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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