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  • Title: Reparative operations for interrupted aortic arch with ventricular septal defect.
    Author: Norwood WI, Lang P, Castaneda AR, Hougen TJ.
    Journal: J Thorac Cardiovasc Surg; 1983 Dec; 86(6):832-7. PubMed ID: 6196575.
    Abstract:
    From January, 1975, through September, 1982, 24 infants underwent primary or staged repair of interrupted aortic arch (IAA) with ventricular septal defect (VSD). Seven patients had IAA type A and 17 patients had type B. Eleven of the patients, median age 5 days, underwent staged operations and 13 infants, median age 6 days, underwent primary repair. Palliation was by tube graft interposition (six), subclavian-aortic anastomosis (three), left carotid-aortic anastomosis (one), or end-to-side aortic anastomosis (one) combined with pulmonary artery banding (eight) or early VSD closure. With palliation, there were three (27%) early deaths among the eleven patients and one (13%) late death among the eight remaining. Delayed repair at 5 days to 14 months (median 7 months) in seven patients incurred three (43%) early and no late deaths. Primary repair in 13 patients consisted of VSD closure combined with graft interposition (12) or end-to-side aortic anastomosis (one), with three (23%) early and no late deaths. Nine of 14 survivors had hemodynamic evaluation by catheterization 1 to 3 years following repair. None had a significant residual VSD or pressure gradients between the ascending and thoracic aorta. Six had subaortic stenosis, two mild (gradient less than 20 mm Hg) and four severe (gradient greater than 50 mm Hg), necessitating operation. Results of operations in neonates with IAA continue to improve. Essential in management is an awareness that subaortic stenosis and hypocalcemia may be accompaniments of this anomaly. Based on these data, we prefer primary repair for IAA with VSD.
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