Echocardiograph in an infant with tricuspid valve atresia

This is an apical 4-chamber view of the heart taken from an echocardiogram performed in an infant with TV atresia type Ib (normal anatomy of the great arteries and a small VSD). The enlarged atria and LV, an interatrial communication, and a small slit-like RV (*) with absence of the TV are appreciated. The VSD and pulmonary stenosis associated with subtype Ib of TV atresia are not demonstrated in this frame.