recordings begun within 24 hours after admission to a coronary care unit showed that 76 % of patients eventually found to have had a myocardial infarction had ventricular arrhythmias of a type generally regarded as serious , whereas of patients in whom myocardial infarction was not substantiated , only 24 % had such arrhythmias .
C0085612
ventricular arrhythmias
C0003811
arrhythmias