Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 2/5/2026

Prognosis and Timing of Repair in Tetralogy of Fallot

Long‑Term Survival Outcomes

  • In contemporary surgical series of patients with repaired Tetralogy of Fallot, 25‑year survival is 94 %–95 % and 36‑year survival ranges from 85 % to 96 %, reflecting the high durability of modern repair techniques. 1, 2, 3, 4, 5
  • Performing primary repair between 3 and 6 months of age is advised to achieve optimal long‑term outcomes and to minimize adverse events after surgery. 1, 2, 4