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Table 1 Comparison of mitral annulus parameter among transthoracic and transoesophageal data sets

From: Comparison of mitral annulus geometry between patients with ischemic and non-ischemic functional mitral regurgitation: implications for transcatheter mitral valve implantation

  Transthoracic N = 15 Transoesophageal N = 15 p r
Diastolic dimension
 Annulus area (3D) (cm2) 11.5 ± 3.1 12.4 ± 3.2 0.031 0.879**
 Annulus best fit plane (cm2) 10.6 ± 3.0 11.7 ± 3.1 0.016 0.869**
 Annulus perimeter (cm) 12.1 ± 1.7 12.6 ± 1.6 0.036 0.883**
 AP diameter (cm) 3.5 ± 0.5 3.8 ± 0.5 0.012 0.799**
 ALPM diameter (cm) 3.7 ± 0.5 3.8 ± 0.5 0.342 0.840**
 Commissural diameter (cm) 3.7 ± 0.4 3.8 ± 0.5 0.231 0.777**
 Itertrigonal distance (cm) 2.8 ± 0.3 3.0 ± 0.4 0.094 0.715**
 Sphericity index 0.9 ± 0.1 1.0 ± 0.1 0.150 0.157
 Annulus height (mm) 7.3 ± 1.7 6.8 ± 1.6 0.343 0.559*
 Non planar angle 156 ± 13 152 ± 11 0.314 0.474
 Mitro-aortic angle 131 ± 8 125 ± 10 0.039 0.418
Systolic dimension
 Annulus area (3D) (cm2) 10.2 ± 2.6 11.0 ± 2.6 0.006 0.936**
 Annulus best fit plane (cm2) 9.3 ± 2.5 10.2 ± 2.5 0.001 0.959**
 Annulus perimeter (cm) 11.4 ± 1.5 11.8 ± 1.4 0.010 0.943**
 AP diameter (cm) 3.2 ± 0.4 3.4 ± 0.6 0.002 0.624* ρ
 ALPM diameter (cm) 3.6 ± 0.5 3.6 ± 0.4 0.329 0.857**
 Commissural diameter (cm) 3.5 ± 0.4 3.6 ± 0.4 0.151 0.889**
 Itertrigonal distance (cm) 2.6 ± 0.4 3.0 ± 0.4 0.000 0.830**
 Sphericity index 0.9 ± 0.1 0.9 ± 0.1 0.062 0.321ρ
 Annulus height (mm) 7.0 ± 1.3 7.0 ± 1.4 0.910 0.300
 Non planar angle (°) 153 ± 10 153 ± 9 0.893 0.240
 Aorto-mitral angle (°) 139 ± 10 129 ± 8 0.005 0.367
 Tenting height (mm) 10.3 ± 2.0 7.2 ± 3.6 0.02 - 0.108
 Tenting area (cm2) 2.3 ± 0.6 2.3 ± 0.7 0.934 0.542*
 Tenting volume (mL) 4.2 ± 1.3 4.1 ± 1.5 0.742 0.747**
  1. Data are expressed as Mean ± Standard Deviation
  2. Abbreviations: ALPM anterolateral-posteromedial, AP antero-posterior diameter
  3. * for correlation with p < 0.05; ** for correlation with p < 0.001; ρ evaluated with Sperman’s correlation