Rheumatic mitral regurgitation

Rheumatic mitral valve insufficiency is caused by rheumatic fever invading the mitral valve. The most common lesions are thickening of the fibrosis of the valve, fusion of the junction, and narrowing of the valve mouth, forming a simple mitral valve stenosis. Mitral valve stenosis is associated with insufficiency in about one-third of cases. Simple mitral regurgitation is rare, accounting for only about 5% of rheumatic mitral valve lesions.

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