Ebstein Anomaly Ebstein Anomaly refers to a defect of
the tricuspid valve. The tricuspid valve separates the right atrium from the right ventricle. The tricuspid valve is displaced
into the right ventricle. This is inside the right ventricle. As a result, the septal leaflet is
tethered and anterior leaflet is enlarged. The abnormal valve can
lead to back flow of blood, referred to as regurgitation, into the
right atrium. In Ebstein Anomaly, the right atrium is larger than normal. There is typically a PFO or ASD. Patent Foramen Ovale, or PFO, is a partially open hole between the top chambers. Atrial Septal Defect, or ASD, is a
completely open hole between the top chambers. This is blood flow in Ebstein Anomaly. Here is blood shunting across the ASD. This is tricuspid valve regurgitation. Tricuspid regurgitation and a small effective right ventricle can lead to heart failure.