Significance of multiple responses produced by electrical depolarization of the heart.
D000818:Animals; D001001:Anura; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D004071:Digitalis Glycosides / Q000009:adverse effects; D004285:Dogs; D004554:Electric Countershock / Q000009:adverse effects*; D006801:Humans; D011342:Procainamide / Q000009:adverse effects; D014693:Ventricular Fibrillation / Q000209:etiology*
D004071:Digitalis Glycosides; D011342:Procainamide