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Table 2 MV pathology and echocardiographic parameters

From: Long-term results after mitral valve surgery using minimally invasive versus sternotomy approach: a propensity matched comparison of a large single-center series

  MIS (N = 422) CS (N = 422)
n or n/N % or Median (IQR) n or n/N % or Median (IQR) p value
Echocardiographic parameters
 LVEF (%) 422 60.0 (55.0–63.0) 422 55.0 (53.0–62.0) 0.044
 LVEDD (mm) 384 55.0 (50.3–58.0) 308 55.0 (51.0–60.0) 0.518
 LVESD (mm) 368 35.0 (31.0–40.0) 303 35.0 (31.0–41.0) 0.363
 Left atrial diameter (mm) 385 56.0 (48.0–64.0) 307 49.0 (44.0–58.0) < 0.001
 Right atrial diameter (mm) 384 47.0 (40.0–54.0) 306 41.5 (35.0–49.0) < 0.001
 Mitral opening (mm) 54 3.6 (2.8–4.6) 175 3.8 (3.1–4.8) 0.242
 PISA radius (mm) 85 1.2 (1.0–1.4) 53 1.0 (1.0–1.3) 0.199
 Vena contracta (mm) 168 7.0 (5.0–8.0) 114 6.0 (5.0–7.0) 0.002
MV pathologies
 Degenerative 399/422 94.5 393/422 93.1 0.390
 Functional 23/422 5.5 29/422 6.9 0.390
 Acute endocarditis 16/422 3.8 23/422 5.5 0.251
 Annulus dilatation 400/422 94.8 366/422 86.7 < 0.001
 Annulus calcification 29/422 6.9 43/422 10.2 0.085
 AML prolapse 87/422 20.6 99/422 23.5 0.319
 AML flail 27/422 6.4 29/422 6.9 0.782
 PML prolapse 289/422 68.5 224/422 53.1 < 0.001
 PML flail 182/422 43.1 184/422 43.6 0.890
 Chordae elongation 107/422 25.4 90/422 21.3 0.167
 Restrictive leaflet 45/422 10.7 56/422 13.3 0.243
 MV stenosis 22/422 5.2 31/422 7.3 0.202
 MV insuff. ≥ grade II 418/422 99.1 417/422 98.8 1.000
  1. p values that are statistically significant are highlighted in bold
  2. AML anterior mitral valve leaflet, LVEDD left ventricular end-diastolic pressure, LVEF left ventricular ejection fraction, LVESD left ventricular end-systolic pressure, MI myocardial infarction, MV mitral valve, PISA proximal isovelocity surface area, PML posterior mitral valve leaflet, SD standard deviation