From January 1980 to december 1992, 301 patients underwent mitral valve repair in Heart Institute of HCFMUSP. Mean age of the patients was 37.96 years, with standard deviation of 21.4 years and 151 (50.2%) were males. One hundred and twenty eight (42.52) patients presented symptons of rheumatic fever disease, 78 (25.91%) had degenerative valve disease, 21 (6.97%) were congenital, 18 (5.98%) were ischemic, 9 (2,99) had endomyocardial fibrosis, 8 (2.65%) had bacterial endocardis, 5 (1.66%) had chronic valvulitis, and 34 (11.29%) had no defined ethiology. Two hundred and four (67.8%) patients had mitral insufficiency and 97 (32.2%) double mitral lesion. Associated procedures were performed in 45% of the patients, the most frequent was aortic valve replacement in 41 (13%) patients. Merendino type annuloplasty was performed in 97 (30.99%) patients. Carpentier ring annuloplasty in 93 (29.71 %), and posterior sling in 76 (24.28%) patients. There were 12 operative deaths (3.9%). Three (0.9%) patients were reoperated upon in the immediate postoperative period due to valve disfunction. Linearilized rates of thromboembolism, late death, re-repair, and valve replacement were 0.2%; 0.5%; 1.0%; and 1.1% per patient/years, respectively. The actuarial survival rate at 12 years was 83.6% and the actuarial freedom from reoperation was 83%. Seventy nine percent of the patients were in NYHA class I at the last follow-up (evolution time was 10077 months/patients). We concluded that patients submitted to mitral valve repair presented satisfactory clinical evoluation.
heart valves, mitral; heart valves, mitral