| Before PTMC | After PTMC | p Value |
---|---|---|---|
Anterior leaflet excursion (cm) | 1.8 ± 0.5 | 2.1 ± 0.5 | <0.0001 |
Posterior leaflet excursion (cm) | 1.4 ± 0.4 | 1.6 ± 0.5 | <0.0001 |
Subvalvular splitting area (cm2) | 0.9 ± 0.3 | 1.4 ± 0.4 | <0.0001 |
Anterior commissural splitting score: | Â | Â | <0.0001 |
   - No splitting (0) | 286 (98.3%) | 10 (3.4%) |  |
   - Partial splitting (0.5) | 5 (1.7%) | 80 (27.5%) |  |
   - Complete splitting (1) | 0 | 201 (69.1%) |  |
Posterior commissural splitting score: | Â | Â | <0.0001 |
   - No splitting (0) | 272 (93.5%) | 21 (7.2%) |  |
   - Partial splitting (0.5) | 19 (6.5%) | 86 (29.6) |  |
   - Complete splitting (1) | 0 | 184 (63.2%) |  |
Total commissural splitting score: | Â | Â | <0.0001 |
   - 0 | 269 (92.4%) | 0 |  |
   - 0.5 | 20 (6.9%) | 12 (4.1%) |  |
   - 1 | 2 (0.7%) | 36 (12.4%) |  |
   - 1.5 | 0 | 112 (38.5%) |  |
   - 2 | 0 | 131 (45%) |  |
Mitral valve annular diameter (cm) | 3.7 ± 0.6 | 3.6 ± 0.6 | NS |
Mitral valve area (cm2) | 0.9 ± 0.2 | 2.0 ± 0.4 | <0.0001 |
Transmitral pressure gradient (mmHg) | 17 ± 7 | 5 ± 3 | <0.0001 |
Left atrial diameter (cm) | 5.2 ± 0.9 | 4.5 ± 0.8 | <0.0001 |
Left ventricle end-diastolic diameter (cm) | 4.3 ± 0.6 | 4.4 ± 0.6 | <0.0001 |
Left ventricle end-systolic diameter (cm) | 3.0 ± 0.5 | 2.9 ± 0.5 | <0.0001 |
Ejection fraction (%) | 65 ± 10 | 70 ± 8 | <0.0001 |