Tricuspid Atresia: Surgical Palliation and Staged Fontan Circulation

👉Initial palliation balances Qp/Qs: PGE1, ductal stenting, or SP-shunt for low PBF; PA banding for excessive PBF.

👉In Type II TA, restrictive VSD/BVF causes subaortic obstruction, potentially requiring ASO, DKS, or Norwood-type repair.

👉The Glenn reduces ventricular volume load, while Fontan completion requires low PVR, adequate preload, and unobstructed pathways.