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Pharmacokinetics of desflurane uptake into the brain and body
Author(s) -
Lu C. C.,
Tsai C. S.,
Ho S. T.,
Chueng C. M.,
Wang J. J.,
Wong C. S.,
Chang S. Y.,
Lin C. Y.
Publication year - 2004
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.2003.03654.x
Subject(s) - desflurane , medicine , anesthesia , arterial blood , pharmacokinetics , artery , propofol , cardiology
Summary The aim of this study was to investigate the pharmacokinetics of desflurane uptake into the brain and body by comparing desflurane concentrations in internal jugular‐bulb blood (Jdes), arterial blood (Ades) and pulmonary arterial blood (PAdes) at a fixed inspired desflurane concentration. Thirteen patients (aged 42–72 years) undergoing coronary artery bypass grafting surgery were enrolled in this study. They were anaesthetised using a constant 5% inspired desflurane concentration (C I des) during the first hour of anaesthesia. Under constant volume‐controlled ventilation, C I des and end‐tidal desflurane (C E des) were measured with an infrared analyser. The desflurane concentration in the blood was analysed using gas chromatography, and cardiac output was measured using an Opti‐Q pulmonary artery catheter. It took 24 min for the Jdes to equilibrate with Ades. Both C I des–C E des and Ades–PAdes gradients persisted during the study period. There was no further uptake of desflurane into the brain after 24 min but there was near‐constant uptake into the body.