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  • Title: Long-term clinical and echocardiographic results after successful mitral balloon valvotomy and predictors of long-term outcome.
    Author: Fawzy ME, Hegazy H, Shoukri M, El Shaer F, ElDali A, Al-Amri M.
    Journal: Eur Heart J; 2005 Aug; 26(16):1647-52. PubMed ID: 15821007.
    Abstract:
    AIMS: To assess the long-term outcome of mitral balloon valvotomy (MBV) and identify predictors of restenosis- and event-free survival. METHODS AND RESULTS: We report the immediate and long-term clinical and echocardiographic results in 493 patients, mean age 31+/-11, who underwent successful MBV and were followed-up for 0.5-15 years (median 5+/-3) with clinical and echocardiographic examination. After MBV, mitral valve area increased from 0.84+/-0.2 to 1.83+/-0.53 cm(2) (P<0.0001) as measured by catheter and from 0.92+/-0.17 to 1.96+/-0.29 cm(2) as measured by two-dimensional echo. Restenosis occurred in 86/493 (17.4%) patients and it was less frequent in patients with low echo score. Actuarial freedom from restenosis at 5, 7, 10, and 13 years were 89+/-1, 81+/-2, 68+/-3, and 51+/-6%, respectively, and was significantly higher in patients with low echo score. Event-free survival (death, redo MBV, mitral valve replacement, New York Heart Association functional Class III or IV) at 5, 7, 10, and 13 years were 92+/-1, 87+/-2, 80+/-3, and 74+/-3%, respectively, and was significantly higher for patients with low echo score. Cox regression analysis identified mitral echocardiographic score (MES) >8 as predictors of restenosis (P=0.0004) and MES and age as predictors of event-free survival (P=0.0003 and 0.004, respectively). CONCLUSION: MBV has excellent long-term results for selected patients with mitral stenosis. The long-term outcome after this procedure can be predicted from baseline clinical and valvular characteristics.
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