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': 'All of the following are true about ASD ilk except – \nSelect and explain. \nA. Right atrial hypertrophy, B. Left atrial hypertrophy, C. Right ventricular hypertrophy, D. Pulmonary hypertension', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In ASD there is abnormal communication between left and right atria which causes left to right shunt because pressure in left atrium is higher (3-5 mm Hg) than right atrial piessure.\nThis results in : -\n\n\nVolume overload to right atrium\xa0 → Dilatation and hypertrophy of right atrium.\nVolume overlead to right ventricle \xa0→ Dilatation and hypertrophy of right ventricle.\nIncreased blood flow through lungs\xa0→ Pulmonary plethora which can cause pulmonary hypertension.', 'role': 'assistant'}]