Abstract
We studied 40 children undergoing general surgical procedures. They were allocated randomly to receive induction of anaesthesia with propofol 3–5 mg kg-1 followed by maintenance with halo-thane and an appropriate regional block, or induction and maintenance of anaesthesia with a computerized, target-controlled infusion of propofol with a regional block. All patients breathed a mixture of 67% nitrous oxide in oxygen via a laryngeal mask airway. Both techniques provided adequate anaesthesia and operating conditions. There were no significant differences between the groups in heart rate, mean arterial pressure and end-expired carbon dioxide concentration during anaesthesia. There was no significant difference in the recovery times of the two groups. (Br. J. Anaesth. 1993; 70: 542–545)

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