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TOPLINE:

High-frequency electric nerve block significantly reduced postamputation pain in a new study, presenting a potential new therapeutic option for amputees.

METHODOLOGY:

  • The study enrolled 180 patients with unilateral lower limb amputations who were experiencing severe post-procedure pain.
  • Participants were randomized 1:1 to receive 3 months of treatment with either a high-frequency nerve block (Altius; Neuros Medical) or an active sham.
  • Effectiveness was measured by the percentage of participants achieving at least a 50% reduction in pain in more than half of the treatment sessions.
  • The researchers attempted to control for variables including pain type and baseline pain intensity.

TAKEAWAY:

  • A total of 24.7% of patients in the group that received the nerve block were responders at 30 minutes post-treatment, significantly higher than 7.1% in the control group (P = .002).
  • The rate of response rose to 46.8% in the treatment group at 120 minutes, compared with 22.2% in the sham group (P = .001).
  • Patients who received the nerve block reported a greater improvement in their score on the Brief Pain Inventory than those in the sham arm — 2.3 ± 0.29 vs 1.3 ± 0.26, respectively (P = .01).
  • Use of opioids trended toward a greater reduction in the treatment group, although that finding was not statistically significant.

IN PRACTICE:

The results suggested “high-frequency electric nerve block could be a viable option for managing chronic post-amputation pain, potentially improving patients’ quality of life and reducing reliance on opioids,” the authors wrote. “The study addresses a critical gap in treatment options for amputees suffering from persistent pain, offering evidence for a novel therapeutic approach.”

“We have never seen a study of this magnitude and rigor in this patient population,” said lead author Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, in a press release about the data. “The data demonstrated clear and lasting benefit of treatment for pain reduction and functional outcomes at 3 months, creating great optimism for the long-term study results. These findings represent a significant advancement for an at-risk and underserved patient population in desperate need of reliable and effective treatment.”

SOURCE:

The study was led by Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, and was published online in the Journal of Pain Research.

LIMITATIONS:

The sample size of 180 participants may limit the generalizability of the findings to all amputees. A 3-month duration for assessing treatment efficacy may not capture long-term outcomes and effects. The active-sham control design, while rigorous, may not fully account for the placebo effects inherent in pain perception studies.

DISCLOSURES:

The QUEST study was funded by Neuros Medical Inc. Dr. Kapural reported personal fees from various medical companies, unrelated to this work. No other conflicts of interest were reported in this work.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

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TOPLINE:

High-frequency electric nerve block significantly reduced postamputation pain in a new study, presenting a potential new therapeutic option for amputees.

METHODOLOGY:

  • The study enrolled 180 patients with unilateral lower limb amputations who were experiencing severe post-procedure pain.
  • Participants were randomized 1:1 to receive 3 months of treatment with either a high-frequency nerve block (Altius; Neuros Medical) or an active sham.
  • Effectiveness was measured by the percentage of participants achieving at least a 50% reduction in pain in more than half of the treatment sessions.
  • The researchers attempted to control for variables including pain type and baseline pain intensity.

TAKEAWAY:

  • A total of 24.7% of patients in the group that received the nerve block were responders at 30 minutes post-treatment, significantly higher than 7.1% in the control group (P = .002).
  • The rate of response rose to 46.8% in the treatment group at 120 minutes, compared with 22.2% in the sham group (P = .001).
  • Patients who received the nerve block reported a greater improvement in their score on the Brief Pain Inventory than those in the sham arm — 2.3 ± 0.29 vs 1.3 ± 0.26, respectively (P = .01).
  • Use of opioids trended toward a greater reduction in the treatment group, although that finding was not statistically significant.

IN PRACTICE:

The results suggested “high-frequency electric nerve block could be a viable option for managing chronic post-amputation pain, potentially improving patients’ quality of life and reducing reliance on opioids,” the authors wrote. “The study addresses a critical gap in treatment options for amputees suffering from persistent pain, offering evidence for a novel therapeutic approach.”

“We have never seen a study of this magnitude and rigor in this patient population,” said lead author Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, in a press release about the data. “The data demonstrated clear and lasting benefit of treatment for pain reduction and functional outcomes at 3 months, creating great optimism for the long-term study results. These findings represent a significant advancement for an at-risk and underserved patient population in desperate need of reliable and effective treatment.”

SOURCE:

The study was led by Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, and was published online in the Journal of Pain Research.

LIMITATIONS:

The sample size of 180 participants may limit the generalizability of the findings to all amputees. A 3-month duration for assessing treatment efficacy may not capture long-term outcomes and effects. The active-sham control design, while rigorous, may not fully account for the placebo effects inherent in pain perception studies.

DISCLOSURES:

The QUEST study was funded by Neuros Medical Inc. Dr. Kapural reported personal fees from various medical companies, unrelated to this work. No other conflicts of interest were reported in this work.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

 

TOPLINE:

High-frequency electric nerve block significantly reduced postamputation pain in a new study, presenting a potential new therapeutic option for amputees.

METHODOLOGY:

  • The study enrolled 180 patients with unilateral lower limb amputations who were experiencing severe post-procedure pain.
  • Participants were randomized 1:1 to receive 3 months of treatment with either a high-frequency nerve block (Altius; Neuros Medical) or an active sham.
  • Effectiveness was measured by the percentage of participants achieving at least a 50% reduction in pain in more than half of the treatment sessions.
  • The researchers attempted to control for variables including pain type and baseline pain intensity.

TAKEAWAY:

  • A total of 24.7% of patients in the group that received the nerve block were responders at 30 minutes post-treatment, significantly higher than 7.1% in the control group (P = .002).
  • The rate of response rose to 46.8% in the treatment group at 120 minutes, compared with 22.2% in the sham group (P = .001).
  • Patients who received the nerve block reported a greater improvement in their score on the Brief Pain Inventory than those in the sham arm — 2.3 ± 0.29 vs 1.3 ± 0.26, respectively (P = .01).
  • Use of opioids trended toward a greater reduction in the treatment group, although that finding was not statistically significant.

IN PRACTICE:

The results suggested “high-frequency electric nerve block could be a viable option for managing chronic post-amputation pain, potentially improving patients’ quality of life and reducing reliance on opioids,” the authors wrote. “The study addresses a critical gap in treatment options for amputees suffering from persistent pain, offering evidence for a novel therapeutic approach.”

“We have never seen a study of this magnitude and rigor in this patient population,” said lead author Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, in a press release about the data. “The data demonstrated clear and lasting benefit of treatment for pain reduction and functional outcomes at 3 months, creating great optimism for the long-term study results. These findings represent a significant advancement for an at-risk and underserved patient population in desperate need of reliable and effective treatment.”

SOURCE:

The study was led by Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, and was published online in the Journal of Pain Research.

LIMITATIONS:

The sample size of 180 participants may limit the generalizability of the findings to all amputees. A 3-month duration for assessing treatment efficacy may not capture long-term outcomes and effects. The active-sham control design, while rigorous, may not fully account for the placebo effects inherent in pain perception studies.

DISCLOSURES:

The QUEST study was funded by Neuros Medical Inc. Dr. Kapural reported personal fees from various medical companies, unrelated to this work. No other conflicts of interest were reported in this work.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article appeared on Medscape.com.

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