What is the treatment of rheumatic murmur and if person go for surgery how many chances are there to have a successful surgery?

Murmur : First of all not all rheumatic murmurs require surgery it depends on the severity of the valvular dysfunction wheteher it be a stenotic(stuck ) valve or a leaky one . And second if surgery is warranted based on the above and the appropriate clinical setting thet are successful provided you see a surgeon with alot of experience with valve disease.

Need more info: Rheumatic murmur is too broad a topic. An echocardiogram and clinical evaluation are neeed along with symptoms and age. That said, surgery is generally very successful when needed. Generally these can be followed and are not an issu, but over time, ie, years and decades they can be an issue.