MITRAL REGURGITATION (MR)

ETIOLOGY

Acute MR: Infective endocarditis, papillary muscle rupture post-MI, ruptured chordae tendineae. Chronic MR: Myxomatous deformity (mitral valve prolapse [MVP]), mitral annular calcification, rheumatic, healed endocarditis, congenital, radiation damage, LV enlargement of any cause, hypertrophic cardiomyopathy (with systolic anterior motion of anterior mitral leaflet).

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