British Journal of Anaesthesia, 2001, Vol. 86, No. 5 674-677
© 2001 The Board of Management and Trustees of the British Journal of Anaesthesia
Double-blind comparison of ropivacaine 7.5 mg ml1 with bupivacaine 5 mg ml1 for sciatic nerve block
Department of Anaesthesia, Ninewells Hospital and Medical School, Dundee DD1 9SY, UK*Corresponding author
Two groups of 12 patients had a sciatic nerve block performed with 20 ml of either ropivacaine 7.5 mg ml1 or bupivacaine 5 mg ml1. There was no statistically significant difference in the mean time to onset of complete anaesthesia of the foot or to first request for post-operative analgesia. The quality of the block was the same in each group. Although there was no statistically significant difference in the mean time to peak plasma concentrations the mean peak concentration of ropivacaine was significantly higher than that of bupivacaine. There were no signs of systemic local anaesthetic toxicity in any patient in either group.
Br J Anaesth 2001; 86: 6747
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