As several complications can develop after the atriopulmonary Fontan procedure, total cavopulmonary connection conversion is often considered. We report two cases in which total cavopulmonary connection conversion was performed with a modified Glenn procedure. We used an expanded polytetrafluoroethylene graft between the superior vena cava and extracardiac conduit. This procedure ensures that a balanced hepatic blood flow is perfused into both lungs to avoid pulmonary arteriovenous malformations.
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