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Published on: October 16, 2013
[Pharmacodynamics of two different propofol formulations]
H Ihmsen1, C Jeleazcov, J Schüttler
1Anästhesiologische Klinik, Friedrich-Alexander-Universität Erlangen-Nürnberg, Krankenhausstrasse 12, 91054 Erlangen. Harald.Ihmsen@kfa.imed.uni-erlangen.de
Der Anaesthesist
|February 16, 2006
Summary
Two propofol lipid formulations showed no difference in pharmacodynamics, measured by EEG and clinical signs. This suggests that the lipid base does not impact propofol's effects.
Area of Science:
- Anesthesiology
- Pharmacology
- Neuroscience
Background:
- Propofol is available in multiple lipid formulations.
- Comparing the pharmacodynamics of different propofol formulations is crucial for clinical practice.
Purpose of the Study:
- To compare the pharmacodynamics of two different propofol lipid formulations.
- To evaluate the influence of lipid formulations on propofol's effects on EEG and clinical signs.
Main Methods:
- Ten volunteers received computer-controlled infusions of Diprivan 1% and Propofol 1% MCT Fresenius.
- Pharmacodynamics were assessed using EEG median frequency and clinical reflexes.
- A sigmoid Emax model was used to analyze propofol plasma concentrations and effects.
Main Results:
- No significant differences in pharmacodynamics were observed between the two propofol formulations.
- EEG analysis (EC50 values) and clinical signs showed comparable effects for both drugs.
- A steep concentration-effect relationship and hysteresis were noted in the pharmacodynamic model.
Conclusions:
- The investigated lipid formulations do not influence the pharmacodynamics of propofol.
- Clinical outcomes related to propofol's effects are similar across different lipid formulations.
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