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The Journal of Thoracic and Cardiovascular Surgery, Vol 86, 553-561, Copyright © 1983 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Mitral reconstructive operations. A series of 130 consecutive cases

A Lessana, T Tran Viet, F Ades, SM Kara, A Ameur, A Ruffenach, F Guerin, F Herreman and M Degeorges

Between January, 1975, and January, 1982, 130 patients underwent mitral valvuloplasty for pure or predominant mitral insufficiency. Mean age at operation was 30 +/- 17 years. Twenty-five patients were under 15 years of age. Mitral insufficiency was mainly (112/130) due to rheumatic disease. Fifty-nine patients (45.4%) had another diseased valve which necessitated a surgical correction (tricuspid in 36 and aortic in 23). Surgical technique for mitral valvuloplasty varied according to the lesions. Three patients died in the first month after operation (2.3%). Five patients are lost to follow-up. The mean follow-up period for the 122 remaining patients is 38 +/- 27 months. Seven patients required reoperation and three of them died. An additional patient died without reoperation. Therefore, the late mortality was 3.1% (4/122). Almost all (116/118) of the remaining patients are in Class I (105) or II (11) of the New York Heart Association. Mean cardiothoracic ratio decreased from 60.6% +/- 7.7% preoperatively to 53.7% +/- 6.2% postoperatively (p less than 0.001). Thromboembolic episodes were noted in four patients, all of them in atrial fibrillation. Actuarial curves including hospital mortality showed a 92.0% survival rate at 7 years for the overall series (1.0% +/- 0.5%/patient-year), 93.7% +/- 4.9% at 7 years for isolated mitral reconstruction and 89.9% +/- 5.6% for mitral-tricuspid valvuloplasty at 5 years. The embolism-free rate at 7 years was 91.2%, with a rate of thromboembolic episodes of 1.0 +/- 0.5%/patient-year. Eighty-eight percent were free of reoperation at 7 years, with a rate of reoperation of 1.7 +/- 0.7%/patient-year. This system of mitral repair can provide stable functional results, low surgical and late mortality, and an acceptable rate of reoperation.

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