Thirty-five cases of heart disease were operated on with cardiopulmonary bypass between November, 1980 and September, 1981. 1. There were 8 cases of congenital anomaly and 17 cases of acquired heart diseases. 2. There were 7 male and ] 8 female patients, with a mean age of 21 .9 years [range 7 to 42 years]. 3. There were 2 cases of valve replacement cases with operative mortality of 8.3%. 4. Operative mortality for congenital anomaly was ~ 6.7% and 5.9% for acquired heart diseases. 5. Over all operative mortality was 11.4%. [KTCS 1981;4:403-407]