title: Unusual interatrial communication after the Fontan procedure.
abstract: Two patients are presented who illustrate unusual venous anatomy allowing right-to-left shunting at the atrial level after Fontan repair.
mesh_terms: D006328:Cardiac Catheterization; D002675:Child, Preschool; D003330:Coronary Vessel Anomalies / Q000601:surgery; D005260:Female; D006325:Heart Atria / Q000002:abnormalities* / Q000601:surgery; D006344:Heart Septal Defects, Atrial / Q000209:etiology* / Q000601:surgery; D006352:Heart Ventricles / Q000002:abnormalities* / Q000601:surgery; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000601:surgery*; D014261:Tricuspid Valve / Q000002:abnormalities* / Q000601:surgery