Skip to main content

Table 2 Morphologic and hemodynamic changes in the mitral valve after PTMC

From: Echocardiographic assessment of mitral valve morphology after Percutaneous Transvenous Mitral Commissurotomy (PTMC)

  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:    <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:    <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:    <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
  1. PTMC, percutaneous transvenous mitral commissurotomy; NS, not significant