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': "Tetralogy of Fallot's present with one of the following? \nSelect and explain. \nA. Cenral cyanosis with clubbing, B. Cardiomegaly, C. Left ventricular hyperophy, D. Normal ECG and Chest x-ray", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Central cyanosis with clubbing Clinical features of TOF : o Dysnea on exeion and exercise intolerance Most common. o Cyanosis usually presents after neonatal period o Hypoxemic or cyanotic spells (Tet spells) o Commonest congenital lesion with which squatting is used o Clubbing o Ausculatory findings : S1 --> Normal S2 --> Single predominantly Aoic Murmur --> Ejection systolic o TOF patients are RARELY CYANOTIC AT BIH* Chest x-ray Normal hea size Oligaemic lung fields Right aoic arch present in 25% case o ECG --> Right axis detion, Inveed Twave, `P' pulmonale About option 'b' o Pulmonary stenosis causes pressure oveload --> Concentric right ventricular hyperophy without cardiac enlargement.", 'role': 'assistant'}]