Univariate analysis of the predictive factors of late functional results after good immediate results of PMC
| Variables and subgroups | HR (95% CI) | p Value |
|---|---|---|
| Preprocedural variables | ||
| Age (per 10-year increase) | 1.15 (0.94 to 1.40) | 0.17 |
| Male sex | 1.29 (0.75 to 2.22) | 0.36 |
| NYHA functional class | 0.08 | |
| Per one class increase | 1.72 (0.94 to 3.13) | |
| Valve anatomy | 0.14 | |
| 1 | 1 | |
| 2 | 1.35 (0.91 to 2.00) | |
| 3 | 1.82 (0.82 to 4.01) | |
| Rhythm | 0.001 | |
| Sinus | 1 | |
| Atrial fibrillation | 2.16 (1.40 to 3.35) | |
| Previous commissurotomy | 0.85 | |
| Closed-heart | 1 | |
| Open-heart | 1.12 (0.64 to 1.98) | |
| PMC | 1.20 (0.65 to 2.62) | |
| Valve area, cm2 | 0.83 | |
| Per 0.1 cm2 decrease | 0.99 (0.89 to 1.10) | |
| Mean gradient, mm Hg | 0.62 | |
| Per one mm Hg increase | 0.99 (0.94 to 1.04) | |
| Mitral regurgitation | 0.07 | |
| 0 | 1 | |
| 1–2 | 1.48 (0.96 to 2.28) | |
| Per-procedural variables | ||
| Type of balloon | 0.97 | |
| Single or double balloon | 1 | |
| Inoue | 1.01 (0.66 to 1.55) | |
| Postprocedural variables | ||
| Valve area, cm2 | 0.07 | |
| Per 0.1 cm2 decrease | 1.09 (0.99 to 1.19) | |
| Mean gradient, mm Hg | 0.02 | |
| Per one mm Hg increase | 1.15 (1.02 to 1.30) | |
| Mitral regurgitation | 0.71 | |
| 0–1 | 1 | |
| 2 | 0.95 (0.73 to 1.24) | |
NYHA,New York Heart Association; PMC,percutaneous mitral commissurotomy.