<unk> s<unk>  is a rare heart defect in which parts of the<unk>  valve are abnormal. The<unk>  valve separates the right lower heart chamber (right ventricle) from the right upper heart chamber (right atrium). This condition is congenital, which means it is present from birth.
Ebsteins anomaly of the tricuspid valve
Quadricuspid pulmonary valve
Double orifice mitral valve
Quadricuspid aortic valve
Atrial septal defect sinus venosus
Arrhythmogenic right ventricular dysplasia
Atrial septal defect ostium secundum
Atrial septal defect ostium primum