Abstract
To compare the postoperative analgesic efficacy and postoperative complications of the pudendal nerve block (PNB) and caudal block (CB) with ultrasound (US). A prospective observational study. This study was included male patients aged between 4 and 12years 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. The 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). This 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.
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