British Journal of Anaesthesia, 1985, Vol. 57, No. 8 736-742
© 1985 The Board of Management and Trustees of the British Journal of Anaesthesia
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USE OF AN EMULSION OF ICI 35868 (PROPOFOL) FOR THE INDUCTION AND MAINTENANCE OF ANAESTHESIA

*Clinical Biochemistry, University of Oxford, Radcliffe Infirmary Oxford OX2 6HE.
Address for correspondence: Nuffield Department of Anaesthetics, John Radcliffe Hospital, Headington, Oxford OX3 9DU
2,6-Diisopropyl phenol in a fat emulsion formulation (propofol) has been used to supplement 67% nitrous oxide in oxygen anaesthesia in 20 patients premedicated with morphine 0.15 mg kg-1and atropine 0.6 mg, and undergoing body surface surgery. Following an induction dose of propofol 2.5 mg kg-1, the mean maintenance dose was 73.4µg kg-1min-1. When compared with 10 patients receiving Althesin to supplement nitrous oxide in oxygen in a similar manner, recovery was considerably faster following propofol. The only major side-effect associated with the use of propofol was pain on injection in nine out of 20 patients. When the patients receiving propofol were compared with a second control group (n = 11) in whom anaesthesia was induced with thiopentone 4 mg kg-1and maintained with 1 % halothane and nitrous oxide in oxygen, the former group showed a significant (P<0.01) decrease in the plasma cortisol concentration 30 min after the induction of anaesthesia. However, by 3 h after induction, the cortisol concentration in both groups was not significantly different from the baseline (pre-induction) value. The mechanism of this decrease is not known. In vestigation of the influence of the fat emulsion on blood coagulation andfibrinolysis revealed no differences when compared with patients receiving Althesin.
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