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[Clinical experiences with bretylium tosylate]
Zeitschrift Fur Die Gesamte Innere Medizin Und Ihre Grenzgebiete
|September 1, 1976
Summary
Bretylium tosylate shows promise for treating heart rhythm disorders, offering antiarrhythmic and antifibrillatory effects. This drug may help achieve pharmacological defibrillation, but careful patient monitoring is advised due to observed side effects.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Bretylium tosylate is gaining interest for its antiarrhythmic, antifibrillatory, and positively inotropic properties.
- Clinical and hemodynamic investigations are crucial for understanding its therapeutic potential.
Purpose of the Study:
- To present initial clinical and hemodynamic findings on bretylium tosylate.
- To evaluate its effects on blood pressure, vascular resistance, and cardiac function.
- To confirm its antiarrhythmic efficacy and assess potential side effects.
Main Methods:
- Administered bretylium tosylate intravenously and intramuscularly in doses of 1.6–6.2 mg/kg body weight.
- Conducted clinical and hemodynamic mechanocardiographic investigations.
- Performed orienting investigations to assess antiarrhythmic effects.
Main Results:
- Observed an initial increase in blood pressure followed by a decrease in systolic blood pressure.
- Demonstrated a 10–20% decrease in peripheral vascular resistance.
- Showed a 10–30% increase in heart index and stroke volume index, indicating a positive inotropic effect.
- Confirmed antiarrhythmic effects in preliminary studies.
Conclusions:
- Bretylium tosylate exhibits a positive inotropic effect and reduces peripheral vascular resistance.
- Its antiarrhythmic properties were confirmed, suggesting potential for pharmacological defibrillation.
- Careful patient monitoring is recommended due to observed side effects.