We report a patient with stenosis of the native ascending aorta after palli
ation of hypoplastic left heart syndrome and aortic atresia. We describe th
e approach to diagnosis, temporary support with extracorporeal membrane oxy
genation, and successful surgical reintervention. Stenosis of the native as
cending aorta is an important, potentially reversible cause of acute, early
postoperative ventricular dysfunction. (Ann Thorac Surg 2000:70:2147-9) (C
) 2000 by The Society of Thoracic Surgeons.