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What are the important cause of mitral regurgitation ?

Mitral regurgitation can occur secondary to lesion of mitral annulus, chordac, papillary muscle, left ventricular lesions
Caspal lesions
  • Rheumatoid heart disease
  • Mild valve pro-lapse
  • Infective endocarditis
  • Trauma
Annular lesions 
  • Dilatation of annulus – Dilated cardiomyopathy ,Ischemic heart disease
  • Annular calcification
Chordal lesions
  • Mitral valve prolapse
  • Infective endocarditis
  • Trauma
Papillary muscle dysfunction
  • Myocardial infarction
  • Angina
Left ventricular lesions
  • Aneurysm
  • Hypertrophic cardiomyopathy
Connective tissue diseases associated with mitral regurgitations are 
  • Marfan syndrome
  • Ehler Danlos syndrome
  • Rheumatoid arthritis
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