Brachial Plexus Blockage versus General Anesthesia for Upper Extremity Surgery: A Systematic Review and Meta-Analysis

This meta-analysis investigated differences in rebound pain and opioid consumption when using brachial plexus blockade (BPB) versus general anesthesia (GA) for upper limb surgery.

Four databases were searched. Odds ratios (OR), mean differences (MD), and standard mean differences (SMD) with 95% confidence intervals (CIs) were calculated. Outcomes included were pain, opioid consumption, adverse events, and discharge time. The risk of bias was assessed.

Nine clinical trials involving 487 patients were included. BPB resulted in significantly lower pain scores within 2 h postoperatively (MD -4.57, 95% CI -5.76 to 3.38; participants = 263; studies = 5; I2 = 0%; p < 0.00001) but not from 6 to 24 h. Opioid consumption (mg) was lower in the BPB group in the first 24 h (SMD -0.85, 95% CI -1.41 to -0.29; participants = 188; studies = 3; I2 = 67%; p < 0.003). BPB was associated with fewer postoperative nausea/vomiting events (OR 0.19, 95% CI 0.10-0.33; participants = 326; studies = 6; I2 = 45%; p < 0.00001) and shorter hospital stay (SMD -1.20, 95% CI -1.73 to -0.66; participants = 213; studies = 4; I2 = 69%; p < 0.0001). There was no difference in the number of patients not requiring opioids from 24 to 48 h.

BPB provided superior pain control at 2 h postoperatively and was associated with reduced opioid use, fewer adverse events, and shorter discharge time. No significant differences in pain scores were observed at 6-24 h or beyond 24 h, likely due to block wear-off. Despite this limitation, BPB still offered perioperative advantages over GA.