Abstract | BACKGROUND: METHODS: Thirty-six ASA physical status I/II/III patients with serum total bilirubin (TBL) from 7.8 to 362.7 micromol/l scheduled for bile duct surgery were recruited. A computer-controlled propofol infusion programmed for effect site target was used to rapidly attain and maintain sequential increase of the compartment concentration (from 1 to 3 microg/ml). Each target-controlled concentration was maintained for about 12 min, and arterial blood samples were drawn for propofol concentration determination. The bispectral index (BIS) and mean arterial pressures (MAP) were used as indices of the propofol effect. The relation between the concentration and the effects was described by the Hill equation. The pharmacodynamic parameters were optimized using a nonlinear mixed-effect model. RESULTS: TBL was not a significant covariate of EC(50) for the pharmacodynamic model. For BIS and MAP, the parameters of the pharmacodynamic model were E(max)=75.77%, EC(50)=2.34 microg/ml, and gamma=1.82, and E(max)=47.83%, EC(50)=1.49 microg/ml, and gamma=1.88, respectively. CONCLUSIONS: We demonstrated that obstructive jaundice with serum TBL from 7.8 to 362.7 micromol/l had no effect on propofol pharmacodynamics observed by BIS and MAP.
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Authors | J C Song, M Z Zhang, Z J Lu, L Q Yang, J G Song, Y M Sun, W F Yu |
Journal | Acta anaesthesiologica Scandinavica
(Acta Anaesthesiol Scand)
Vol. 53
Issue 10
Pg. 1329-35
(Nov 2009)
ISSN: 1399-6576 [Electronic] England |
PMID | 19681778
(Publication Type: Journal Article)
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Chemical References |
- Hypnotics and Sedatives
- Bilirubin
- Propofol
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Topics |
- Aged
- Algorithms
- Bilirubin
(blood)
- Blood Pressure
(drug effects)
- Dose-Response Relationship, Drug
- Electroencephalography
(drug effects)
- Female
- Humans
- Hypnotics and Sedatives
(blood, pharmacokinetics, pharmacology)
- Jaundice, Obstructive
(blood)
- Male
- Middle Aged
- Models, Biological
- Propofol
(blood, pharmacokinetics, pharmacology)
- Treatment Outcome
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