Patients with single ventricle anomalies undergo staged reconstructive heart surgery, resulting in a Fontan circulation. This circulation directly connects systemic venous return to the pulmonary arteries, creating a passive pulmonary circulation that bypasses the right heart. Hemodynamic changes following Fontan circulation affect the liver, leading to Fontan-associated liver disease (FALD), which begins to occur 5–15 years after palliation [1]. Furthermore, more than 40 % of survivors 30 years…