Atracurium infusion in total intravenous anesthesia

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Abstract
The neuromuscular blocking effect of atracurium given as a bolus dose (0.5 mg.cntdot.kg-1) followed by a maintenance infusion was studied during two different anesthetic techniques. It has been reported that benzodiazepines interact with non-depolarising neuromuscular blockers. In this study no difference was found in the effect of atracurium given with conventional fentanyl/nitrous oxide anesthesia when compared to total intravenous anesthesia using midazolam/alfentanil. More than 90% twitch depression was achieved after 123 and 137 s, respectively. Recovery time to 10% twitch height following the bolus dose was around 32 min. The dosage range for atracurium given by infusion (0.29-0.44 mg.cntdot.kg-1.cntdot.h-1) was confirmed.