[Apico-aortic conduit repair for the subaortic stenosis in the long-term period after correction of Taussig-Bing malformation].

Apico-abdominal-aortic bypass operation was successfully performed for the left ventricular outflow tract obstruction 17 years after correction of Tausig-Bing malformation. At the age of 14 months old, a 18-year-old patient underwent total correction of Taussig-Bing malformation according to Kawashima's intraventricular re-routing. The right ventricular hemodynamics were normal throughout, however, systolic ejection murmur due to aortic stenosis appeared 3 years after repair. Seventeen years postoperatively, marked aortic valve and subaortic obstruction was detected corresponding with the internal conduit made from the duplicated autopericardial baffle. A composite graft containing 23A-SJM valve was interposed between the left ventricular apex and infrarenal abdominal aorta. After the bypass operation, thickness of the posterior wall of the left ventricle and interventricular septum was significantly reduced and symptoms were remarkably improved. The present paper is concerned with the subaortic stenosis after repair of Taussig-Bing malformation and technique of apico-aortic bypass operation.