[Transthoracic defibrillation of cardiac ventricles: effects of novocainamide on effectiveness of an electric impulse of bipolar sinusoidal shape].

: Experiments on nembutal-narcotized dogs were made to study dose effects of novocainamide (10-65 mg/kg) on threshold values of transthoracic defibrillation current of bipolar sinusoidal shape. Reversible dose-dependent increase of the threshold of ventricular defibrillation by 21%, on the average, was achieved only after novocainamide lowering of arterial pressure by 15-35 mm Hg. Coefficient of correlation between the drug dose and intensity of the efficient current made up 0.72.