Is A

Right-to-left shunt

May Be Caused by

 Common

Eisenmenger syndrome

Total anomalous pulmonary venous return

Transposition of great vessels with interatrial communication

Tricuspid atresia

 Uncommon

Atrial septal defect with communication of left superior vena cava to left atrium

Ebstein anomaly

Hypoplasia of right ventricle

Normal newborn with patent foramen ovale

Pentalogy of Fallot

Pulmonary hypertension with interatrial communication

Single atrium

Tricuspid stenosis with interatrial communication

Trilogy of Fallot

Uhl anomaly