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Etiology of mitral regurgitation.
| Valvular-leaflets | Annulus |
| • Myxomatous mitral valve disease | • Calcification |
| • Rheumatic endocarditis | • Endocarditis |
| • Endocarditis | Papillary muscles |
| • Congenital-cleft | • Ischemia |
| Chordae | • Infiltrative disorders |
| • Fused/inflammatory | Left ventricular dilatation & functional regurgitation |
| • Torn/Trauma | |
| • Degenerative | |
| • Endocarditis |
