Caudal block for postoperative analgesia in children.

A clinical trial was performed to compare the effects of intramuscular dihydrocodeine with caudal bupivacaine on postoperative pain and recovery in 181 children who had undergone either circumcision, inguinal herniotomy or orchidopexy performed under general anaesthesia. Linear analogues were used in assess level of consciousness and apparent pain. Recovery of consciousness was slower after caudal analgesia. For 90 minutes following circumcision there was significantly less pain and caudal analgesia, but better pain relief could not be demonstrated following inguinal herniotomy and orchidopexy.