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Preoperative gabapentin for postoperative analgesia: a meta-analysis
1School of Undergraduate Medicine, McMaster University, Hamilton, Ontario L9H 2E8, Canada. rachaelseib@sympatico.ca
Summary
Preoperative gabapentin significantly reduced postoperative pain scores and opioid use within 24 hours. However, it did not decrease side effects, and larger trials are needed to confirm clinical significance.
Area of Science:
- Anesthesiology
- Pharmacology
Background:
- Gabapentin is established for chronic neuropathic pain.
- Its efficacy in acute postoperative pain management requires further clarification.
Purpose of the Study:
- To evaluate gabapentin's effectiveness in acute postoperative pain control.
- To determine if gabapentin reduces pain scores, analgesic consumption, and side effects in the first 24 hours post-surgery.
Main Methods:
- Meta-analysis of eight placebo-controlled, randomized controlled trials.
- Primary outcomes included pain scores, total analgesia consumption, and side effects over a 24-hour period.
Main Results:
- Preoperative gabapentin significantly lowered pain scores at rest and with movement.
- Patients receiving gabapentin showed reduced opioid consumption (-14.7 mg morphine in 24 hr).
- No significant difference in the incidence of side effects was observed.
Conclusions:
- Preoperative gabapentin decreases acute postoperative pain and analgesic needs within 24 hours.
- The clinical significance of these findings remains undetermined.
- Larger randomized controlled trials are recommended due to small study enrollments and lack of demonstrated side effect reduction.