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The Journal of Thoracic and Cardiovascular Surgery, Vol 95, 82-89, Copyright © 1988 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Reconstruction of stenotic or nonconfluent pulmonary arteries simultaneously with a Blalock-Taussig shunt

M Barbero-Marcial, E Atik, JA Baucia, HO Pradel, R Macruz and AD Jatene
Instituto do Coracao, University of Sao Paulo Medical School, Brazil.

Stenosis or discontinuity of the pulmonary arteries associated with congenital cardiac defects was repaired in 12 patients, in conjunction with the Blalock-Taussig shunt. This approach was based on the following concepts: (1) The shunted blood is more uniformly distributed to both lungs, which avoids predominance of flow to the ipsilateral lung and long-term pulmonary vascular damage; (2) because adequate blood flow is maintained, the contralateral lung growth will be near normal; (3) the possibility of future surgical correction is enhanced. The ages of the patients ranged from 2 to 24 months. Five had a primary diagnosis of tetralogy of Fallot, three had double outlet of the right ventricle, three had single ventricle, and one had a truncus type anomaly. All operations were performed without cardiopulmonary bypass. Dilation of the stenotic segment was performed in two patients, enlargement of the stenotic segment in three, and resection of the segment and end-to-end anastomosis in four. Nonconfluent pulmonary arteries were corrected in three patients. In one, the stenotic segment was resected and an anastomosis was made between the left pulmonary artery and pulmonary trunk. In another patient, a segment of the right subclavian artery was interposed between the pulmonary trunk and intrahilar left pulmonary artery. In the third patient, the right pulmonary artery was disconnected from the aorta and a tube was interposed between the right and left pulmonary arteries. There were no intraoperative or late deaths, and postoperative angiographic evaluations were satisfactory. We believe that in infants needing a Blalock-Taussig shunt the pulmonary artery anomalies, if present, should be corrected simultaneously.

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