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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