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[Peridural anesthesia in thoraco-abdominal surgery. Propofol-methohexital comparison for complementary anesthesia]
G Coquelin1, J F Quinot, G Donnard
1Service d'Anesthésie-Réanimation, Hôpital d'Instruction des Armées Sainte-Anne, Toulon Naval.
Summary
Propofol infusion provided superior anesthesia compared to methohexital infusion during major surgeries. Propofol ensured smoother maintenance and better anesthetic control, despite some bradycardia cases.
Area of Science:
- Anesthesiology
- Pharmacology
Background:
- Effective anesthesia is crucial for major abdominal and thoracic surgeries.
- Comparing intravenous anesthetic agents like propofol and methohexital is essential for optimizing patient care.
Purpose of the Study:
- To compare the efficacy and safety of propofol versus methohexital for anesthesia maintenance in patients undergoing major abdominal or thoracic surgery.
Main Methods:
- Two groups of 20 patients received thoracic peridural analgesia with bupivacaine and fentanyl.
- Anesthesia was induced and maintained using either propofol 0.2% or methohexital 0.1% infusions.
- Hemodynamic parameters, intubation requirements, and anesthetic control were monitored.
Main Results:
- Propofol group showed smoother maintenance and better anesthetic control (18/20 patients) compared to methohexital (only 6/20 patients).
- Fewer patients required muscle relaxants (vecuronium) for intubation in the propofol group (4/20) versus methohexital (19/20).
- Propofol infusion led to decreased heart rate and blood pressure, while methohexital caused increases; 5 cases of sinus bradycardia occurred with propofol.
Conclusions:
- Propofol infusion is a more effective agent for achieving adequate anesthesia during major surgeries compared to methohexital infusion.
- While propofol can cause bradycardia, its overall anesthetic control and smoother maintenance outweigh this risk in this surgical context.