Outcome of Patients with Single Ventricles who Initially did not Indicate Fontan Completion After Stage II Palliation

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The Fontan procedure is the final surgical step for patients with univentricular hearts after stage II palliation.
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Many patients cannot undergo Fontan completion due to elevated pulmonary artery pressure, pulmonary artery stenosis, or significant atrioventricular valve regurgitation.
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Patients who do not complete the Fontan procedure face a high risk of heart failure, arrhythmias, and mortality.
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Some patients may qualify for delayed Fontan completion after re-evaluation and appropriate medical or interventional therapies.
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The study aims to evaluate the clinical course and outcomes of patients who initially did not pursue Fontan completion.

Pediatric Cardiology

by Carolin Niedermaier, Cornelius Przybilla, Thibault Schaeffer, Muneaki Matsubara, Christina Ruda, Jonas Palm, Nicole Piber, Peter Ewert, Jürgen Hörer, Masamichi Ono
July 13, 2026

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