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': '7 day old baby presented in emergency department with unconsciousness, cyanosis and 85% oxygen saturation. The diagnosis – a)  Tetralogy of fallotb)  TGAc)  TAPVCd)  PDA \nSelect and explain. \nA. a, B. bc, C. ac, D. ad', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This child has cyanosis at birth (within 7 days).\nCongenital heart diseases which present with cyanosis at birth are : TGA, TAPVR, Tricuspid atresia, pulmonary atresia, Ebstein anomaly.\nIn TOF cyanosis usually presents after neonatal period (after 28 days).', 'role': 'assistant'}]