Abstract
Background and Aims: Caudal block is more frequently used in children for postoperative analgesia. However, its disadvantage is its short duration. Erector spinae plane block (ESPB) at the sacral level can potentially block the pudendal nerve. It may prove an alternative to caudal block for hypospadias repair regarding time to first rescue analgesia. Methods: Fifty children of 2–7 years of age were included. After induction of general anaesthesia, Group I (n = 25) was given ultrasound-guided sacral ESPB with 1 ml/kg of 0.25% bupivacaine and Group II (n = 25) was given caudal block with 0.5 ml/kg of 0.25% bupivacaine. Postoperatively at face, leg, activity, cry, consolability (FLACC) score ≥4, rescue analgesia was given using intravenous 15 mg/kg paracetamol. The primary outcome was to compare time to first rescue analgesia, and secondary outcomes were intraoperative haemodynamic parameters, fentanyl consumption, postoperative FLACC score and analgesic consumption in 24 h. Continuous variables were compared using the independent sample t-test or Mann–Whitney test, and categorical variables were compared using the Chi-square test. Results: The mean time to first rescue analgesia was 21.30 (standard deviation [SD]: 3.06) h in Group I and 9.36 (SD: 1.71) h in Group II (P < 0.001) (mean difference −11.94 [95% CI: −13.39, −10.48]). The FLACC score was significantly higher (P < 0.05) postoperatively at 8, 10, 12 and 18 h in Group II. Mean postoperative analgesic consumption was 310.5 (SD: 72.69) mg in Group I and 615.6 (SD: 137.51) mg in Group II (P < 0.001) (mean difference 30.5 [95% CI: 236.41, 373.78]). Conclusion: Sacral ESPB is better regarding time to first rescue analgesia than caudal block in paediatric patients undergoing hypospadias repair.
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