Thank you for your question! Your husbant unfortunately seems to have suffered a complicated MI (now with CHF presence); it is very important to preserve his already lowered cardiac function. Another heart attack could be fatal for him. So the best thing to do is to be very aware and to protect the remaining (not infarcted) cardiac muscle from any ischemic event. It is reasonable to treat those 3 stenose in the RCA. Sometimes it is difficult to decide the borderline stenoses 50-75%, as they usually are considered not clinically significant. In order to rule out their innocence FFR (fractional flow reserve) measurement is performet in the cath lab; I don t know if it is available to your cardiac center. Nevertheless, as your husband has chest pain complains, a serious work-yp should be done; first to check for specific cardiac enzymes (CK-MB,Troponin I): sometimes CHF presence can influence the test results. After treating Congestive Heart Failure to a compensated state I recommend to angioplasty of RCA. I am not so optimistic for Stress testing at these moments and I am not sure for its value (CHF presence). Cardio-pulmonary stress test is performed to HF patients of that severity (EF 20-25%) only when is discuSsed for the possibility of a cardiac transplantation. Hope to have been helpful to you. Dr. Iliri