Longevity of Large Aortic Allograft Conduits in Tetralogy With Major Aortopulmonary Collaterals

Appropriate conduit selection for right ventricle (RV)-to-pulmonary artery (PA) connection has been studied extensively, with older implantation age, pulmonary (vs aortic) homografts, and true sizing associated with increased longevity. Notably, patients with PA arborization abnormalities (ie, major aortopulmonary collateral arteries [MAPCAs]) are reported to need earlier and more frequent conduit interventions. We aim to understand the behavior of large-diameter aortic homografts in patients with MAPCAs, which are programmatically utilized at our institution.