I am 72, M, on Coreg, lisinopril; no bypass, angioplasty, stent; had PVC's, but controlled with Coreg; last year, EF was 55; now EF by MUGA is 32. The closest I had to this was in '96 when I was in CCU for viral myocarditis I do 30 min cardio 7 days a week, on alternate days I do 40 regular push-ups, 30 staggered push-ups, 60 crunches, 60 squats, etc ; on other days, I lift weights; I weigh 104 lbs, I routinely carry 40 lbs, 50 yds without effort; have active sex life. Anyone encountered any mistakes in doing a MUGA SCAN? Maybe in preparing the isotope? Thanks.