title: Echocardiographic diagnosis of overriding tricuspid valve in a child with Ebstein's anomaly.
abstract: The M-mode echocardiographic diagnosis of overriding tricuspid valve rests on the ability to demonstrate simultaneously two atrioventricular valves with no intervening septal echo [6, 13]. When scanning inferiorly toward the body of the ventricles, a distinct septal echo at the level of the midportion of the tricuspid valve can be detected. Here we report a case of Ebstein's anomaly, pulmonary stenosis, and ventricular septal defect (VSD), in which the echogram falsely indicated an overriding tricuspid valve.
mesh_terms: D002675:Child, Preschool; D004437:Ebstein Anomaly / Q000175:diagnosis*; D004452:Echocardiography; D006345:Heart Septal Defects, Ventricular / Q000175:diagnosis; D006801:Humans; D008297:Male; D011666:Pulmonary Valve Stenosis / Q000175:diagnosis; D014261:Tricuspid Valve / Q000002:abnormalities*