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The Annals of Thoracic Surgery, Vol 52, 647-651, Copyright © 1991 by The Society of Thoracic Surgeons

ARTICLES

Growth of the hypoplastic ascending aorta after radical palliation

K Turley
Pediatric Cardiovascular Surgery, California-Pacific Medical Center, San Francisco 94115.

Surgical treatment of hypoplasia of the ascending aorta is a difficult problem. An approach using proximal pulmonary artery to distal aorta bypass with distal pulmonary artery banding was employed in 19 patients with an ascending aorta less than 6 mm in diameter but a patent aortic outflow. There were 11 male and 8 female neonates and infants, and weight ranged from 2 to 4.5 kg (median weight, 3.5 kg). Four patients had transposition of the great arteries, 12 had subaortic stenosis, and 5 had interrupted aortic arch. There was one operative death. Cerebral cyanosis developed in 3 of the 4 patients with transposition of the great arteries and necessitated additional operations within the first year postoperatively. Therefore, palliation with a pulmonary artery to descending aorta conduit and banding was abandoned in such patients. All 14 surviving patients with normally related great arteries had successful palliation and growth of left heart structures. Subsequent procedures included a Fontan/Damus procedure in 1 patient, patch aortoplasty and pulmonary arterioplasty in 5 patients, arch reconstruction with aortic valvulotomy and pulmonary arterioplasty in 2, double arch reconstruction in 2, and simple patch aortoplasty with plans for subsequent pulmonary arterioplasty and ventricular septal defect closure in 1. Results demonstrate that in patients with a hypoplastic ascending aorta, this radical method of palliation can result in growth of right and left heart structures and thus provides the possibility of biventricular repair.


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Copyright © 1991 by The Society of Thoracic Surgeons.