If her cath shows enlarged heart and a lower EF, she needs to be on a beta blocker like
Coreg (
Carvedilol), an ACE1 inhibitor, possibly Aldactone, diuretics, needs to follow a strict low sodium diet, and try to exercise. Sometimes no cause is found for dilated cardiomyopathy. I think a complete bundle branch block would be more worrisome, and possibly you might want to wait 6 months or so before jumping into an ICD.