ABSTRACT
A variety of malformations result in congenital MS either in isolation or in association with other cardiac anomalies. Clinically significant abnormalities are rare and affect 0.4% patients with CHD.1 , 2 Minor mitral valve abnormalities, however, are not uncommon with 0.5 to 1% of healthy school-age children having altered morphology or function. The discrepancy in the prevalence of mitral valve anomalies is possibly related to variable reporting of milder forms. Combined regurgitation and stenosis is more common than isolated regurgitation or stenosis. A detailed assessment of morphology and hemodynamic alteration by echocardiography is crucial to decide the timing and management strategy. Surgical repair is preferred. Mitral valve replacement should be performed only if valve repair is not possible.
