My self Hemangini b. shah, age 52..my Echocardiography report is as under...both mitral leaflets show rheumatic affection.anterior mitral leaftlet is thickened, fibrotic,pliable and show diastolic doming.posterior mitrl leaftlet is thickened & almost fixed.both the commisures are fused.  aortic valve is trileaflet and normal LA is dilated.LV systolic function is normal at rest.RVOT & MPA are dilated. pulmonary valve show e/o pul.hypertension.No e/o clot /mass seen.=> AF eith fast rate noted.
It seems that you have got an irregular heart rhythm, likely secondary to a rheumatic valvular (mitral) disease. It is not clear which should be the optimal heart rate (speed of the heart for minute) for patients with this irregular rhythm called atrial fibrillation, however, you should have been prescribed some tablets that make the blood thinner to decrease the risk of having clots and their complications. I hope this helps.