19 Patients With Mild-to-Moderate COVID-19) is a randomized, controlled, double-blind study led by Brazilian researchers at the University of São Paulo. The study, which began recruitment this past August, enrolled 100 patients, 50 in the active treatment group (who received capsulated CBD 300 mg daily for 14 days plus pharmacologic therapy [antipyretics] and clinical measures) and 50 who received placebo.

The primary outcome is intended to help clarify the potential role of oral CBD for preventing COVID-19 disease progression, modifying disease-associated clinical indices, and modulating inflammatory parameters, such as the cytokine storm, according to lead investigator Jose Alexandre de Souza Crippa, MD, PhD, professor of neuropsychology at the Ribeirao Preto Medical School at the University of São Paulo in Brazil, in the description of the study on clinicaltrials.gov. Crippa declined to provide any additional information about the trial in an email to Medscape Medical News.
 

Calming or preventing the storm

While Crippa and colleagues wrap up their CBD trial in South America, several North American and Canadian researchers are seeking to clarify and address one of the most therapeutically challenging aspects of SARS-CoV-2 infection — the lung macrophage–orchestrated hyperinflammatory response.

Although hyperinflammation is not unique to SARS-CoV-2 infection, disease severity and COVID-19–related mortality have been linked to this rapid and prolonged surge of inflammatory cytokines (eg, interleukin 6 [IL-6], IL-10, tumor necrosis factors [TNF], and chemokines) and the cytokine storm.

“When you stimulate CB2 receptors (involved in fighting inflammation), you get a release of the same inflammatory cytokines that are involved in COVID,” Cecilia Costiniuk, MD, associate professor and researcher at the Research Institute of the McGill University Health Center, Montreal, Canada, told Medscape Medical News.

“So, if you can act on this receptor, you might be able to reduce the release of those damaging cytokines that are causing ARDS, lung damage, etc,” she explained. Targeting these inflammatory mediators has been a key strategy in research aimed at reducing COVID-19 severity and related mortality, which is where CBD comes into play.

“CBD is a very powerful immune regulator. It keeps the [immune] engine on, but it doesn’t push the gas pedal, and it doesn’t push the brake completely,” Babak Baban, PhD, professor and immunologist at the Dental College of Georgia at Augusta University, told Medscape Medical News.

To explore the effectiveness of CBD in reducing hyperactivated inflammatory reactions, Baban and colleagues examined the potential of CBD to ameliorate ARDS in a murine model. The group divided wild-type male mice into sham, control, and treatment groups.

The sham group received intranasal phosphate buffered saline; the treatment and control groups received a polyriboinosinic:polycytidylic acid (poly I:C) double-stranded RNA analogue (100 mcg daily for 3 days) to simulate the cytokine storm and clinical ARDS symptoms.

Following the second poly I:C dose, the treatment group received CBD 5 mg/kg intraperitoneally every other day for 6 days. The mice were sacrificed on day 8.

The study results, published in July in Cannabis and Cannabinoid Research, first confirmed that the poly I:C model simulated the cytokine storm in ARDS, reducing blood oxygen saturation by as much as 10% (from ±81.6% to ±72.2%).

Intraperitoneally administered CBD appeared to reverse these ARDS-like trends. “We observed a significant improvement in severe lymphopenia, a mild decline in the ratio of neutrophils to T cells, and significant reductions in levels of [inflammatory and immune factors] IL-6, IFN-gamma [interferon gamma], and in TNF-alpha after the second CBD dose,” Baban said.

There was also a marked downregulation in infiltrating neutrophils and macrophages in the lung, leading to partial restoration of lung morphology and structure. The investigators write that this suggests “a counter inflammatory role for CBD to limit ARDS progression.”

Additional findings from a follow-up study published in mid-October “provide strong data that CBD may partially assert its beneficial and protective impact through its regulation of the apelin peptide,” wrote Baban in an email to Medscape Medical News.

“Apelin may also be a reliable biomarker for early diagnosis of ARDS in general, and in COVID-19 in particular,” he wrote.

Questions remain concerning dose response and whether CBD alone or in combination with other phytocannabinoids is more effective for treating COVID-19. Timing is likewise unclear.

Baban explained that as a result of the biphasic nature of COVID-19, the “sweet spot” appears to be just before the innate immune response progresses into an inflammation-driven response and fibrotic lung damage occurs.

But Wilkerson isn’t as convinced. She said that as with a thermostat, the endocannabinoid system needs tweaking to get it in the right place, that is, to achieve immune homeostasis. The COVID cytokine storm is highly unpredictable, she added, saying, “Right now, the timing for controlling the COVID cytokine storm is really a moving target.”
 

Is safety a concern?

Safety questions are expected to arise, especially in relation to COVID-19. CBD is not risk free, and one size does not fit all. Human CBD studies report gastrointestinal and somnolent effects, as well as drug-drug interactions.

Findings from a recent systematic review of randomized, controlled CBD trials support overall tolerability, suggesting that serious adverse events are rare. Such events are believed to be related to drug-drug interactions rather than to CBD itself. On the flip side, it is nonintoxicating, and there does not appear to be potential for abuse.

“It’s generally well tolerated,” Wilkerson said. “There’ve now been several clinical trials in numerous patient population settings where basically the only time you really start to have issues is where you have patients on very select agents. But this is where a pharmacist would come into play.”

Costiniuk agreed: “Just because it’s cannabis, it doesn’t mean that there’s going to be strange or unusual effects; these people [ie, those with severe COVID-19] are in the hospital and monitored very closely.”
 

Delving into the weeds: What’s next?

Although non-COVID-19 cannabinoid researchers have encountered regulatory roadblocks, several research groups that have had the prescience to dive in at the right time are gaining momentum.

Baban’s team has connected with one of the nation’s few academic laboratories authorized to work with the SARS-CoV-2 virus and are awaiting protocol approval so that they can reproduce their research, this time using two CBD formulations (injectable and inhaled).

If findings are positive, they will move forward quickly to meet with the FDA, Baban said, adding that the team is also collaborating with two organizations to conduct human clinical trials in hopes of pushing up timing.

The initial article caught the eye of the World Health Organization, which included it in its global literature on the coronavirus resource section.

Israeli researchers have also been quite busy. InnoCan Pharma and Tel Aviv University are collaborating to explore the potential for CBD-loaded exosomes (minute extracellular particles that mediate intracellular communication, including via innate and adaptive immune responses). The group plans to use these loaded exosomes to target and facilitate recovery of COVID-19–damaged lung cells.

From a broader perspective, the prospects for harnessing cannabinoids for immune modulation will be more thoroughly explored in a special issue of Cannabis and Cannabinoid Research, which has extended its current call for papers, studies, abstracts, and conference proceedings until the end of December.

Like many of the therapeutic strategies under investigation for the treatment of COVID-19, studies in CBD may continue to raise more questions than answers.

Still, Wilkerson is optimistic. “Taken together, these studies along with countless others suggest that the complex pharmacophore of Cannabis sativa may hold therapeutic utility to treat lung inflammation, such as what is seen in a COVID-19 cytokine storm,» she told Medscape Medical News. “I’m very excited to see what comes out of the research.”

Baban, Wilkerson, and Costiniuk have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Plagued by false starts, a few dashed hopes, but with perhaps a glimmer of light on the horizon, the race to find an effective treatment for COVID-19 continues. At last count, more than 300 treatments and 200 vaccines were in preclinical or clinical development (not to mention the numerous existing agents that are being evaluated for repurposing).

There is also a renewed interest in cannabinoid therapeutics — in particular, the nonpsychoactive agent cannabidiol (CBD) and the prospect of its modulating inflammatory and other disease-associated clinical indices, including SARS-CoV-2–induced viral load, hyperinflammation, the cytokine storm, and acute respiratory distress syndrome (ARDS).

Long hobbled by regulatory, political, and financial barriers, CBD’s potential ability to knock back COVID-19–related inflammation might just open doors that have been closed for years to CBD researchers.
 

Why CBD and why now?

CBD and the resulting therapeutics have been plagued by a complicated association with recreational cannabis use. It’s been just 2 years since CBD-based therapeutics moved into mainstream medicine — the US Food and Drug Administration (FDA) approved Epidiolex oral solution for the treatment of Lennox-Gastaut syndrome and Dravet syndrome, and in August, the FDA approved it for tuberous sclerosis complex.

CBD’s mechanism of action has not been fully elucidated, but on the basis of its role in immune responses — well described in research spanning more than two decades — it›s not surprising that cannabinoid researchers have thrown their hats into the COVID-19 drug development ring.

The anti-inflammatory potential of CBD is substantial and appears to be related to the fact that it shares 20 protein targets common to inflammation-related pathways, Jenny Wilkerson, PhD, research assistant professor at the University of Florida School of Pharmacy, Gainesville, Florida, explained to Medscape Medical News.

Among the various trials that are currently recruiting or are underway is one that is slated for completion this fall. CANDIDATE (Cannabidiol for COVID-19 Patients With Mild-to-Moderate COVID-19) is a randomized, controlled, double-blind study led by Brazilian researchers at the University of São Paulo. The study, which began recruitment this past August, enrolled 100 patients, 50 in the active treatment group (who received capsulated CBD 300 mg daily for 14 days plus pharmacologic therapy [antipyretics] and clinical measures) and 50 who received placebo.

The primary outcome is intended to help clarify the potential role of oral CBD for preventing COVID-19 disease progression, modifying disease-associated clinical indices, and modulating inflammatory parameters, such as the cytokine storm, according to lead investigator Jose Alexandre de Souza Crippa, MD, PhD, professor of neuropsychology at the Ribeirao Preto Medical School at the University of São Paulo in Brazil, in the description of the study on clinicaltrials.gov. Crippa declined to provide any additional information about the trial in an email to Medscape Medical News.
 

Calming or preventing the storm

While Crippa and colleagues wrap up their CBD trial in South America, several North American and Canadian researchers are seeking to clarify and address one of the most therapeutically challenging aspects of SARS-CoV-2 infection — the lung macrophage–orchestrated hyperinflammatory response.

Although hyperinflammation is not unique to SARS-CoV-2 infection, disease severity and COVID-19–related mortality have been linked to this rapid and prolonged surge of inflammatory cytokines (eg, interleukin 6 [IL-6], IL-10, tumor necrosis factors [TNF], and chemokines) and the cytokine storm.

“When you stimulate CB2 receptors (involved in fighting inflammation), you get a release of the same inflammatory cytokines that are involved in COVID,” Cecilia Costiniuk, MD, associate professor and researcher at the Research Institute of the McGill University Health Center, Montreal, Canada, told Medscape Medical News.

“So, if you can act on this receptor, you might be able to reduce the release of those damaging cytokines that are causing ARDS, lung damage, etc,” she explained. Targeting these inflammatory mediators has been a key strategy in research aimed at reducing COVID-19 severity and related mortality, which is where CBD comes into play.

“CBD is a very powerful immune regulator. It keeps the [immune] engine on, but it doesn’t push the gas pedal, and it doesn’t push the brake completely,” Babak Baban, PhD, professor and immunologist at the Dental College of Georgia at Augusta University, told Medscape Medical News.

To explore the effectiveness of CBD in reducing hyperactivated inflammatory reactions, Baban and colleagues examined the potential of CBD to ameliorate ARDS in a murine model. The group divided wild-type male mice into sham, control, and treatment groups.

The sham group received intranasal phosphate buffered saline; the treatment and control groups received a polyriboinosinic:polycytidylic acid (poly I:C) double-stranded RNA analogue (100 mcg daily for 3 days) to simulate the cytokine storm and clinical ARDS symptoms.

Following the second poly I:C dose, the treatment group received CBD 5 mg/kg intraperitoneally every other day for 6 days. The mice were sacrificed on day 8.

The study results, published in July in Cannabis and Cannabinoid Research, first confirmed that the poly I:C model simulated the cytokine storm in ARDS, reducing blood oxygen saturation by as much as 10% (from ±81.6% to ±72.2%).

Intraperitoneally administered CBD appeared to reverse these ARDS-like trends. “We observed a significant improvement in severe lymphopenia, a mild decline in the ratio of neutrophils to T cells, and significant reductions in levels of [inflammatory and immune factors] IL-6, IFN-gamma [interferon gamma], and in TNF-alpha after the second CBD dose,” Baban said.

There was also a marked downregulation in infiltrating neutrophils and macrophages in the lung, leading to partial restoration of lung morphology and structure. The investigators write that this suggests “a counter inflammatory role for CBD to limit ARDS progression.”

Additional findings from a follow-up study published in mid-October “provide strong data that CBD may partially assert its beneficial and protective impact through its regulation of the apelin peptide,” wrote Baban in an email to Medscape Medical News.

“Apelin may also be a reliable biomarker for early diagnosis of ARDS in general, and in COVID-19 in particular,” he wrote.

Questions remain concerning dose response and whether CBD alone or in combination with other phytocannabinoids is more effective for treating COVID-19. Timing is likewise unclear.

Baban explained that as a result of the biphasic nature of COVID-19, the “sweet spot” appears to be just before the innate immune response progresses into an inflammation-driven response and fibrotic lung damage occurs.

But Wilkerson isn’t as convinced. She said that as with a thermostat, the endocannabinoid system needs tweaking to get it in the right place, that is, to achieve immune homeostasis. The COVID cytokine storm is highly unpredictable, she added, saying, “Right now, the timing for controlling the COVID cytokine storm is really a moving target.”
 

Is safety a concern?

Safety questions are expected to arise, especially in relation to COVID-19. CBD is not risk free, and one size does not fit all. Human CBD studies report gastrointestinal and somnolent effects, as well as drug-drug interactions.

Findings from a recent systematic review of randomized, controlled CBD trials support overall tolerability, suggesting that serious adverse events are rare. Such events are believed to be related to drug-drug interactions rather than to CBD itself. On the flip side, it is nonintoxicating, and there does not appear to be potential for abuse.

“It’s generally well tolerated,” Wilkerson said. “There’ve now been several clinical trials in numerous patient population settings where basically the only time you really start to have issues is where you have patients on very select agents. But this is where a pharmacist would come into play.”

Costiniuk agreed: “Just because it’s cannabis, it doesn’t mean that there’s going to be strange or unusual effects; these people [ie, those with severe COVID-19] are in the hospital and monitored very closely.”
 

Delving into the weeds: What’s next?

Although non-COVID-19 cannabinoid researchers have encountered regulatory roadblocks, several research groups that have had the prescience to dive in at the right time are gaining momentum.

Baban’s team has connected with one of the nation’s few academic laboratories authorized to work with the SARS-CoV-2 virus and are awaiting protocol approval so that they can reproduce their research, this time using two CBD formulations (injectable and inhaled).

If findings are positive, they will move forward quickly to meet with the FDA, Baban said, adding that the team is also collaborating with two organizations to conduct human clinical trials in hopes of pushing up timing.

The initial article caught the eye of the World Health Organization, which included it in its global literature on the coronavirus resource section.

Israeli researchers have also been quite busy. InnoCan Pharma and Tel Aviv University are collaborating to explore the potential for CBD-loaded exosomes (minute extracellular particles that mediate intracellular communication, including via innate and adaptive immune responses). The group plans to use these loaded exosomes to target and facilitate recovery of COVID-19–damaged lung cells.

From a broader perspective, the prospects for harnessing cannabinoids for immune modulation will be more thoroughly explored in a special issue of Cannabis and Cannabinoid Research, which has extended its current call for papers, studies, abstracts, and conference proceedings until the end of December.

Like many of the therapeutic strategies under investigation for the treatment of COVID-19, studies in CBD may continue to raise more questions than answers.

Still, Wilkerson is optimistic. “Taken together, these studies along with countless others suggest that the complex pharmacophore of Cannabis sativa may hold therapeutic utility to treat lung inflammation, such as what is seen in a COVID-19 cytokine storm,» she told Medscape Medical News. “I’m very excited to see what comes out of the research.”

Baban, Wilkerson, and Costiniuk have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Plagued by false starts, a few dashed hopes, but with perhaps a glimmer of light on the horizon, the race to find an effective treatment for COVID-19 continues. At last count, more than 300 treatments and 200 vaccines were in preclinical or clinical development (not to mention the numerous existing agents that are being evaluated for repurposing).

There is also a renewed interest in cannabinoid therapeutics — in particular, the nonpsychoactive agent cannabidiol (CBD) and the prospect of its modulating inflammatory and other disease-associated clinical indices, including SARS-CoV-2–induced viral load, hyperinflammation, the cytokine storm, and acute respiratory distress syndrome (ARDS).

Long hobbled by regulatory, political, and financial barriers, CBD’s potential ability to knock back COVID-19–related inflammation might just open doors that have been closed for years to CBD researchers.
 

Why CBD and why now?

CBD and the resulting therapeutics have been plagued by a complicated association with recreational cannabis use. It’s been just 2 years since CBD-based therapeutics moved into mainstream medicine — the US Food and Drug Administration (FDA) approved Epidiolex oral solution for the treatment of Lennox-Gastaut syndrome and Dravet syndrome, and in August, the FDA approved it for tuberous sclerosis complex.

CBD’s mechanism of action has not been fully elucidated, but on the basis of its role in immune responses — well described in research spanning more than two decades — it›s not surprising that cannabinoid researchers have thrown their hats into the COVID-19 drug development ring.

The anti-inflammatory potential of CBD is substantial and appears to be related to the fact that it shares 20 protein targets common to inflammation-related pathways, Jenny Wilkerson, PhD, research assistant professor at the University of Florida School of Pharmacy, Gainesville, Florida, explained to Medscape Medical News.

Among the various trials that are currently recruiting or are underway is one that is slated for completion this fall. CANDIDATE (Cannabidiol for COVID-19 Patients With Mild-to-Moderate COVID-19) is a randomized, controlled, double-blind study led by Brazilian researchers at the University of São Paulo. The study, which began recruitment this past August, enrolled 100 patients, 50 in the active treatment group (who received capsulated CBD 300 mg daily for 14 days plus pharmacologic therapy [antipyretics] and clinical measures) and 50 who received placebo.

The primary outcome is intended to help clarify the potential role of oral CBD for preventing COVID-19 disease progression, modifying disease-associated clinical indices, and modulating inflammatory parameters, such as the cytokine storm, according to lead investigator Jose Alexandre de Souza Crippa, MD, PhD, professor of neuropsychology at the Ribeirao Preto Medical School at the University of São Paulo in Brazil, in the description of the study on clinicaltrials.gov. Crippa declined to provide any additional information about the trial in an email to Medscape Medical News.
 

Calming or preventing the storm

While Crippa and colleagues wrap up their CBD trial in South America, several North American and Canadian researchers are seeking to clarify and address one of the most therapeutically challenging aspects of SARS-CoV-2 infection — the lung macrophage–orchestrated hyperinflammatory response.

Although hyperinflammation is not unique to SARS-CoV-2 infection, disease severity and COVID-19–related mortality have been linked to this rapid and prolonged surge of inflammatory cytokines (eg, interleukin 6 [IL-6], IL-10, tumor necrosis factors [TNF], and chemokines) and the cytokine storm.

“When you stimulate CB2 receptors (involved in fighting inflammation), you get a release of the same inflammatory cytokines that are involved in COVID,” Cecilia Costiniuk, MD, associate professor and researcher at the Research Institute of the McGill University Health Center, Montreal, Canada, told Medscape Medical News.

“So, if you can act on this receptor, you might be able to reduce the release of those damaging cytokines that are causing ARDS, lung damage, etc,” she explained. Targeting these inflammatory mediators has been a key strategy in research aimed at reducing COVID-19 severity and related mortality, which is where CBD comes into play.

“CBD is a very powerful immune regulator. It keeps the [immune] engine on, but it doesn’t push the gas pedal, and it doesn’t push the brake completely,” Babak Baban, PhD, professor and immunologist at the Dental College of Georgia at Augusta University, told Medscape Medical News.

To explore the effectiveness of CBD in reducing hyperactivated inflammatory reactions, Baban and colleagues examined the potential of CBD to ameliorate ARDS in a murine model. The group divided wild-type male mice into sham, control, and treatment groups.

The sham group received intranasal phosphate buffered saline; the treatment and control groups received a polyriboinosinic:polycytidylic acid (poly I:C) double-stranded RNA analogue (100 mcg daily for 3 days) to simulate the cytokine storm and clinical ARDS symptoms.

Following the second poly I:C dose, the treatment group received CBD 5 mg/kg intraperitoneally every other day for 6 days. The mice were sacrificed on day 8.

The study results, published in July in Cannabis and Cannabinoid Research, first confirmed that the poly I:C model simulated the cytokine storm in ARDS, reducing blood oxygen saturation by as much as 10% (from ±81.6% to ±72.2%).

Intraperitoneally administered CBD appeared to reverse these ARDS-like trends. “We observed a significant improvement in severe lymphopenia, a mild decline in the ratio of neutrophils to T cells, and significant reductions in levels of [inflammatory and immune factors] IL-6, IFN-gamma [interferon gamma], and in TNF-alpha after the second CBD dose,” Baban said.

There was also a marked downregulation in infiltrating neutrophils and macrophages in the lung, leading to partial restoration of lung morphology and structure. The investigators write that this suggests “a counter inflammatory role for CBD to limit ARDS progression.”

Additional findings from a follow-up study published in mid-October “provide strong data that CBD may partially assert its beneficial and protective impact through its regulation of the apelin peptide,” wrote Baban in an email to Medscape Medical News.

“Apelin may also be a reliable biomarker for early diagnosis of ARDS in general, and in COVID-19 in particular,” he wrote.

Questions remain concerning dose response and whether CBD alone or in combination with other phytocannabinoids is more effective for treating COVID-19. Timing is likewise unclear.

Baban explained that as a result of the biphasic nature of COVID-19, the “sweet spot” appears to be just before the innate immune response progresses into an inflammation-driven response and fibrotic lung damage occurs.

But Wilkerson isn’t as convinced. She said that as with a thermostat, the endocannabinoid system needs tweaking to get it in the right place, that is, to achieve immune homeostasis. The COVID cytokine storm is highly unpredictable, she added, saying, “Right now, the timing for controlling the COVID cytokine storm is really a moving target.”
 

Is safety a concern?

Safety questions are expected to arise, especially in relation to COVID-19. CBD is not risk free, and one size does not fit all. Human CBD studies report gastrointestinal and somnolent effects, as well as drug-drug interactions.

Findings from a recent systematic review of randomized, controlled CBD trials support overall tolerability, suggesting that serious adverse events are rare. Such events are believed to be related to drug-drug interactions rather than to CBD itself. On the flip side, it is nonintoxicating, and there does not appear to be potential for abuse.

“It’s generally well tolerated,” Wilkerson said. “There’ve now been several clinical trials in numerous patient population settings where basically the only time you really start to have issues is where you have patients on very select agents. But this is where a pharmacist would come into play.”

Costiniuk agreed: “Just because it’s cannabis, it doesn’t mean that there’s going to be strange or unusual effects; these people [ie, those with severe COVID-19] are in the hospital and monitored very closely.”
 

Delving into the weeds: What’s next?

Although non-COVID-19 cannabinoid researchers have encountered regulatory roadblocks, several research groups that have had the prescience to dive in at the right time are gaining momentum.

Baban’s team has connected with one of the nation’s few academic laboratories authorized to work with the SARS-CoV-2 virus and are awaiting protocol approval so that they can reproduce their research, this time using two CBD formulations (injectable and inhaled).

If findings are positive, they will move forward quickly to meet with the FDA, Baban said, adding that the team is also collaborating with two organizations to conduct human clinical trials in hopes of pushing up timing.

The initial article caught the eye of the World Health Organization, which included it in its global literature on the coronavirus resource section.

Israeli researchers have also been quite busy. InnoCan Pharma and Tel Aviv University are collaborating to explore the potential for CBD-loaded exosomes (minute extracellular particles that mediate intracellular communication, including via innate and adaptive immune responses). The group plans to use these loaded exosomes to target and facilitate recovery of COVID-19–damaged lung cells.

From a broader perspective, the prospects for harnessing cannabinoids for immune modulation will be more thoroughly explored in a special issue of Cannabis and Cannabinoid Research, which has extended its current call for papers, studies, abstracts, and conference proceedings until the end of December.

Like many of the therapeutic strategies under investigation for the treatment of COVID-19, studies in CBD may continue to raise more questions than answers.

Still, Wilkerson is optimistic. “Taken together, these studies along with countless others suggest that the complex pharmacophore of Cannabis sativa may hold therapeutic utility to treat lung inflammation, such as what is seen in a COVID-19 cytokine storm,» she told Medscape Medical News. “I’m very excited to see what comes out of the research.”

Baban, Wilkerson, and Costiniuk have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

People with a history of heart failure – no matter the type – face more complications and death than their peers without HF once hospitalized with COVID-19, a new observational study shows.

A history of HF was associated with a near doubling risk of in-hospital mortality and ICU care and more than a tripling risk of mechanical ventilation despite adjustment for 18 factors including race, obesity, diabetes, previous treatment with renin-angiotensin-aldosterone system (RAAS) inhibitors, and severity of illness.

Adverse outcomes were high regardless of whether patients had HF with a preserved, mid-range, or reduced left ventricular ejection fraction (HFpEF/HFmrEF/HFrEF).

“That for me was the real zinger,” senior author Anuradha Lala, MD, said in an interview . “Because as clinicians, oftentimes, and wrongly so, we think this person has preserved ejection fraction, so they’re not needing my heart failure expertise as much as someone with heart failure with reduced ejection fraction.”

In the peak of the pandemic, that may have meant triaging patients with HFpEF to a regular floor, whereas those with HFrEF were seen by the specialist team.

“What this alerted me to is to take heart failure as a diagnosis very seriously, regardless of ejection fraction, and that is very much in line with all of the emerging data about heart failure with preserved ejection fraction,” said Dr. Lala, from the Icahn School of Medicine at Mount Sinai, New York.

“Now when I see patients in the clinic, I incorporate part of our visit to talking about what they are doing to prevent COVID, which I really wasn’t doing before. It was like ‘Oh yeah, what crazy times we’re dealing with’ and then addressing their heart failure as I normally would,” she said. “But now, interwoven into every visit is: Are you wearing a mask, what’s your social distancing policy, who are you living with at home, has anyone at home or who you’ve interacted with been sick? I’m asking those questions just as a knee-jerk reaction for these patients because I know the repercussions. We have to keep in mind these are observational studies, so I can’t prove causality but these are observations that are, nonetheless, quite robust.”

Although cardiovascular disease, including HF, is recognized as a risk factor for worse outcomes in COVID-19 patients, data are sparse on the clinical course and prognosis of patients with preexisting HF.

“I would have expected that there would have been a gradation of risk from the people with very low ejection fractions up into the normal range, but here it didn’t seem to matter at all. So that’s an important point that bad outcomes were independent of ejection fraction,” commented Lee Goldberg, MD, professor of medicine and chief of advanced heart failure and cardiac transplant at the University of Pennsylvania, Philadelphia.

The study also validated that there is no association between use of RAAS inhibitors and bad outcomes in patients with COVID-19, he said.

Although this has been demonstrated in several studies, concerns were raised early in the pandemic that ACE inhibitors and angiotensin receptor blockers could facilitate infection with SARS-CoV-2 and increase the risk of severe or lethal COVID-19.  

“For most clinicians that question has been put to bed, but we’re still getting patients that will ask during office visits ‘Is it safe for me to stay on?’ They still have that doubt [about] ‘Are we doing the right thing?’ ” Dr. Goldberg said.

“We can reassure them now. A lot of us are able to say there’s nothing to that, we’re very clear about this, stay on the meds. If anything, there’s data that suggest actually it may be better to be on an ACE inhibitor; that the hospitalizations were shorter and the outcomes were a little bit better.”  

For the current study, published online Oct. 28 in the Journal of the American College of Cardiology, the investigators analyzed 6,439 patients admitted for COVID-19 at one of five Mount Sinai Health System hospitals in New York between Feb. 27 and June 26. Their mean age was 65.3 years, 45% were women, and one-third were treated with RAAS inhibitors before admission.

Using ICD-9/10 codes and individual chart review, HF was identified in 422 patients (6.6%), of which 250 patients had HFpEF (≥50%), 44 had HFmrEF (41%-49%), and 128 had HFrEF (≤40%).

Patients with HFpEF were older, more frequently women with a higher body mass index and history of lung disease than patients with HFrEF, whereas those with HFmrEF fell in between.

The HFpEF group was also treated with hydroxychloroquine or macrolides and noninvasive ventilation more frequently than the other two groups, whereas antiplatelet and neurohormonal therapies were more common in the HFrEF group.

Patients with a history of HF had significantly longer hospital stays than those without HF (8 days vs. 6 days), increased need for intubation (22.8% vs. 11.9%) and ICU care (23.2% vs. 16.6%), and worse in-hospital mortality (40% vs. 24.9%).

After multivariable regression adjustment, HF persisted as an independent risk factor for ICU care (odds ratio, 1.71; 95% CI, 1.25-2.34), intubation and mechanical ventilation (OR, 3.64; 95% CI, 2.56-5.16), and in-hospital mortality (OR, 1.88; 95% CI, 1.27-2.78).

“I knew to expect higher rates of adverse outcomes but I didn’t expect it to be nearly a twofold increase,” Dr. Lala said. “I thought that was pretty powerful.”

No significant differences were seen across LVEF categories in length of stay, need for ICU care, intubation and mechanical ventilation, acute kidney injury, shock, thromboembolic events, arrhythmias, or 30-day readmission rates.

However, cardiogenic shock (7.8% vs. 2.3% vs. 2%) and HF-related causes for 30-day readmissions (47.1% vs. 0% vs. 8.6%) were significantly higher in patients with HFrEF than in those with HFmrEF or HFpEF.

Also, mortality was lower in those with HFmrEF (22.7%) than with HFrEF (38.3%) and HFpEF (44%). The group was small but the “results suggested that patients with HFmrEF could have a better prognosis, because they can represent a distinct and more favorable HF phenotype,” the authors wrote.

The statistical testing didn’t show much difference and the patient numbers were very small, noted Dr. Goldberg. “So they might be overreaching a little bit there.”

“To me, the take-home message is that just having the phenotype of heart failure, regardless of EF, is associated with bad outcomes and we need to be vigilant on two fronts,” he said. “We really need to be doing prevention in the folks with heart failure because if they get COVID their outcomes are not going to be as good. Second, as clinicians, if we see a patient presenting with COVID who has a history of heart failure we may want to be much more vigilant with that individual than we might otherwise be. So I think there’s something to be said for kind of risk-stratifying people in that way.”

Dr. Goldberg pointed out that the study had many “amazing strengths,” including a large, racially diverse population, direct chart review to identify HF patients, and capturing a patient’s specific HF phenotype.  

Weaknesses are that it was a single-center study, so the biases of how these patients were treated are not easily controlled for, he said. “We also don’t know when the hospital system was very strained as they were making some decisions: Were the older patients who had advanced heart and lung disease ultimately less aggressively treated because they felt they wouldn’t survive?”

Dr. Lala has received personal fees from Zoll, outside the submitted work. Dr. Goldberg reported research funding with Respicardia and consulting fees from Abbott.

This article first appeared on Medscape.com.

People with a history of heart failure – no matter the type – face more complications and death than their peers without HF once hospitalized with COVID-19, a new observational study shows.

A history of HF was associated with a near doubling risk of in-hospital mortality and ICU care and more than a tripling risk of mechanical ventilation despite adjustment for 18 factors including race, obesity, diabetes, previous treatment with renin-angiotensin-aldosterone system (RAAS) inhibitors, and severity of illness.

Adverse outcomes were high regardless of whether patients had HF with a preserved, mid-range, or reduced left ventricular ejection fraction (HFpEF/HFmrEF/HFrEF).

“That for me was the real zinger,” senior author Anuradha Lala, MD, said in an interview . “Because as clinicians, oftentimes, and wrongly so, we think this person has preserved ejection fraction, so they’re not needing my heart failure expertise as much as someone with heart failure with reduced ejection fraction.”

In the peak of the pandemic, that may have meant triaging patients with HFpEF to a regular floor, whereas those with HFrEF were seen by the specialist team.

“What this alerted me to is to take heart failure as a diagnosis very seriously, regardless of ejection fraction, and that is very much in line with all of the emerging data about heart failure with preserved ejection fraction,” said Dr. Lala, from the Icahn School of Medicine at Mount Sinai, New York.

“Now when I see patients in the clinic, I incorporate part of our visit to talking about what they are doing to prevent COVID, which I really wasn’t doing before. It was like ‘Oh yeah, what crazy times we’re dealing with’ and then addressing their heart failure as I normally would,” she said. “But now, interwoven into every visit is: Are you wearing a mask, what’s your social distancing policy, who are you living with at home, has anyone at home or who you’ve interacted with been sick? I’m asking those questions just as a knee-jerk reaction for these patients because I know the repercussions. We have to keep in mind these are observational studies, so I can’t prove causality but these are observations that are, nonetheless, quite robust.”

Although cardiovascular disease, including HF, is recognized as a risk factor for worse outcomes in COVID-19 patients, data are sparse on the clinical course and prognosis of patients with preexisting HF.

“I would have expected that there would have been a gradation of risk from the people with very low ejection fractions up into the normal range, but here it didn’t seem to matter at all. So that’s an important point that bad outcomes were independent of ejection fraction,” commented Lee Goldberg, MD, professor of medicine and chief of advanced heart failure and cardiac transplant at the University of Pennsylvania, Philadelphia.

The study also validated that there is no association between use of RAAS inhibitors and bad outcomes in patients with COVID-19, he said.

Although this has been demonstrated in several studies, concerns were raised early in the pandemic that ACE inhibitors and angiotensin receptor blockers could facilitate infection with SARS-CoV-2 and increase the risk of severe or lethal COVID-19.  

“For most clinicians that question has been put to bed, but we’re still getting patients that will ask during office visits ‘Is it safe for me to stay on?’ They still have that doubt [about] ‘Are we doing the right thing?’ ” Dr. Goldberg said.

“We can reassure them now. A lot of us are able to say there’s nothing to that, we’re very clear about this, stay on the meds. If anything, there’s data that suggest actually it may be better to be on an ACE inhibitor; that the hospitalizations were shorter and the outcomes were a little bit better.”  

For the current study, published online Oct. 28 in the Journal of the American College of Cardiology, the investigators analyzed 6,439 patients admitted for COVID-19 at one of five Mount Sinai Health System hospitals in New York between Feb. 27 and June 26. Their mean age was 65.3 years, 45% were women, and one-third were treated with RAAS inhibitors before admission.

Using ICD-9/10 codes and individual chart review, HF was identified in 422 patients (6.6%), of which 250 patients had HFpEF (≥50%), 44 had HFmrEF (41%-49%), and 128 had HFrEF (≤40%).

Patients with HFpEF were older, more frequently women with a higher body mass index and history of lung disease than patients with HFrEF, whereas those with HFmrEF fell in between.

The HFpEF group was also treated with hydroxychloroquine or macrolides and noninvasive ventilation more frequently than the other two groups, whereas antiplatelet and neurohormonal therapies were more common in the HFrEF group.

Patients with a history of HF had significantly longer hospital stays than those without HF (8 days vs. 6 days), increased need for intubation (22.8% vs. 11.9%) and ICU care (23.2% vs. 16.6%), and worse in-hospital mortality (40% vs. 24.9%).

After multivariable regression adjustment, HF persisted as an independent risk factor for ICU care (odds ratio, 1.71; 95% CI, 1.25-2.34), intubation and mechanical ventilation (OR, 3.64; 95% CI, 2.56-5.16), and in-hospital mortality (OR, 1.88; 95% CI, 1.27-2.78).

“I knew to expect higher rates of adverse outcomes but I didn’t expect it to be nearly a twofold increase,” Dr. Lala said. “I thought that was pretty powerful.”

No significant differences were seen across LVEF categories in length of stay, need for ICU care, intubation and mechanical ventilation, acute kidney injury, shock, thromboembolic events, arrhythmias, or 30-day readmission rates.

However, cardiogenic shock (7.8% vs. 2.3% vs. 2%) and HF-related causes for 30-day readmissions (47.1% vs. 0% vs. 8.6%) were significantly higher in patients with HFrEF than in those with HFmrEF or HFpEF.

Also, mortality was lower in those with HFmrEF (22.7%) than with HFrEF (38.3%) and HFpEF (44%). The group was small but the “results suggested that patients with HFmrEF could have a better prognosis, because they can represent a distinct and more favorable HF phenotype,” the authors wrote.

The statistical testing didn’t show much difference and the patient numbers were very small, noted Dr. Goldberg. “So they might be overreaching a little bit there.”

“To me, the take-home message is that just having the phenotype of heart failure, regardless of EF, is associated with bad outcomes and we need to be vigilant on two fronts,” he said. “We really need to be doing prevention in the folks with heart failure because if they get COVID their outcomes are not going to be as good. Second, as clinicians, if we see a patient presenting with COVID who has a history of heart failure we may want to be much more vigilant with that individual than we might otherwise be. So I think there’s something to be said for kind of risk-stratifying people in that way.”

Dr. Goldberg pointed out that the study had many “amazing strengths,” including a large, racially diverse population, direct chart review to identify HF patients, and capturing a patient’s specific HF phenotype.  

Weaknesses are that it was a single-center study, so the biases of how these patients were treated are not easily controlled for, he said. “We also don’t know when the hospital system was very strained as they were making some decisions: Were the older patients who had advanced heart and lung disease ultimately less aggressively treated because they felt they wouldn’t survive?”

Dr. Lala has received personal fees from Zoll, outside the submitted work. Dr. Goldberg reported research funding with Respicardia and consulting fees from Abbott.

This article first appeared on Medscape.com.

People with a history of heart failure – no matter the type – face more complications and death than their peers without HF once hospitalized with COVID-19, a new observational study shows.

A history of HF was associated with a near doubling risk of in-hospital mortality and ICU care and more than a tripling risk of mechanical ventilation despite adjustment for 18 factors including race, obesity, diabetes, previous treatment with renin-angiotensin-aldosterone system (RAAS) inhibitors, and severity of illness.

Adverse outcomes were high regardless of whether patients had HF with a preserved, mid-range, or reduced left ventricular ejection fraction (HFpEF/HFmrEF/HFrEF).

“That for me was the real zinger,” senior author Anuradha Lala, MD, said in an interview . “Because as clinicians, oftentimes, and wrongly so, we think this person has preserved ejection fraction, so they’re not needing my heart failure expertise as much as someone with heart failure with reduced ejection fraction.”

In the peak of the pandemic, that may have meant triaging patients with HFpEF to a regular floor, whereas those with HFrEF were seen by the specialist team.

“What this alerted me to is to take heart failure as a diagnosis very seriously, regardless of ejection fraction, and that is very much in line with all of the emerging data about heart failure with preserved ejection fraction,” said Dr. Lala, from the Icahn School of Medicine at Mount Sinai, New York.

“Now when I see patients in the clinic, I incorporate part of our visit to talking about what they are doing to prevent COVID, which I really wasn’t doing before. It was like ‘Oh yeah, what crazy times we’re dealing with’ and then addressing their heart failure as I normally would,” she said. “But now, interwoven into every visit is: Are you wearing a mask, what’s your social distancing policy, who are you living with at home, has anyone at home or who you’ve interacted with been sick? I’m asking those questions just as a knee-jerk reaction for these patients because I know the repercussions. We have to keep in mind these are observational studies, so I can’t prove causality but these are observations that are, nonetheless, quite robust.”

Although cardiovascular disease, including HF, is recognized as a risk factor for worse outcomes in COVID-19 patients, data are sparse on the clinical course and prognosis of patients with preexisting HF.

“I would have expected that there would have been a gradation of risk from the people with very low ejection fractions up into the normal range, but here it didn’t seem to matter at all. So that’s an important point that bad outcomes were independent of ejection fraction,” commented Lee Goldberg, MD, professor of medicine and chief of advanced heart failure and cardiac transplant at the University of Pennsylvania, Philadelphia.

The study also validated that there is no association between use of RAAS inhibitors and bad outcomes in patients with COVID-19, he said.

Although this has been demonstrated in several studies, concerns were raised early in the pandemic that ACE inhibitors and angiotensin receptor blockers could facilitate infection with SARS-CoV-2 and increase the risk of severe or lethal COVID-19.  

“For most clinicians that question has been put to bed, but we’re still getting patients that will ask during office visits ‘Is it safe for me to stay on?’ They still have that doubt [about] ‘Are we doing the right thing?’ ” Dr. Goldberg said.

“We can reassure them now. A lot of us are able to say there’s nothing to that, we’re very clear about this, stay on the meds. If anything, there’s data that suggest actually it may be better to be on an ACE inhibitor; that the hospitalizations were shorter and the outcomes were a little bit better.”  

For the current study, published online Oct. 28 in the Journal of the American College of Cardiology, the investigators analyzed 6,439 patients admitted for COVID-19 at one of five Mount Sinai Health System hospitals in New York between Feb. 27 and June 26. Their mean age was 65.3 years, 45% were women, and one-third were treated with RAAS inhibitors before admission.

Using ICD-9/10 codes and individual chart review, HF was identified in 422 patients (6.6%), of which 250 patients had HFpEF (≥50%), 44 had HFmrEF (41%-49%), and 128 had HFrEF (≤40%).

Patients with HFpEF were older, more frequently women with a higher body mass index and history of lung disease than patients with HFrEF, whereas those with HFmrEF fell in between.

The HFpEF group was also treated with hydroxychloroquine or macrolides and noninvasive ventilation more frequently than the other two groups, whereas antiplatelet and neurohormonal therapies were more common in the HFrEF group.

Patients with a history of HF had significantly longer hospital stays than those without HF (8 days vs. 6 days), increased need for intubation (22.8% vs. 11.9%) and ICU care (23.2% vs. 16.6%), and worse in-hospital mortality (40% vs. 24.9%).

After multivariable regression adjustment, HF persisted as an independent risk factor for ICU care (odds ratio, 1.71; 95% CI, 1.25-2.34), intubation and mechanical ventilation (OR, 3.64; 95% CI, 2.56-5.16), and in-hospital mortality (OR, 1.88; 95% CI, 1.27-2.78).

“I knew to expect higher rates of adverse outcomes but I didn’t expect it to be nearly a twofold increase,” Dr. Lala said. “I thought that was pretty powerful.”

No significant differences were seen across LVEF categories in length of stay, need for ICU care, intubation and mechanical ventilation, acute kidney injury, shock, thromboembolic events, arrhythmias, or 30-day readmission rates.

However, cardiogenic shock (7.8% vs. 2.3% vs. 2%) and HF-related causes for 30-day readmissions (47.1% vs. 0% vs. 8.6%) were significantly higher in patients with HFrEF than in those with HFmrEF or HFpEF.

Also, mortality was lower in those with HFmrEF (22.7%) than with HFrEF (38.3%) and HFpEF (44%). The group was small but the “results suggested that patients with HFmrEF could have a better prognosis, because they can represent a distinct and more favorable HF phenotype,” the authors wrote.

The statistical testing didn’t show much difference and the patient numbers were very small, noted Dr. Goldberg. “So they might be overreaching a little bit there.”

“To me, the take-home message is that just having the phenotype of heart failure, regardless of EF, is associated with bad outcomes and we need to be vigilant on two fronts,” he said. “We really need to be doing prevention in the folks with heart failure because if they get COVID their outcomes are not going to be as good. Second, as clinicians, if we see a patient presenting with COVID who has a history of heart failure we may want to be much more vigilant with that individual than we might otherwise be. So I think there’s something to be said for kind of risk-stratifying people in that way.”

Dr. Goldberg pointed out that the study had many “amazing strengths,” including a large, racially diverse population, direct chart review to identify HF patients, and capturing a patient’s specific HF phenotype.  

Weaknesses are that it was a single-center study, so the biases of how these patients were treated are not easily controlled for, he said. “We also don’t know when the hospital system was very strained as they were making some decisions: Were the older patients who had advanced heart and lung disease ultimately less aggressively treated because they felt they wouldn’t survive?”

Dr. Lala has received personal fees from Zoll, outside the submitted work. Dr. Goldberg reported research funding with Respicardia and consulting fees from Abbott.

This article first appeared on Medscape.com.

Within minutes of her arrival at Community North Hospital in Indianapolis, Ramya Yeleti’s vital signs plummeted; her pulse was at 45 beats per minute and her ejection fraction was hovering near 10%. “I definitely thought there was a chance I would close my eyes and never open them again, but I only had a few seconds to process that,” she recalled. Then everything went black. Ramya fell unconscious as shock pads were positioned and a swarm of clinicians prepared to insert an Impella heart pump through a catheter into her aorta.

The third-year medical student and aspiring psychiatrist had been doing in-person neurology rotations in July when she began to experience fever and uncontrolled vomiting. Her initial thought was that she must have caught the flu from a patient.

After all, Ramya, along with her father Ram Yeleti, MD, mother Indira, and twin sister Divya, had all weathered COVID-19 in previous months and later tested positive for SARS-CoV-2 antibodies. The only family member who had been spared was her younger brother Rohith.

Indira suffered a severe case, requiring ICU care for 2 days but no ventilator; the others experienced mostly mild symptoms. Ramya — who was studying for her third-year board exams after classes at Marian University College of Osteopathic Medicine in Indianapolis went virtual in March — was left with lingering fatigue; however, her cough and muscle aches abated and her sense of taste and smell returned. When she started rotations, she thought her life was getting back to normal.

Ramya’s flu symptoms did not improve. A university-mandated rapid COVID test came back negative, but 2 more days of vomiting started to worry both her and her father, who is a cardiologist and chief physician executive at Community Health Network in Indianapolis. After Ramya felt some chest pain, she asked her father to listen to her heart. All sounded normal, and Ram prescribed ondansetron for her nausea.

But the antiemetic didn’t work, and by the next morning both father and daughter were convinced that they needed to head to the emergency department.

“I wanted to double-check if I was missing something about her being dehydrated,” Ram told Medscape Medical News. “Several things can cause protracted nausea, like hepatitis, appendicitis, or another infection. I feel terribly guilty I didn’t realize she had a heart condition.”
 

A surprising turn for the worst

Ramya’s subtle symptoms quickly gave way to the dramatic cardiac crisis that unfolded just after her arrival at Community North. “Her EKG looked absolutely horrendous, like a 75-year-old having a heart attack,” Ram said.

As a cardiologist, he knew his daughter’s situation was growing dire when he heard physicians shouting that the Impella wasn’t working and she needed extracorporeal membrane oxygenation (ECMO).

“At that point, I didn’t think she’d survive,” her father recalled. “We had 10 physicians in the room who worked on her for 5 hours to get her stabilized.”

“It was especially traumatic because, obviously, I knew exactly what was happening,” he added. “You can’t sugarcoat anything.”

After being connected to the heart–lung equipment, Ramya was transferred to IU Health Methodist Hospital, also in Indianapolis, where she was tested again for COVID-19. Unlike the rapid test administered just days earlier, the PCR assay came back positive.

“I knew she had acute myocarditis, but coronavirus never crossed my mind,” said Ram.

“As we were dealing with her heart, we were also dealing with this challenge: she was coming back positive for COVID-19 again,” said Roopa Rao, MD, the heart failure transplant cardiologist at IU Health who treated Ramya.

“We weren’t sure whether we were dealing with an active infection or dead virus” from her previous infection, Rao said, “so we started treating her like she had active COVID-19 and gave her remdesivir, convalescent plasma, and steroids, which was the protocol in our hospital.”

A biopsy of Ramya’s heart tissue, along with blood tests, indicated a past parvovirus infection. It’s possible that Ramya’s previous coronavirus infection made her susceptible to heart damage from a newer parvovirus infection, said Rao. Either virus, or both together, could have been responsible for the calamity.

Although it was unheard of during Ramya’s cardiac crisis in early August, evolving evidence now raises the possibility that she is one of a handful of people in the world to be reinfected with SARS-CoV-2. Also emerging are cases of COVID-related myocarditis and other extreme heart complications, particularly in young people.

“At the time, it wasn’t really clear if people could have another infection so quickly,” Rao told Medscape Medical News. “It is possible she is one of these rare individuals to have COVID-19 twice. I’m hoping at some point we will have some clarity.”

“I would favor a coinfection as probably the triggering factor for her sickness,” she said. “It may take some time, but like any other disease — and it doesn’t look like COVID will go away magically — I hope we’ll have some answers down the road.”
 

Another wrinkle

The next 48 hours brought astonishing news: Ramya’s heart function had rebounded to nearly normal, and her ejection fraction increased to about 45%. Heart transplantation wouldn’t be necessary, although Rao stood poised to follow through if ECMO only sustained, rather than improved, Ramya’s prognosis.

“Ramya was so sick that if she didn’t recover, the only option would be a heart transplant,” said Rao. “But we wanted to do everything to keep that heart.”

After steroid and COVID treatment, Ramya’s heart started to come back. “It didn’t make sense to me,” said Rao. “I don’t know what helped. If we hadn’t done ECMO, her heart probably wouldn’t have recovered, so I would say we have to support these patients and give them time for the heart to recover, even to the point of ECMO.”

Despite the good news, Ramya’s survival still hung in the balance. When she was disconnected from ECMO, clinicians discovered that the Impella device had caused a rare complication, damaging her mitral valve. The valve could be repaired surgically, but both Rao and Ram felt great trepidation at the prospect of cardiopulmonary bypass during the open-heart procedure.

“They would need to stop her heart and restart it, and I was concerned it would not restart,” Ram explained. “I didn’t like the idea of open-heart surgery, but my biggest fear was she was not going to survive it because of a really fresh, sick heart.”

The cardiologists’ fears did, in fact, come to pass: it took an hour to coax Ramya’s heart back at the end of surgery. But, just as the surgeon was preparing to reconnect Ramya to ECMO in desperation, “her heart recovered again,” Rao reported.

“Some things you never forget in life,” she said. “I can’t describe how everyone in the OR felt, all taking care of her. I told Ramya, ‘you are a fighter’.”
 

New strength

Six days would pass before Ramya woke up and learned of the astounding series of events that saved her. She knew “something was really wrong” because of the incision at the center of her chest, but learning she’d been on ECMO and the heart transplant list drove home how close to death she’d actually come.

“Most people don’t get off ECMO; they die on it,” she said. “And the chances of dying on the heart transplant list are very high. It was very strange to me that this was my story all of a sudden, when a week and a half earlier I was on rotation.”

Ongoing physical therapy over the past 3 months has transformed Ramya from a state of profound physical weakness to a place of relative strength. The now-fourth-year med student is turning 26 in November and is hungry to restart in-person rotations. Her downtime has been filled in part with researching myocarditis and collaborating with Rao on her own case study for journal publication.

But the mental trauma from her experience has girded her in ways she knows will make her stronger personally and professionally in the years ahead.

“It’s still very hard. I’m still recovering,” she acknowledged. “I described it to my therapist as an invisible wound on my brain.”

“When I came out of the hospital, I still had ECMO wounds, deep gashes on my legs that affected how fast and how long I could walk,” she said. “I felt like the same thing was going on my brain — a huge cut no one could see.”

Her intention to specialize in psychiatry has become more pressing now that Ramya has realized the impact of trauma on mental health.

“My body failing me was awful, but I could handle it,” she said. “Losing any part of my mind would have been way worse. I want to take care of that in my patients.”

This article first appeared on Medscape.com.

Within minutes of her arrival at Community North Hospital in Indianapolis, Ramya Yeleti’s vital signs plummeted; her pulse was at 45 beats per minute and her ejection fraction was hovering near 10%. “I definitely thought there was a chance I would close my eyes and never open them again, but I only had a few seconds to process that,” she recalled. Then everything went black. Ramya fell unconscious as shock pads were positioned and a swarm of clinicians prepared to insert an Impella heart pump through a catheter into her aorta.

The third-year medical student and aspiring psychiatrist had been doing in-person neurology rotations in July when she began to experience fever and uncontrolled vomiting. Her initial thought was that she must have caught the flu from a patient.

After all, Ramya, along with her father Ram Yeleti, MD, mother Indira, and twin sister Divya, had all weathered COVID-19 in previous months and later tested positive for SARS-CoV-2 antibodies. The only family member who had been spared was her younger brother Rohith.

Indira suffered a severe case, requiring ICU care for 2 days but no ventilator; the others experienced mostly mild symptoms. Ramya — who was studying for her third-year board exams after classes at Marian University College of Osteopathic Medicine in Indianapolis went virtual in March — was left with lingering fatigue; however, her cough and muscle aches abated and her sense of taste and smell returned. When she started rotations, she thought her life was getting back to normal.

Ramya’s flu symptoms did not improve. A university-mandated rapid COVID test came back negative, but 2 more days of vomiting started to worry both her and her father, who is a cardiologist and chief physician executive at Community Health Network in Indianapolis. After Ramya felt some chest pain, she asked her father to listen to her heart. All sounded normal, and Ram prescribed ondansetron for her nausea.

But the antiemetic didn’t work, and by the next morning both father and daughter were convinced that they needed to head to the emergency department.

“I wanted to double-check if I was missing something about her being dehydrated,” Ram told Medscape Medical News. “Several things can cause protracted nausea, like hepatitis, appendicitis, or another infection. I feel terribly guilty I didn’t realize she had a heart condition.”
 

A surprising turn for the worst

Ramya’s subtle symptoms quickly gave way to the dramatic cardiac crisis that unfolded just after her arrival at Community North. “Her EKG looked absolutely horrendous, like a 75-year-old having a heart attack,” Ram said.

As a cardiologist, he knew his daughter’s situation was growing dire when he heard physicians shouting that the Impella wasn’t working and she needed extracorporeal membrane oxygenation (ECMO).

“At that point, I didn’t think she’d survive,” her father recalled. “We had 10 physicians in the room who worked on her for 5 hours to get her stabilized.”

“It was especially traumatic because, obviously, I knew exactly what was happening,” he added. “You can’t sugarcoat anything.”

After being connected to the heart–lung equipment, Ramya was transferred to IU Health Methodist Hospital, also in Indianapolis, where she was tested again for COVID-19. Unlike the rapid test administered just days earlier, the PCR assay came back positive.

“I knew she had acute myocarditis, but coronavirus never crossed my mind,” said Ram.

“As we were dealing with her heart, we were also dealing with this challenge: she was coming back positive for COVID-19 again,” said Roopa Rao, MD, the heart failure transplant cardiologist at IU Health who treated Ramya.

“We weren’t sure whether we were dealing with an active infection or dead virus” from her previous infection, Rao said, “so we started treating her like she had active COVID-19 and gave her remdesivir, convalescent plasma, and steroids, which was the protocol in our hospital.”

A biopsy of Ramya’s heart tissue, along with blood tests, indicated a past parvovirus infection. It’s possible that Ramya’s previous coronavirus infection made her susceptible to heart damage from a newer parvovirus infection, said Rao. Either virus, or both together, could have been responsible for the calamity.

Although it was unheard of during Ramya’s cardiac crisis in early August, evolving evidence now raises the possibility that she is one of a handful of people in the world to be reinfected with SARS-CoV-2. Also emerging are cases of COVID-related myocarditis and other extreme heart complications, particularly in young people.

“At the time, it wasn’t really clear if people could have another infection so quickly,” Rao told Medscape Medical News. “It is possible she is one of these rare individuals to have COVID-19 twice. I’m hoping at some point we will have some clarity.”

“I would favor a coinfection as probably the triggering factor for her sickness,” she said. “It may take some time, but like any other disease — and it doesn’t look like COVID will go away magically — I hope we’ll have some answers down the road.”
 

Another wrinkle

The next 48 hours brought astonishing news: Ramya’s heart function had rebounded to nearly normal, and her ejection fraction increased to about 45%. Heart transplantation wouldn’t be necessary, although Rao stood poised to follow through if ECMO only sustained, rather than improved, Ramya’s prognosis.

“Ramya was so sick that if she didn’t recover, the only option would be a heart transplant,” said Rao. “But we wanted to do everything to keep that heart.”

After steroid and COVID treatment, Ramya’s heart started to come back. “It didn’t make sense to me,” said Rao. “I don’t know what helped. If we hadn’t done ECMO, her heart probably wouldn’t have recovered, so I would say we have to support these patients and give them time for the heart to recover, even to the point of ECMO.”

Despite the good news, Ramya’s survival still hung in the balance. When she was disconnected from ECMO, clinicians discovered that the Impella device had caused a rare complication, damaging her mitral valve. The valve could be repaired surgically, but both Rao and Ram felt great trepidation at the prospect of cardiopulmonary bypass during the open-heart procedure.

“They would need to stop her heart and restart it, and I was concerned it would not restart,” Ram explained. “I didn’t like the idea of open-heart surgery, but my biggest fear was she was not going to survive it because of a really fresh, sick heart.”

The cardiologists’ fears did, in fact, come to pass: it took an hour to coax Ramya’s heart back at the end of surgery. But, just as the surgeon was preparing to reconnect Ramya to ECMO in desperation, “her heart recovered again,” Rao reported.

“Some things you never forget in life,” she said. “I can’t describe how everyone in the OR felt, all taking care of her. I told Ramya, ‘you are a fighter’.”
 

New strength

Six days would pass before Ramya woke up and learned of the astounding series of events that saved her. She knew “something was really wrong” because of the incision at the center of her chest, but learning she’d been on ECMO and the heart transplant list drove home how close to death she’d actually come.

“Most people don’t get off ECMO; they die on it,” she said. “And the chances of dying on the heart transplant list are very high. It was very strange to me that this was my story all of a sudden, when a week and a half earlier I was on rotation.”

Ongoing physical therapy over the past 3 months has transformed Ramya from a state of profound physical weakness to a place of relative strength. The now-fourth-year med student is turning 26 in November and is hungry to restart in-person rotations. Her downtime has been filled in part with researching myocarditis and collaborating with Rao on her own case study for journal publication.

But the mental trauma from her experience has girded her in ways she knows will make her stronger personally and professionally in the years ahead.

“It’s still very hard. I’m still recovering,” she acknowledged. “I described it to my therapist as an invisible wound on my brain.”

“When I came out of the hospital, I still had ECMO wounds, deep gashes on my legs that affected how fast and how long I could walk,” she said. “I felt like the same thing was going on my brain — a huge cut no one could see.”

Her intention to specialize in psychiatry has become more pressing now that Ramya has realized the impact of trauma on mental health.

“My body failing me was awful, but I could handle it,” she said. “Losing any part of my mind would have been way worse. I want to take care of that in my patients.”

This article first appeared on Medscape.com.

Within minutes of her arrival at Community North Hospital in Indianapolis, Ramya Yeleti’s vital signs plummeted; her pulse was at 45 beats per minute and her ejection fraction was hovering near 10%. “I definitely thought there was a chance I would close my eyes and never open them again, but I only had a few seconds to process that,” she recalled. Then everything went black. Ramya fell unconscious as shock pads were positioned and a swarm of clinicians prepared to insert an Impella heart pump through a catheter into her aorta.

The third-year medical student and aspiring psychiatrist had been doing in-person neurology rotations in July when she began to experience fever and uncontrolled vomiting. Her initial thought was that she must have caught the flu from a patient.

After all, Ramya, along with her father Ram Yeleti, MD, mother Indira, and twin sister Divya, had all weathered COVID-19 in previous months and later tested positive for SARS-CoV-2 antibodies. The only family member who had been spared was her younger brother Rohith.

Indira suffered a severe case, requiring ICU care for 2 days but no ventilator; the others experienced mostly mild symptoms. Ramya — who was studying for her third-year board exams after classes at Marian University College of Osteopathic Medicine in Indianapolis went virtual in March — was left with lingering fatigue; however, her cough and muscle aches abated and her sense of taste and smell returned. When she started rotations, she thought her life was getting back to normal.

Ramya’s flu symptoms did not improve. A university-mandated rapid COVID test came back negative, but 2 more days of vomiting started to worry both her and her father, who is a cardiologist and chief physician executive at Community Health Network in Indianapolis. After Ramya felt some chest pain, she asked her father to listen to her heart. All sounded normal, and Ram prescribed ondansetron for her nausea.

But the antiemetic didn’t work, and by the next morning both father and daughter were convinced that they needed to head to the emergency department.

“I wanted to double-check if I was missing something about her being dehydrated,” Ram told Medscape Medical News. “Several things can cause protracted nausea, like hepatitis, appendicitis, or another infection. I feel terribly guilty I didn’t realize she had a heart condition.”
 

A surprising turn for the worst

Ramya’s subtle symptoms quickly gave way to the dramatic cardiac crisis that unfolded just after her arrival at Community North. “Her EKG looked absolutely horrendous, like a 75-year-old having a heart attack,” Ram said.

As a cardiologist, he knew his daughter’s situation was growing dire when he heard physicians shouting that the Impella wasn’t working and she needed extracorporeal membrane oxygenation (ECMO).

“At that point, I didn’t think she’d survive,” her father recalled. “We had 10 physicians in the room who worked on her for 5 hours to get her stabilized.”

“It was especially traumatic because, obviously, I knew exactly what was happening,” he added. “You can’t sugarcoat anything.”

After being connected to the heart–lung equipment, Ramya was transferred to IU Health Methodist Hospital, also in Indianapolis, where she was tested again for COVID-19. Unlike the rapid test administered just days earlier, the PCR assay came back positive.

“I knew she had acute myocarditis, but coronavirus never crossed my mind,” said Ram.

“As we were dealing with her heart, we were also dealing with this challenge: she was coming back positive for COVID-19 again,” said Roopa Rao, MD, the heart failure transplant cardiologist at IU Health who treated Ramya.

“We weren’t sure whether we were dealing with an active infection or dead virus” from her previous infection, Rao said, “so we started treating her like she had active COVID-19 and gave her remdesivir, convalescent plasma, and steroids, which was the protocol in our hospital.”

A biopsy of Ramya’s heart tissue, along with blood tests, indicated a past parvovirus infection. It’s possible that Ramya’s previous coronavirus infection made her susceptible to heart damage from a newer parvovirus infection, said Rao. Either virus, or both together, could have been responsible for the calamity.

Although it was unheard of during Ramya’s cardiac crisis in early August, evolving evidence now raises the possibility that she is one of a handful of people in the world to be reinfected with SARS-CoV-2. Also emerging are cases of COVID-related myocarditis and other extreme heart complications, particularly in young people.

“At the time, it wasn’t really clear if people could have another infection so quickly,” Rao told Medscape Medical News. “It is possible she is one of these rare individuals to have COVID-19 twice. I’m hoping at some point we will have some clarity.”

“I would favor a coinfection as probably the triggering factor for her sickness,” she said. “It may take some time, but like any other disease — and it doesn’t look like COVID will go away magically — I hope we’ll have some answers down the road.”
 

Another wrinkle

The next 48 hours brought astonishing news: Ramya’s heart function had rebounded to nearly normal, and her ejection fraction increased to about 45%. Heart transplantation wouldn’t be necessary, although Rao stood poised to follow through if ECMO only sustained, rather than improved, Ramya’s prognosis.

“Ramya was so sick that if she didn’t recover, the only option would be a heart transplant,” said Rao. “But we wanted to do everything to keep that heart.”

After steroid and COVID treatment, Ramya’s heart started to come back. “It didn’t make sense to me,” said Rao. “I don’t know what helped. If we hadn’t done ECMO, her heart probably wouldn’t have recovered, so I would say we have to support these patients and give them time for the heart to recover, even to the point of ECMO.”

Despite the good news, Ramya’s survival still hung in the balance. When she was disconnected from ECMO, clinicians discovered that the Impella device had caused a rare complication, damaging her mitral valve. The valve could be repaired surgically, but both Rao and Ram felt great trepidation at the prospect of cardiopulmonary bypass during the open-heart procedure.

“They would need to stop her heart and restart it, and I was concerned it would not restart,” Ram explained. “I didn’t like the idea of open-heart surgery, but my biggest fear was she was not going to survive it because of a really fresh, sick heart.”

The cardiologists’ fears did, in fact, come to pass: it took an hour to coax Ramya’s heart back at the end of surgery. But, just as the surgeon was preparing to reconnect Ramya to ECMO in desperation, “her heart recovered again,” Rao reported.

“Some things you never forget in life,” she said. “I can’t describe how everyone in the OR felt, all taking care of her. I told Ramya, ‘you are a fighter’.”
 

New strength

Six days would pass before Ramya woke up and learned of the astounding series of events that saved her. She knew “something was really wrong” because of the incision at the center of her chest, but learning she’d been on ECMO and the heart transplant list drove home how close to death she’d actually come.

“Most people don’t get off ECMO; they die on it,” she said. “And the chances of dying on the heart transplant list are very high. It was very strange to me that this was my story all of a sudden, when a week and a half earlier I was on rotation.”

Ongoing physical therapy over the past 3 months has transformed Ramya from a state of profound physical weakness to a place of relative strength. The now-fourth-year med student is turning 26 in November and is hungry to restart in-person rotations. Her downtime has been filled in part with researching myocarditis and collaborating with Rao on her own case study for journal publication.

But the mental trauma from her experience has girded her in ways she knows will make her stronger personally and professionally in the years ahead.

“It’s still very hard. I’m still recovering,” she acknowledged. “I described it to my therapist as an invisible wound on my brain.”

“When I came out of the hospital, I still had ECMO wounds, deep gashes on my legs that affected how fast and how long I could walk,” she said. “I felt like the same thing was going on my brain — a huge cut no one could see.”

Her intention to specialize in psychiatry has become more pressing now that Ramya has realized the impact of trauma on mental health.

“My body failing me was awful, but I could handle it,” she said. “Losing any part of my mind would have been way worse. I want to take care of that in my patients.”

This article first appeared on Medscape.com.