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  • Title: Twenty year follow-up after successful percutaneous balloon mitral valvuloplasty in a large contemporary series of patients with mitral stenosis.
    Author: Tomai F, Gaspardone A, Versaci F, Ghini AS, Altamura L, De Luca L, Gioffrè G, Gioffrè PA.
    Journal: Int J Cardiol; 2014 Dec 20; 177(3):881-5. PubMed ID: 25453406.
    Abstract:
    BACKGROUND: Percutaneous balloon mitral valvuloplasty (PMV) is currently considered the standard of care for suitable patients with rheumatic mitral stenosis. We sought to assess very long-term outcome after PMV. METHODS: Between 1991 and 2010, 482 consecutive patients underwent successful PMV in a single center. Procedural success was defined as post-procedural valve area ≥ 1.5 cm(2) and regurgitation moderate or less, without in-hospital major adverse cardiac and cerebro-vascular events. The primary endpoint was 20-year incidence of major adverse cardiac events (MACE), including cardiovascular death and need for mitral surgery or repeat PMV. RESULTS: Long-term follow-up (mean 11.6 ± 4.9 years; range 0.5 to 20) was completed in 441 (91.5%) patients. The incidence of the primary endpoint was 41.9% (95% confidence interval [CI]: 37.3 to 46.7%). The rate of cardiovascular death, need for mitral surgery or repeat PMV was 9.1% (95% CI: 6.6 to 12.1), 27% (95% CI: 22.9 to 31.4), and 5.9% (95% CI: 3.9 to 8.5), respectively. Cumulative MACE-free survival at 20 years was 35.9 ± 4.7%. At multivariate analysis, male gender (hazard ratio [HR]: 1.99; 95% CI: 1.4-2.8, p < 0.001), echocardiographic score > 8 (HR: 2.19; 95% CI: 1.6-2.9, p < 0.001), atrial fibrillation (HR: 1.54; 95% CI: 1.2-2.1, p = 0.003) and valve area ≤ 1.75 cm(2) after PMV (HR: 3.1; 95% CI: 2.3-4.2, p < 0.001) were identified as independent predictors of the primary endpoint. CONCLUSIONS: Up to 20 years after successful PMV, a sizeable proportion of patients still exhibit a good clinical result.
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