Pregabalin for the treatment of abdominal adhesion pain: a randomized, double-blind, placebo-controlled trial

Am J Ther. 2012 Nov;19(6):419-28. doi: 10.1097/MJT.0b013e318217a5f5.

Abstract

Chronic pain related to postoperative abdominal adhesions is a common problem with no standard analgesic regimen currently established. In a double-blind, placebo-controlled trial, we examined the effects of pregabalin on pain modulation in patients with prior abdominal surgery and documented adhesion. The primary outcome measure was pain relief documented by a 2-point change on the Likert pain scale with a secondary pain measure of sleep interruption. A total of 18 women were randomized to receive either the drug (n = 11) or placebo (n = 7). Thirteen patients (eight pregabalin, five placebo) completed the blinded phase and 10 patients (seven pregabalin, three placebo) completed the open-label phase. Statistical analysis was performed in two settings: 1) Week 0 (as the baseline) through the end of Week 7 of the blinded fixed-dose phase; and 2) Week 7 (as the baseline) along With weeks 8 through 11 of the open-label phase. The pain score result from the blinded phase setting indicated that the amount of decrease was significantly greater in the drug group (P = 0.024), whereas the pain score result from the open-label setting indicated that the amount of decrease was significantly greater in the placebo group (P = 0.043). Only the sleep score result in the open-label setting was significantly greater in the placebo group (P = 0.024). We conclude that pregabalin significantly reduced patient-documented pain scores compared with placebo in our small cohort of patients with abdominal adhesion pain.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abdomen / pathology
  • Abdomen / surgery
  • Abdominal Pain / drug therapy*
  • Abdominal Pain / etiology
  • Adult
  • Analgesics / therapeutic use*
  • Chronic Pain / drug therapy*
  • Chronic Pain / etiology
  • Double-Blind Method
  • Female
  • Humans
  • Middle Aged
  • Pain Measurement
  • Postoperative Complications / pathology
  • Pregabalin
  • Sleep Wake Disorders / etiology
  • Tissue Adhesions / pathology
  • Treatment Outcome
  • gamma-Aminobutyric Acid / analogs & derivatives*
  • gamma-Aminobutyric Acid / therapeutic use

Substances

  • Analgesics
  • Pregabalin
  • gamma-Aminobutyric Acid