the incidence of hearts with ventricular premature extrasystoles , ventricular tachycardia , and fibrillatioon ventricular fibrillation could be abolished in the presence of an extracellular potassium concentration of 12 mmol-litre -- 1 , whereas with 4.5 mmol-litre -- 1 all hearts developed all the ventricular arrhythmias including fibrillation .
C0042514
ventricular
C0085612
ventricular