[Mixed type total anomalous pulmonary venous connection with the left upper pulmonary vein draining into the innominate vein and the other pulmonary veins into the coronary sinus--surgical correction in 2 infants].

Surgical repair of the mixed type total anomalous pulmonary venous connection (TAPVC) in infancy is known to be difficult. In this report, experience of two infants with the mixed type TAPVC with the left upper pulmonary vein (PV) draining into the innominate vein and the other PVs into the coronary sinus (IIa + Ia (left upper PV) type TAPVC) is presented. In such cases, it has been said that the left upper PV should be left uncorrected, but we anastomosed the left upper PV, that was thin and fragile, to the left atrium and corrected all the other anomalous PVs. The results were satisfactory. Recently, Extra-Corporeal circulation, microsurgery, and other techniques have significantly progressed, so we consider that the anastomosis is possible in most infants with IIa + Ia (left upper PV) type TAPVC. In the future, careful clinical follow-up and repeat catheterizations should be done, and we'd like to examine the long term patency of the left upper PV.