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Table 1 Echocardiographic assessment of mitral valve apparatus morphology in patients undergoing percutaneous transvenous mitral commissurotomy (PTMC)

From: Mitral annular calcification predicts immediate results of percutaneous transvenous mitral commissurotomy

 

Total

(n = 87)

Annulus calcification

  

Yes

(n = 17)

No

(n = 70)

P value

Age

43.3 ± 12.3

46.4 ± 12.1

42.5 ± 12.4

0.246

Male gender

25(28.7)

7(41.2)

18(25.7)

0.206

AF rhythm

23(27.7)

5(31.3)

18(26.9)

0.725

Optimal PTMC result

55(63.2)

5(29.4)

50(71.4)

0.002

Unilateral commissure calcification

13(14.9)

6(10.9)

7(21.9)

0.167

Mitral leaflets morphological score

    

Total

8.1 ± 1.2

8.8 ± 1.2

8.0 ± 1.1

0.013

Thickness

2.1 ± 0.4

2.3 ± 0.5

2.1 ± 0.4

0.089

Calcification

1.5 ± 0.6

1.8 ± 0.7

1.4 ± 0.6

0.049

Subvalvular thickening

2.4 ± 0.6

2.4 ± 0.5

2.4 ± 0.6

0.685

Mobility

2.1 ± 0.3

2.2 ± 0.3

2.1 ± 0.3

0.024

Pre-PTMC echocardiographic measurements

    

Pre-PTMC MVA

1.0 ± 0.2

0.9 ± 0.2

1.0 ± 0.2

0.533

Mitral regurgitation (MR) grade

0.8 ± 0.6

0.8 ± 0.5

0.8 ± 0.6

0.803

Left ventricle ejection fraction (%)

54.5 ± 4.5

54.8 ± 6.7

54.5 ± 3.9

0.787

Mitral valve peak gradient (MVPG)(mmHg)

19.9 ± 7.7

22.2 ± 7.9

19.4 ± 7.6

0.169

Mitral valve peak gradient (MVMG)(mmHg)

12.3 ± 6.0

13.8 ± 5.8

11.9 ± 6.0

0.253

Systolic left ventricle dimension (sLVD)(mm)

31.9 ± 6.5

31.8 ± 6.9

31.9 ± 6.4

0.962

Diastolic left ventricle dimension (dLVD)(mm)

45.2 ± 6.1

47.4 ± 1.1

45.8 ± 4.6

0.121

Left atrium size (LAs) (mm)

45.4 ± 7.3

43.5 ± 7.6

45.8 ± 7.3

0.256

Pulmonary artery systolic pressure (PAPs) (mmHg)

46.0 ± 12.5

49.8 ± 9.3

45.0 ± 13.1

0.174

Post-PTMC echocardiographic measurements

    

Post-PTMC MVA (cm2)

1.6 ± 0.4***

1.4 ± 0.4

1.6 ± 0.4

0.038

Mitral regurgitation (MR) grade

1.0 ± 0.7

0.8 ± 0.5

1.0 ± 0.7

0.350

Left ventricle ejection fraction (%)

54.8 ± 7.6

55.6 ± 6.8

54.6 ± 7.8

0.635

Mitral valve peak gradient (MVPG)(mmHg)

11.0 ± 5.2***

10.9 ± 4.6

11.1 ± 5.4

0.903

Mitral valve peak gradient (MVPG)(mmHg)

6.0 ± 3.1***

6.2 ± 2.2

6.0 ± 3.3

0.805

Systolic left ventricle dimension (sLVD)(mm)

30.0 ± 6.4

31.5 ± 6.9

29.6 ± 6.3

0.292

Diastolic left ventricle dimension (dLVD)(mm)

45.6 ± 5.7

46.5 ± 5.3

45.4 ± 5.8

0.509

Left atrium size (LAs) (mm)

45.1 ± 9.2

45.5 ± 13.8

45.0 ± 7.9

0.846

Pulmonary artery systolic pressure (PAPs) (mmHg)

38.9 ± 13.0**

34.9 ± 9.2

40.1 ± 13.8

0.228

  1. MVA: mitral valve area,**: p value < 0.01 and ***: p value < 0.001 in comparison with corresponding variable assessed prior to the PTMC