We assessed quality of life in 80 patients with ischemic heart disease and pronounced dysfunction of left ventricular myocardium. Forty patients underwent coronary bypass surgery and 40 patients received only medical therapy. Duration of follow-up was 7 years. Baseline quality of life was low in both groups. Degree of its lowering was positively related to functional class of angina and heart failure and negatively - to exercise tolerance. Incessant drug treatment was associated with moderate improvement of quality of life both in groups of patients subjected and not subjected to surgery.