ACE and Supraventricular tachycardia: Specifically, one patient with left ventricular systolic dysfunction and pathological Q waves was treated with an ACE inhibitor in combination with a beta blocker, another patient with dilated cardiomyopathy, concomitant left ventricular systolic dysfunction, and pathological Q waves received digoxin, an ACE inhibitor+ beta blocker, and a patient who presented with supraventricular tachycardia (SVT) was managed with a beta blocker.