Relation between the mitral valve area before and after balloon dilatation and the commissure calcification grade
| Commissure calcification grade | |||||
|---|---|---|---|---|---|
| 0 | 1 | 2 | 3 | p Value | |
| Number of patients | 214 | 37 | 45 | 4 | |
| Valve area before dilatation (cm2) | 0.97 (0.30) | 0.83 (0.25) | 0.74 (0.23) | 0.72 (0.09) | < 0.0001 |
| Valve area after dilatation (cm2) | 1.84 (0.74) | 1.66 (0.78) | 1.40 (0.49) | 1.21 (0.42) | < 0.001 |
| Increase in valve area (cm2) | 0.87 (0.62) | 0.83 (0.67) | 0.66 (0.46) | 0.49 (0.41) | NS |
Values are mean (SD). No patient had a commissure grade of 4.