Incidence of concomitant coronary disease and extent of coronary artery lesions were assessed in 250 patients with acquired post-rheumatic aortic valve disease treated between 1976 and 1986 in National Institute of Cardiology. Patients' age ranged from 30 to 72 years. Hemodynamic examination with selective coronarography were performed in patients with typical effort or rest angina pain, with electrographically documented myocardial infarction in the past and also in those without (CAD clinical symptoms, but older than 45 years. Patients were divided into two groups: with isolated or dominated aortic valve stenosis (139 patients) and with isolated or dominated aortic valve incompetence. Patients younger and older than 45 years were separately analyzed. Concomitant CAD was proved if at least one coronary artery stenosis was stated. Lesions degree was proportionally graded: stenosis more than 70%, between 50-70% and 20-50% of a vessel lumen in relation to its diameter before lesion. Data were analyzed using ICL ME 29 computer. Study results indicate, that symptoms of coronary failure were observed in 82.8% of patients with acquired aortic valve disease. In 37% of cases there were critical stenoses requiring simultaneous aortic valve replacement with coronary artery by-pass grafting. Severe coronary artery stenosis was stated in 45% of patients with dominated or isolated aortic valve incompetence, whereas only in 29.3% with dominated or isolated aortic valve stenosis. 88.5% of patients younger than 45 years nevertheless coronary failure symptoms had normal coronary arteries.