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Table 2 Intraoperative data

From: Mid-term results of mitral valve repair using flexible bands versus complete rings in patients with degenerative mitral valve disease: a prospective, randomized study

 

SR Group,

n = 85

FB Group,

n = 86

P value

Approach:

 Conventional, n (%)

60 (70.6)

59 (65.1)

0.778

 Minimally invasive, n (%)

25 (29.4)

27 (31.4)

0.778

CPB time, min

140 (110;179.5)

160 (122;206)

0.091

Cross clamp time, min:

 Conventional

92 (73;117)

101 (79;125)

0.230

 Minimally invasive

116 (101;129)

123 (106;156)

0.171

Mitral valve analyze and intervention in certain patients

 А1 prolapse, n (%)

9 (10.6)

11 (12.8)

0.654

 А2 prolapse, n (%)

23 (27.1)

33 (38.4)

0.115

 А3 prolapse, n (%)

13 (15.3)

19 (22.1)

0.254

 P1 prolapse, n (%)

6 (7.1)

12 (13.9)

0.142

 P2 prolapse, n (%)

59 (69.4)

68 (79.1)

0.119

 P3 prolapse, n (%)

17 (20.0)

27 (31.4)

0.088

 AMVL prolapse, n (%)

31 (36.5)

40 (46.5)

0.183

 PMVL prolapse, n (%)

73 (85.9)

74 (86.1)

0.975

 DMVL prolapse, n (%)

19 (22.4)

28 (32.5)

0.135

 Chordae rupture, n (%)

64 (75.3)

53 (61.6)

0.055

 AMVL resection, n (%)

1 (1.2)

4 (4.7)

0.178

 PMVL resection, n (%)

37 (43.5)

49 (56.9)

0.079

 AMVL neochordae, n (%)

22 (25.9)

29 (33.7)

0.263

 PMVL neochordae, n (%)

30 (35.3)

27 (31.4)

0.589

 Ring size, mm

32 (30;32)

34 (30;34)

0.456

Concomitant procedure

 Maze IV procedure, n (%)

18 (21.2)

14 (16.3)

0.412

 CABG, n (%)

10 (11.8)

4 (4.7)

0.090

 TV repair, n (%)

32 (37.6)

24 (27.9)

0.175

 SAM-syndrome, n (%)

0

1 (1.2)

0.319

Intraoperative TEE

 Depth of coaptation, mm

9 (7;11)

6 (5;8)

0.006

 Peak MV gradient, mm Hg

8.0 (6.7;10.9)

6.4 (4;9)

<0.001

 Mean MV gradient, mm Hg

3 (2.4;4)

2 (2;3.9)

<0.001

  1. SR semirigid ring, FB flexile band, AMVL anterior mitral valve leaflet, PMVL posterior mitral valve leaflet, DMVL prolapse dual (anterior and posterior) mitral valve leaflet prolapse, CABG coronary artery bypass grafting, TV tricuspid valve, CPB cardiopulmonary bypass, TEE transesophageal echocardiography