Abstract
To evaluate the efficacy of ultrasound-guided ilioinguinal and iliohypogastric nerve block (IIHB) in children undergoingsurgery for inguinal hernias. PubMed, Embase, Cochrane Library, and Web of Sciencedatabases were searched to January 4, 2024. For continuous data, the effect sizes were presented as weighted mean differences(WMDs), and for categorical data, they were reported as relative ratios (RR), each accompanied by 95% confidence intervals(CIs). IIHB demonstrated a longer duration before the need for the first analgesic compared to transverse abdominisplane (TAP), caudal epidural block (CEB), and pre-incisional wound infiltration (PWI), but a shorter duration than quadratuslumborum block (QLB). The IIHB group had a higher probability of requiring rescue analgesics compared to other blocks orPWI (RR: 1.69, 95% CI: 1.25 to 2.28, p=0.001). Higher FLACC scores were noted at 12 hours for the IIHB group (WMD:0.50, 95% CI: 0.13 to 0.86, p=0.008). IIHB required more intraoperative fentanyl compared to controls (RR: 2.14, 95% CI:1.17 to 3.92, p=0.014). While IIHB may have some benefits, it does not appear to be more effective overall inmanaging postoperative pain in pediatric inguinal hernia surgery patients compared to other blocks or PWI.
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