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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