This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other hea diseases in children, Subject name: Pediatrics
[{'content': 'Cyanotic hea disease with left axis detion is:- \nSelect and explain. \nA. Tricuspid atresia, B. TGA, C. TAPVC, D. Ebstein anomaly', 'role': 'user'}, {'content': "Answer: A \nExplanation: --> Remember, tricuspid atresia is the only cyanotic hea disease with left axis detion. Tricuspid atresia: Congenital absence of Tricuspid valve. Right ventricle is hypoplastic Features: - Left ventricular type of apical impulse - Large 'a' waves in jugular venous pulse - Enlarged liver with presystolic pulsations - ECG : --> Left axis detion & left ventricular hyperophy --> Mean QRS axis is -450 Patients with tricuspid atresia follow a course similar to TOF OTHER OPTIONS: TGA --> Right axis detion Ebstein anomaly --> Himalayan P waves", 'role': 'assistant'}]