What question did this study set out to answer?

This research aims to determine the optimal size of transannular patches used in Tetralogy of Fallot repairs and its impact on pulmonary regurgitation.

March 13, 2026Heart Lung and Circulation0 citationsOpen Access

Optimal Size of Transannular Patches for Tetralogy of Fallot Repair

FSFumiaki ShikataUniversity of Tokyo Hospital NONorihiko OkaFundación Juan March TOToru OkamuraGunma Children's Medical Center

Key Points

This research aims to determine the optimal size of transannular patches used in Tetralogy of Fallot repairs and its impact on pulmonary regurgitation.
Evaluated long-term effects of extensive transannular patches in Tetralogy of Fallot repairs.
Assessed PVA Z scores before and after intervention.
Compared cumulative pulmonary regurgitation ratios based on reconstructed PVA Z score changes.
Extensive transannular patches correlated with higher risk of progressive pulmonary regurgitation.
Patients with PVA Z scores increasing by less than 4 showed better cumulative pulmonary regurgitation ratios.

Abstract

Extensive TAP was a significant risk factor for progressive PR in the long-term. Patients whose reconstructed PVA Z scores increased by less than 4 from preoperative values demonstrated better cumulative PR ratios after ICR.

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