A comparison of lignocaine 2% with adrenaline 1:200,000 and lignocaine 2% with adrenaline 1:200,000 plus fentanyl as agents for caudal anaesthesia in children undergoing circumcision.

This randomised double-blind study compares the onset, quality and duration of analgesia in two groups of children (n = 30), aged between two and twelve years undergoing circumcision. Under concurrent general anaesthesia, the children received caudal anaesthesia employing either lignocaine 2% with adrenaline 1:200,000 plus normal saline 0.01 ml/kg, or lignocaine 2% with adrenaline 1:200,000 plus fentanyl 1.0 microgram/kg. The results show no statistical or clinical difference in the onset, duration, quality of pain relief, or side-effects between the two solutions.