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Table 3 Procedural details

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/N or n

% or Mean ± SD

n/N or n

% or Mean ± SD

p value

Mitral valve repair

378/422

89.6

354/422

83.9

0.015

AML reconstruction

60/378

15.9

75/354

21.2

0.064

PML reconstruction

280/378

74.1

244/354

68.9

0.123

Annuloplasty ringa

377/378

99.7

350/354

98.9

0.203

 Open (Cosgrove)

156/377

41.4

190/349

54.4

< 0.001

 Closed (CE Physio/Physio II)

219/377

58.1

150/349

43.0

< 0.001

 Other types

2/377

0.5

9/349

2.5

 

Resection

93/378

24.6

199/354

56.2

< 0.001

Loops

186/378

49.2

65/354

18.4

< 0.001

Cleft plicature

104/378

27.5

26/354

7.3

< 0.001

Rate of ‘short-term’ successful repairb

363/378

96.0

269/354

76.0

< 0.001

Mitral valve replacement

57/422

13.5

152/422

36.0

< 0.001

Planned

44/57

77.2

68/152

44.7

 < 0.001

MV replacement after repair failure

13/57

22.8

84/152

55.3

 < 0.001

Biological

41/57

71.9

131/152

86.2

0.016

Mechanical

16/57

28.1

21/152

13.8

Concomitant procedures

Cryoablation

143/422

33.9

80/422

19.0

< 0.001

LAA closure

84/422

19.9

167/422

39.6

< 0.001

Concomitant TVR

29/422

6.9

111/421

26.4

< 0.001

PFO closure

40/422

9.5

25/422

5.9

0.053

ASD closure

3/422

0.7

9/422

2.1

0.081

Myxom

1/422

0.2

3/422

0.7

0.624

Times

Procedure time (min)

422

192.0 (171.0–225.0)

422

185.0 (161.0–218.3)

0.002

CPB time (min)

422

133.0 (114.0–159.3)

422

101.0 (86.0–125.3)

< 0.001

X-clamp time (min)

422

80.0 (66.0–98.0)

422

71.0 (59.0–90.3)

< 0.001

Length of intubation (h)

422

10.0 (8.0–13.0)

422

12.0 (9.0–16.0)

< 0.001

Length of ICU (h)

422

26.0 (22.0–48.0)

422

24.0 (21.0–64.0)

0.421

Length of hospital stay (d)

422

10.0 (9.0–12.0)

422

11.0 (8.0–17.0)

0.001

  1. p values that are statistically significant are highlighted in bold
  2. AML anterior mitral valve leaflet, ASD atrial septal defect, CPB cardiopulmonary bypass, ICU intensive care unit, LAA left atrial appendage, MV mitral valve, PFO patent foramen ovale, PML posterior mitral valve leaflet, SD standard deviation, TVR tricuspid valve repair
  3. aFor one patient in the CS group no details for the ring were available. b Defined as MV repair without conversion to MV replacement and hospital survival