Abstract
OBJECTIVE: To evaluate the analgesic efficacy and safety of local anesthetic infiltration in the tonsillar fossa using ropivacaine compared to bupivacaine in pediatric patients undergoing tonsillectomy. DATA SOURCES: CENTRAL, PubMed, Web of Science, Scopus, and Google Scholar. REVIEW METHODS: Eligible randomized controlled trials (RCTs) were evaluated for risk of bias using Cochrane's Risk of Bias Tool (RoB-2). The primary outcome was postoperative pain within the first 24 hours following tonsillectomy. Secondary outcomes included the time to first analgesic requirement and complication rates (ie, bleeding, airway obstruction, local anesthetic toxicity, and nausea). Data were synthesized using the standardized mean difference (SMD) for continuous outcomes and risk ratio (RR) for dichotomous outcomes, both reported with 95% confidence intervals (CI). RESULTS: Seven RCTs with a total of 375 patients were analyzed. Regarding posttonsillectomy pain scores, there was no significant difference between ropivacaine and bupivacaine at 1 hour (SMD = -0.01, 95% confidence interval [CI] [-0.36, 0.34]), 2 hours (SMD = 0.03, 95% CI [-0.45, 0.51]), 4 hours (SMD = -0.17, 95% CI [-0.39, 0.06]), 6-8 hours (SMD = 0.04, 95% CI [-0.38, 0.46]), and 12 hours (SMD = -0.23, 95% CI [-0.62, 0.15]). However, at 24 hours, ropivacaine demonstrated a superior effect compared to bupivacaine (SMD = -0.23, 95% CI [-0.43, -0.03]). There was no significant difference between ropivacaine and bupivacaine in terms of time to first analgesia and complication rates (P > .05). CONCLUSION: This meta-analysis demonstrated that ropivacaine and bupivacaine offer comparable clinical analgesic efficacy and safety profiles in pediatric patients undergoing tonsillectomy.