This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': "Plethoric lung field is seen in which CHD – \nSelect and explain. \nA. Ebstein's anomaly, B. Tricuspid atresia, C. AS, D. VSD", 'role': 'user'}, {'content': "Answer: D \nExplanation: Plethoric lung fields\xa0→ If the pulmonary blood flow is increased, the lung fields appear plethoric throughout and in addition cardiomegaly is present.\nOligenic lung fields\xa0→ If the pulmonary blood flow is diminished there is paradoxical prominence of hilar arteries with clear or ischemic peripheral lung fields.\n\nCHDs with plethoric lung fields Cyanotic\n\nTruncus arteriosus\nSingle ventricle\nTGA\nTAPVR\nHyperplastic It. heart\n\nAcyanotic\n\nVSD\nASD\nPDA\n\nCHDs with oligemic lung fields Cyanotic\n\nTricuspid atresia\nEisenmenger's syndrome\nEbstein's anomaly\nTruncus arteriosus with hypoplastic pulmonary artery\nSingle ventricle with PS\n\nAcyanotic\n\nAs or AR\nCoarctation of aorta\nMR or MS\nPS", 'role': 'assistant'}]