text: <unk>  is a congenital heart defect in which one of ventricular chambers is absent or very small, or a defect in which the septum between the two ventrilces is missing. These defects are also termed hypoplastic left heart syndrome or hypoplastic right heart syndrome.
option_0: Single ventricle
option_1: Pulmonary atresia
option_2: Double outlet right ventricle
option_3: Bronchial atresia
option_4: Aortic arch anomalies
option_5: Interrupted aortic arch
option_6: Transposition of the great vessels
option_7: Lung agenesis