Plethoric lung field is seen in which CHD –

Plethoric lung fields → If the pulmonary blood flow is increased, the lung fields appear plethoric throughout and in addition cardiomegaly is present. Oligenic lung fields → If the pulmonary blood flow is diminished there is paradoxical prominence of hilar arteries with clear or ischemic peripheral lung fields. CHDs with plethoric lung fields Cyanotic Truncus arteriosus Single ventricle TGA TAPVR Hyperplastic It. heart Acyanotic VSD ASD PDA CHDs with oligemic lung fields Cyanotic Tricuspid atresia Eisenmenger's syndrome Ebstein's anomaly Truncus arteriosus with hypoplastic pulmonary artery Single ventricle with PS Acyanotic As or AR Coarctation of aorta MR or MS PS