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  • Title: [Effects of sulfinpyrazone on early ventricular fibrillation and 2d-phase arrhythmias in acute myocardial infarction (author's transl)].
    Author: Gülker H, Bender F, Thale J, Heuer H, Kristek J, Dorsel T, Pierchalla P.
    Journal: Z Kardiol; 1980 Nov; 69(11):751-6. PubMed ID: 7467658.
    Abstract:
    Clinical and experimental studies indicate that ventricular arrhythmias, mainly ventricular fibrillation, are responsible for sudden cardiac death. A recent double-blind multicenter trial ("Anturane Reinfarction Trial") showed that the incidence of sudden cardiac death was reduced in Sulfinpyrazone-treated patients after acute myocardial infarction compared with the placebo group, although the rate of reinfarctions was not diminished. We investigated the efficacy of Sulfinpyrazone on the reduction and prevention of ventricular arrhythmias and primary ventricular fibrillation, utilizing a standardized experimental canine preparation. At normal therapeutic and at high cumulative doses of the drug, a reduction in ventricular arrhythmias within the first 24 hours after coronary occlusion could not be observed. Sulfinpyrazone failed also to alter the ventricular vulnerability to fibrillation in the very early myocardial infarction period. Furthermore, haemodynamics, contractility and oxygen consumption of the heart were not changed. These experimental findings show that the reduction in sudden cardiac deaths in Sulfinpyrazone-treated patients cannot be attributed to antiarrhythmic effects of the drug. Further research is needed to delineate the mechanism of action of Sulfinpyrazone as reported by the Anturane Reinfarction Trial Research Group.
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