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Propofol does not induce pulmonary dysfunction in stressed endotoxic pigs receiving Intralipid
Avishai Ziser1, Robert A Strickland, Michael J Murray
1Rambam Medical Center, Haifa, Israel.
Critical Care Medicine
|July 9, 2003
Summary
Diisopropyl phenol (propofol) and Intralipid did not worsen cardiopulmonary function in endotoxic pigs. Thromboxane B(2) levels increased with high-dose Intralipid, but overall endotoxemia effects were not exacerbated.
Area of Science:
- Anesthesiology
- Critical Care Medicine
- Veterinary Medicine
Background:
- Endotoxemia induces significant cardiopulmonary dysfunction.
- Propofol and Intralipid are commonly used in critical care settings.
- Understanding their effects during endotoxemia is crucial.
Purpose of the Study:
- To evaluate the impact of diisopropyl phenol (propofol) with and without Intralipid on cardiopulmonary parameters.
- To assess the effect on thromboxane production in a model of endotoxemia.
- To determine if these agents exacerbate endotoxic shock in pigs.
Main Methods:
- Prospective, randomized animal study in 24 pigs.
- Induction of endotoxemia via endotoxin bolus and infusion.
- Administration of varying doses of diisopropyl phenol and Intralipid.
- Continuous monitoring of hemodynamic parameters and intermittent blood gas analysis.
Main Results:
- Endotoxin significantly increased pulmonary vascular resistance and decreased Pao(2).
- Diisopropyl phenol and Intralipid did not alter these endotoxin-induced changes.
- Thromboxane B(2) levels were higher in the high-dose Intralipid group during the final hour.
Conclusions:
- Low-dose endotoxemia causes significant cardiopulmonary derangements in pigs.
- Neither Intralipid nor diisopropyl phenol worsened the physiological effects of endotoxemia.
- Further research may explore specific mechanisms of thromboxane elevation with Intralipid.