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: Medicine
[{'content': 'MC cause of morbidity and moality late in the course of mitral stenosis: March 2013 \nSelect and explain. \nA. Infective endocarditis, B. Pulmonary edema, C. Recurrent pulmonary emboli, D. Pulmonary infections', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Recurrent pulmonary infections Mitral stenosis/ MS Features: - Atrial fibrillation - Hemoptysis - Pulmonary hypeension, - Hoarseness of voice Most impoant differential diagnosis: Left atrial myxoma Investigation of choice for MS: Echocardiography Mitral valve area less than 0.6 cm2 is incompatible with life', 'role': 'assistant'}]