Perioperative Gabapentin and Opioid Requirements: A Randomized Controlled Trial

Area of Science:

• Anesthesiology and Pain Management
• Gynecologic Surgery
• Pharmacology

Background:

• Nonopioid analgesics are crucial for managing postoperative pain.
• Optimal analgesic regimens, particularly the role of gabapentin, require further investigation.
• Effective pain control strategies aim to minimize opioid reliance.

Purpose of the Study:

• To evaluate if preoperative gabapentin is noninferior to a regimen of preoperative and postoperative gabapentin for pain control after prolapse surgery.
• To assess the impact of gabapentin timing on opioid prescription rates post-surgery.
• To compare secondary outcomes including pain scores and opioid usage.

Main Methods:

• A randomized, double-blinded, placebo-controlled noninferiority trial was conducted.
• Participants undergoing prolapse repair received either preoperative gabapentin with postoperative placebo or preoperative and postoperative gabapentin.
• The primary outcome was the percentage of patients needing an opioid prescription at discharge.

Main Results:

• No significant difference was observed in opioid prescription rates at discharge between the groups (27.0% vs 32.0%).
• Opioid refill requests within six weeks postoperatively also did not differ significantly between the groups.
• The study did not meet its noninferiority margin for the primary outcome.

Conclusions:

• The study could not establish noninferiority of a placebo to postoperative gabapentin in reducing opioid prescriptions.
• The upper limit of the confidence interval exceeded the predefined noninferiority margin.
• Further investigation is warranted to optimize gabapentin use in postoperative pain management for prolapse surgery.