British Journal of Anaesthesia, 1985, Vol. 57, No. 9 872-876
© 1985 The Board of Management and Trustees of the British Journal of Anaesthesia
research-article |
PHARMACOKINETICS OF PHENOPERIDINE IN ANAESTHETIZED PATIENTS UNDERGOING GENERAL SURGERY
Service d'Anesthesie, Centre Medico-Chirurgical Foch 40 rue Worth, 92151 Suresnes,France
Laboratoire Janssen-LeBrun, Paris, France
Correspondence to M. F.
The pharmacokinetics of phenoperidine have been studied in five anaesthetized patients receiving a 2-mg bolus dose i.v. Plasma concentrations were measured using a sensitive radioimmunoassay method. The distribution of phenoperidine was described according to a two-compartment open model. The mean distribution half-life (T
) for the five patients was short (2.2 min); the mean elimination half-life (T
ß) was 193 min. The mean whole body clearance was 22 ml min-1 kg-1 and the apparent steady state distribution volume (VSS) was 5.7 litre kg-1. Secondary concentration peaks occurred in all patients; in two patients these were substantial and occurred 80 min after injection.