British Journal of Anaesthesia, Vol 84, Issue 4 443-449, Copyright © 2000 by Oxford University Press
H Wissing, I Kuhn, S Rietbrock and U Fuhr
The pharmacokinetic characteristics of desflurane, isoflurane and
sevoflurane (16 patients for each anaesthetic) were estimated from
measurements of inspired and end-expired agent concentrations and
ventilation, obtained during routine anaesthesia in patients undergoing
maxillofacial surgery (mean age 38 yr, duration of anaesthesia
approximately 2 h). A two-compartment model described the data adequately.
Although isoflurane and sevoflurane have almost the same tissue/blood
partition coefficients, significant differences between substances were
observed for the peripheral volume of distribution (medians and ranges:
desflurane, 612 (343-1850) mlvapour kgbw-1; isoflurane, 4112 (1472-9396)
mlvapour kgbw-1; sevoflurane, 1634 (762- 8843) mlvapour kgbw-1) and the
transport clearance from the central to the peripheral compartment
(desflurane, 7.0 (4.4-11.1) mlvapour kgbw-1 min-1; isoflurane, 30.7
(15.9-38.7) mlvapour kgbw-1 min-1; sevoflurane, 13.0 (9.8-22.4) mlvapour
kgbw-1 min-1). Thus, during clinical anaesthesia the important
characteristics of the compounds could be obtained and compared between
substances from simple data.
ARTICLES
Pharmacokinetics of inhaled anaesthetics in a clinical setting: comparison of desflurane, isoflurane and sevoflurane
Department of Anaesthesiology, Johann Wolfgang Goethe University Hospital, Frankfurt am Main, Germany.
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