British Journal of Anaesthesia, 1985, Vol. 57, No. 9 883-885
© 1985 The Board of Management and Trustees of the British Journal of Anaesthesia
research-article |
PHARMACOKINETICS OF DIAZEPAM AND MIDAZOLAM WHEN USED FOR SEDATION FOLLOWING CARDIOPULMONARY BYPASS
Department of Anaesthetics, The Queen's University of Belfast and Department of Clinical Anaesthetics, Royal Victoria Hospital, Belfast
Correspondence to J. W. Dundee, Department of Anaesthetics, The Queen's University of Belfast, 97 Lisburn Road, Belfast, N. Ireland.
The water-soluble benzodiazepine, midazolam, was compared with diazepam for postoperative sedation in patients following cardiopulmonary bypass. Midazolam in repeated doses produced a stable plasma concentration within 4 h, showed no tendency to cumulation and was cleared rapidly following discontinuation. Similar doses of diazepam given with the same frequency produced plasma concentrations which were still increasing at the time of discontinuation and which were still greater than their baseline values 24 h later.