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Heart rate changes caused by enflurane and halothane anaesthesia in man
Acta Anaesthesiologica Scandinavica. Supplementum
|January 1, 1978
Summary
Enflurane anesthesia increased heart rate and decreased arterial pressure. Halothane anesthesia decreased heart rate but did not affect arterial pressure, indicating enflurane has a positive chronotropic effect.
Area of Science:
- Anesthesiology
- Cardiovascular Physiology
Background:
- Understanding anesthetic effects on cardiovascular function is crucial for patient safety.
- Diazepam and scopolamine are commonly used premedicants influencing anesthetic responses.
Purpose of the Study:
- To compare the cardiovascular effects of enflurane and halothane anesthesia.
- To evaluate the impact of diazepam and scopolamine premedication on these responses.
Main Methods:
- Investigated changes in heart rate and arterial pressure in patients.
- Administered enflurane and halothane anesthesia.
- Patients received diazepam and scopolamine premedication.
Main Results:
- Enflurane significantly increased heart rate (12%) and decreased arterial pressure (23%).
- Halothane significantly decreased heart rate (14%) but did not alter arterial pressure.
- Premedication with diazepam and scopolamine was administered.
Conclusions:
- Enflurane exhibits a positive chronotropic effect.
- Halothane primarily affects heart rate negatively, with minimal impact on arterial pressure.
- Anesthetic choice influences cardiovascular hemodynamics differently.