[A successful case of external conduit operation for tetralogy of Fallot with pulmonary atresia at the age of 17 months].

We report a successful case of external conduit operation in a 7.2 kg male infant. A 17-month-old boy was admitted because of increasing cyanosis and polycythemia. He had undergone classical Blalock-Taussig shunt at the age of 51 days with the diagnosis of tetralogy of Fallot with pulmonary atresia. Cardiac catheterization showed stenosis of the right pulmonary artery related to the site of the shunt. We chose external conduit operation and correction of the right pulmonary artery stenosis instead of additional shunt and correction of the stenosis with cardiopulmonary bypass. He is in a good postoperative condition. It is preferable that external conduit operation is applied to similar infant cases from the standpoint of exercise ability, myocardial degeneration and postoperative arrhythmia.