Etiology
Rheumatic heart disease in ~33% of patients with chronic MR. Other causes: mitral valve prolapse, ischemic heart disease with papillary muscle dysfunction, LV dilatation of any cause, mitral annular calcification, hypertrophic cardiomyopathy, infective endocarditis, congenital.
Mitral Regurgitation (MR) has been found in Harrison's Manual of Medicine 17/e
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