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  • Title: [Treatment of acute myocardial infarction with betareceptor blocking agents. I. Hemodynamic effects of Propranolol in combination with digitalis (author's transl)].
    Author: Oeff M, Lehmann HU, Witt E, Hochrein H.
    Journal: Z Kardiol; 1981 Jun; 70(6):445-9. PubMed ID: 7257499.
    Abstract:
    In the acute stage of transmural myocardial infarction, 22 patients ranging in age from 34 to 76 (mean 61.6) were given propranolol- because of its alleged myocardium-protecting properties - intravenously at a dosage of 0.03 to 0.1 mg/kg body weight under conditions of continuous hemodynamic control. Subsequently, the influence of digoxin, administered i. v. at a dosage of 0.01 my/kg body weight, on the negative-inotropic propranolol effects was examined. A hemodynamic comparison was made of the effects of propranolol before and after digitalis administration. In patients with compensated cardiac function (group 1, 16 patients), the propranolol-induced drop in the left ventricular stroke-work-index and rise in the left-ventricular filling pressure was completely compensated again by digitalis. The frequency-decreasing propranolol effect was nor influenced by digitalis. In patients with cardiac decompensation (group 2, 6 patients) digitalis only led to a renewed compensation of the left-ventricular stroke-work-index, the rise of the left-ventricular filling pressure remained unaffected. It follows from that, in cases of myocardial infarction without cardial decompensation, propranolol requires concomitant digitalisation. In cases of already existent myocardial insufficiency, propranolol can produce an unfavorable increase of the decompensation signs.
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