during spontaneous episodes of st elevation recorded in hospital , 56 of the 114 patients had serious arrhythmias : ventricular fibrillation in two , ventricular tachycardia in 28 , ventricular couplets or bigeminy in 17 , second- or third-degree atrioventricular block in six and asystole in three .
C0003811
arrhythmias
C0151517
third-degree atrioventricular block