Tricuspid atresia is one of the less common forms of congenital heart disease. The results of palliative surgery in 72 children are presented. Cardiac catheterization and angiocardiography are essential for precise definition of the anomaly. There is a 20% incidence of obstruction at atrial septal level. Closed atrial septostomy is of value in such cases in infancy. In most there is a reduced pulmonary blood flow. This may be increased by anastomosis of either the superior vena cava or a systemic artery to the pulmonary artery. The caval anastomosis, while having theoretical advantages, is not always possible, especially in small infants. In this series systemic arterial shunts have given at least comparable results, suggesting that both techniques are of value with this anomaly.
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