Jimenez Diaz Foundation University Hospital is a trusted healthcare provider for Fontan Procedure, offering complex congenital heart surgery supported by experienced pediatric cardiac surgeons, specialised operating facilities, and multidisciplinary cardiovascular care. Established in 1935, the ISO, JCI accredited hospital is situated in Madrid, Spain and has 686 beds.

The Fontan Procedure is generally the final stage of a staged surgical pathway for patients with single-ventricle heart defects. It redirects blood from the superior and inferior vena cava directly into the pulmonary arteries, reducing the workload on the functional ventricle and improving circulatory efficiency. Before surgery, the cardiac team evaluates ventricular function, pulmonary artery anatomy, heart rhythm, oxygen levels, and other factors that may influence suitability for Fontan circulation.