• Volkan Ozen.
• Department of Anesthesiology and Reanimation, Prof. Dr. Cemil Tascioglu City Hospital, Istanbul, Turkey.
• Int. J. Clin. Pract. 2021 Oct 1; 75 (10): e14366.

AimTo compare the postoperative analgesic efficacy and postoperative complications of the pudendal nerve block (PNB) and caudal block (CB) with ultrasound (US).Study DesignA prospective observational study.MethodsThis study was included male patients aged between 4 and 12 years in the ASA I-II group and scheduled for circumcision. A low-dose CB or US-guided PNB was administered under general anaesthesia before the operation. Postoperative pain was evaluated using the Children's Hospital Eastern Ontario Pain Scale (CHEOPS) and Faces Pain Scale-Revised. Postoperative analgesic need was also noted.ResultsThe study was completed with a total of 100 patients consisting of 50 patients who received a CB and 50 who received a PNB. Intraoperative block failure was not seen in any patient. The mean CHEOPS score (P < .001) and the 6th (P = .003) and 12th hours (P < .001) CHEOPS scores were found to be statistically significantly higher in the CB group. There were no postoperative side effects in the PNB group with a statistically significant difference compared with the CB group (P = .027).ConclusionThis first prospective study in the literature shows that US-guided PNB provided a more pronounced and longer analgesic effect and resulted in less requirement for postoperative analgesics than US-guided CB.© 2021 John Wiley & Sons Ltd.

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