the indication for antiarrhythmic therapy should be regarded as established in patients successfully resuscitated after unexpected ventricular fibrillation as well as in patients status-post myocardial infarction , with angina pectoris , cardiomyopathies , qt-prolongation , mitral valve prolapse , congenital or other markedly symptomatic heart disease and high-grade ventricular arrhythmias .
C0027051
myocardial infarction
C0018799
heart disease