Tricuspid Atresia With Truncus Arteriosus: Off-Pump Stage I Palliation.

Coexistence of tricuspid atresia and truncus arteriosus (common arterial trunk) is an extremely rare combination of anomalies and requires staged palliation. Initial palliation involves disconnection of the pulmonary arteries from the common trunk and creation of a systemic-to-pulmonary artery shunt. This has generally been accomplished with the use of cardiopulmonary bypass. We describe a technique of off-pump palliation using the common trunk and a modified Blalock-Taussig shunt as sources of pulmonary blood flow at various stages of reconstruction. The child has recovered well and has undergone second-stage palliation with bilateral bidirectional superior cavopulmonary anastomoses at one year of age.