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Transthoracic echocardiography after birth. (A) Tricuspid atresia and hypoplastic right ventricle, (B) a restrictive ventricular septal defect, (C) severe right ventricle outflow tract obstruction, and (D) hypoplastic main pulmonary artery. No ductus arteriosus could be seen. Ao, aorta; RV, right ventricle; RVOT, right ventricle outflow tract; Pv, pulmonary valve.
