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Article
Pharmacokinetics of Propofol in Women Undergoing Elective Caesarean Section
British Journal of Anaesthesia (1990)
  • Kelvin Chan
Abstract

We have compared the pharmacokinetics of a bolus induction dose of propofol 2 mg kg-1 in 10 Chinese women undergoing elective Caesarean section with those in six non-pregnant Chinese women having laparoscopic sterilization. Blood propofol concentrations were measured using high pressure liquid chromatography with fluorimetric detection. Pharmacokinetic data were analysed by a model independent method based on statistical moment theory. Data from the laparoscopy group also underwent compartmental analysis, which produced similar kinetic results. Non-compartmental analysis estimated that the women undergoing Caesarean section had a similar elimination half-life (mean 81.27 (SD 18.87) min) and apparent volume of distribution at steady state (2.66 (0.63) litre kg-1) as non-obstetric patients (99.45 (29.40) min and 3.36 (1.87) litre kg-1). Clearance was more rapid in the Caesarean section group (39.32 (8.07) ml min-1 kg-1 vs 29.40 (8.72) ml min-1 kg-1) (P < 0.05). The increased total body clearance may result from blood loss and delivery of the fetus and placenta at operation, although an increase in extrahepatic clearance is also possible.

Keywords
  • Anaesthesia,
  • obstetric,
  • anaesthetics intravenous,
  • propofol,
  • pharmacokinetics,
  • pregnancy
Publication Date
1990
Citation Information
Kelvin Chan. "Pharmacokinetics of Propofol in Women Undergoing Elective Caesarean Section" British Journal of Anaesthesia Vol. 64 (1990)
Available at: http://works.bepress.com/kelvin_chan/74/