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Anaesthesia for cardioversion. A comparison between propofol, thiopentone and midazolam
A Gupta1, C Lennmarken, M Vegfors
1Department of Anaesthesiology, University Hospital, Linköping, Sweden.
Anaesthesia
|October 1, 1990
Summary
Thiopentone is the most effective anesthetic for cardioversion, offering faster recovery and fewer side effects compared to propofol and midazolam. Midazolam resulted in significantly longer recovery times.
Area of Science:
- Anesthesiology
- Cardiology
Background:
- Cardioversion requires safe and effective anesthetic agents.
- Propofol, thiopentone, and midazolam are commonly used, but their comparative efficacy for cardioversion is not fully established.
Purpose of the Study:
- To compare the anesthetic characteristics, hemodynamic effects, and side effects of propofol, thiopentone, and midazolam during cardioversion.
Main Methods:
- A comparative study involving patients undergoing cardioversion.
- Induction and recovery times, hemodynamic parameters (mean arterial pressure), and side effects (apnea, oxygen saturation) were recorded.
- Statistical analysis was performed to determine significant differences.
Main Results:
- Midazolam led to significantly longer recovery times compared to thiopentone and propofol.
- Propofol and midazolam caused a significant decrease in mean arterial pressure post-induction.
- Apnea occurred in 3 patients each for thiopentone and propofol groups. Low oxygen saturation (Spo2 < 95%) was observed in 4 patients each for propofol and midazolam groups.
- Flumazenil reversal for midazolam did not fully resolve drowsiness in 5 of 8 patients.
Conclusions:
- Thiopentone is the most satisfactory anesthetic agent for cardioversion due to its favorable recovery profile and safety.
- Propofol and midazolam present specific side effects and hemodynamic changes that warrant careful consideration.