60 year old Hispanic man who presented to the hospital with complaints of shortness of breath. A few months earlier, a midsystolic click and a late systolic murmur III/VI, radiating to the axilla, were discovered on a routine physical exam. An echocardiogram was done revealing significant mitral regurgitation. Catheterization showed severe mitral valve regurgitation with flaring posterior leaflet , normal ejection fraction and 50 % right coronary artery stenosis. Mitral valvuloplasty was performed with the post-surgical complication of atrial fibrillation and flutter for which the patient was started on the anticoagulant coumadin. คุณหมอคะสรุปแล้วคนไข้คนนี้เป็นโรคอะไรคะ ช่วยหนูหน่อยT_T