Most common cause of mitral stenosis is

Refer robbins 9/e 554 Rheumatic hea disease (RHD) is damage to one or more hea valves that remains after an episode of acute rheumatic fever (ARF) is resolved. It is caused by an episode or recurrent episodes of ARF, where the hea has become inflamed. The hea valves can remain stretched and/or scarred, and normal blood flow through damaged valves is interrupted. Blood may flow backward through stretched valves that do not close properly, or may be blocked due to scarred valves not opening properly. When the hea is damaged in this way, the hea valves are unable to function adequately, and hea surgery may be required. Untreated, RHD causes hea failure and those affected are at risk of arrhythmias, stroke, endocarditis and complications of pregnancy. These conditions cause progressive disability, reduce quality of life and can cause premature death in young adults. Hea surgery can manage some of these problems and prolong life but does not cure RHD.