British Journal of Anaesthesia, 2001, Vol. 86, No. 3 361-365
© 2001 The Board of Management and Trustees of the British Journal of Anaesthesia
Recovery from propofol anaesthesia supplemented with remifentanil
Department of Anaesthetics and Intensive Care Medicine, The Queens University of Belfast, Whitla Medical Building, 97 Lisburn Road, Belfast BT9 7BL, UK*Corresponding author
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We have examined the effects on recovery end-points of supplementation of a propofol-based anaesthetic with remifentanil. After induction of anaesthesia with propofol and remifentanil 1.0 µg kg1, 15 patients each were randomly allocated to target plasma propofol concentrations of 2, 3, 4 or 5 µg ml1 for maintenance of anaesthesia. Remifentanil was administered by infusion for supplementation in doses required for maintenance of adequate anaesthesia. All patients received 50% nitrous oxide in oxygen and ventilation was controlled. The total amount of drugs used and times to different recovery end-points were recorded. Cognitive function was also assessed using a Mini-Mental State questionnaire. The median dose of remifentanil for maintenance of adequate anaesthesia (excluding the initial bolus dose) in the four groups was 0.21, 0.15, 0.11 and 0.13 µg kg1 min1 respectively (P=0.0026). The median times to eye opening and orientation were shortest in the 2 µg ml1 group [6.0 and 6.5 min, 8.5 and 10.8 min, 13.4 and 15.8 min, and 14.2 and 19.5 min respectively in the propofol 2, 3, 4, and 5 µg ml1 groups respectively (P<0.001)]. The times to discharge from the recovery ward and the Mini-Mental State scores were not significantly different.
Br J Anaesth 2001; 86: 3615
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