Aplicaçäo de Metildigorcina, alfa-e-Acetildigoxina em cäes sadios: concentraçöes séricas, período de meia-vida e efeitos sobre o eletrocardiograma / Methyl-, alfa-and B-acetyl-digoxin administration in healthy dogs: blood levels, half-life and effect on the electrocardiogram

A aplicaçäo de derivados de digoxina em cäes forneceu concentraçöes séricas médias, no platô, de 1,43ng/ml para metildigoxina e de 1,08 a 1,02ng/ml para B- e alfa-acetildigoxina, respectivamente. O período de meia-vida sérica foi de 53,6 h para o metilderivado, de 21,5h e de 23,4h, respectivamente, para os acetilderivados alfa e B. Alteraçöes eletrocardiográficas limitaram-se ao prolongamento do intervalo PQ, quando os níveis séricos mantiveram-se nos limites terapêuticos. Bloqueio atrioventricular de primeiro grau e inversäo de ondas T ocorrem em animais com concentraçöes digitálicas superiores a 0,2 ng/ml

Clinical Evaluation of Alpha-Acetyldigoxin in Patients with Congestive Heart Failure

The results of alpha-acetyldigoxin(Dioxanin(R)) administration in 21 patients with congestive heart failure were as follows. Alpha-acetyldigoxin is a new oral preparation of cardiac glycoside derived from lanatosid C. 1. For rapid digitalization in 2-3 days, the initial dose was 1.2 to 2.6mg (average 1.96mg). For medium-fast digitalization in 4 days, the loading dose was 2.0 to 3.2mg (average 2.7mg). For slow digitalization 0.1 to 0.4mg was required for 5 to 6 days without loading dose. The maintenance dose was 0.1 to 0.4mg (average 0.33mg) daily. 2. The therapeutic effect of acetyldigoxin was excellent in 15 cases (71%), good in 4 cases (20%) and stationary in 2 cases (9%). 3. Side effects were observed in 2 cases with usual dosage regimen. One accidental case who took single dose of 4mg(20 tablests) developed supraventricular tachycardia with varying degree of atrioventricular block, ventricular bigeminy and premature beat but recovered completely after 6 days.