[Surgical repair of an extreme type of tetralogy of Fallot using valved extracardiac conduit].

Three patients with an extreme type of tetralogy of Fallot underwent corrective surgery using the valved extracardiac conduit for reconstruction of the main pulmonary arteries. The conduit consisted of bicuspid valve which was made of heterogeneous pericardium of 18 or 20 mm in diameter. The conduit was sutured to the pulmonary artery followed by an end-to-end anastomosis between the conduit and a Dacron tube which was sutured to the right ventricular outflow tract. Postoperative echocardiography showed little pulmonary regurgitation. Postoperative courses of all the patients have been uneventful.