Beta blockers are usually well tolerated and do not always cause impotence. They do not produce diabetes. One has to be a bit careful when diabetics are administerd these agents. Atherectomy is a procedure done very sparingly in the days of stenting. It has in most cases no particular advantage. Ejection fraction improving from 25% to 57% is most unlikely. There is some error in one of the values. Good life style, use of aspirin, statins, beta blockers and ACE inhibitor group of drugs is very effective in avoiding new coronary events.