How could mitral valve stenosis be treated?

If severe, surgery: True, classical mitral stenosis is caused by rheumatic fever. Some types can be very aggressive causing compromised cardiac output & symptoms of marked shortness of breath & fatigue. There are no medical interventions that treat mitral stenosis. This leaves, when the time is appropriate, surgical repair or replacement. Balloon based interventions have not proven to be satisfactorily effective.

Surgery: If you have symptomatic mitral stenosis, you need a valvuloplasty (through a catheter) or surgical commissurotomy or valve replacement depending on your age and the condition of your valve.