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Canadian Journal of Anesthesia, Vol 44, 1144-1147, Copyright © 1997 by Canadian Anesthesiologists' Society

ARTICLES

Comparison of rocuronium and d-tubocurarine for prevention of succinylcholine-induced fasciculations and myalgia

J Demers-Pelletier, P Drolet, M Girard and F Donati
Department of Anaesthesia, University of Montreal, Maisonneuve-Rosemont Hospital, Quebec, Canada.

PURPOSE: We compared d-tubocurarine and rocuronium for the prevention of succinylcholine-induced fasciculations and postoperative myalgia (POM) and evaluated the influence of both drugs on the speed of onset and recovery of succinylcholine. METHODS: Seventy-five women undergoing surgery of short duration were studied. They were randomized to one of three groups: group SAL received normal saline followed three minutes later by 1.0 mg.kg-1 succinylcholine; group ROC received 0.05 mg.kg-1 rocuronium + 1.5 mg.kg-1 succinylcholine; group DTC received 0.05 mg.kg-1 d-tubocurarine + 1.5 mg.kg-1 succinylcholine. Single-twitch stimulation was applied to the ulnar nerve every 10 sec and the EMG response of the adductor pollicis was recorded. Fasciculations were assessed by a blinded observer on a scale of 0-3. Patients were asked 24 and 48 hr later to rate POM using a scale of 0-10. RESULTS: The interval needed for twitch height to decrease to 10% of initial value after succinylcholine was longer in group ROC (58 +/- 20 sec) (mean +/- SD) compared with group SAL (44 +/- 13 sec) (P < 0.05). Recovery to 20% occurred faster in group ROC (324 +/- 83 sec) than in groups SAL (456 +/- 103 sec) and DTC (450 +/-132 sec) (P < 0.05). Fasciculations were more intense in groups SAL than in groups ROC and DTC (P n 0.001). Patients rated POM as less intense 24hr postoperatively only in group ROC (1.2 +/- 2.4) compared with group SAL (3.3 +/- 3.5) (P < 0.05). CONCLUSION: Rocuronium prevents succinylcholine-induced fasciculations and POM. Rocuronium also delays the onset of succinylcholine and shortens its duration compared with d-tubocurarine.


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Copyright © 1997 by the Canadian Anesthesiologists' Society.