Table 3 Comparison of operative variables.

From: Surgical outcomes of acute type A aortic dissection in dialysis patients: lessons learned from a single-center’s experience

Variables

Total (n = 882)

Overall cohort

PSM Cohort

Non-dialysis (n = 866)

Dialysis (n = 16)

P Value

Non-dialysis (n = 16)

Dialysis (n = 16)

P Value

Intro-operative variables

CABG (%)

51 (5.8)

50 (5.8)

1 (6.3)

1.000

2 (12.5)

1 (6.3)

1.000

CPB time (min)

232.3 ± 67.9

232.3 ± 67.6

235.8 ± 85.1

0.984

272.3 ± 95.3

235.8 ± 85.1

0.291

Aortic cross-clamp time (min)

154.0 (124.0, 194.0)

154.0 (124.0, 194.0)

138.0 (106.8, 194.0)

0.374

171.5 ± 60.6

156.0 ± 63.9

0.366

DHCA time (min)

29.5 ± 12.5

29.5 ± 12.5

28.2 ± 11.9

0.710

24.3 ± 12.2

28.2 ± 11.9

0.335

Cannulation

Axillary artery (%)

171 (19.4)

166 (19.2)

5 (31.3)

0.213

6 (37.5)

5 (31.3)

0.710

Femoral artery (%)

230 (26.1)

225 (26.0)

5 (31.3)

0.578

5 (31.3)

5 (31.3)

1.000

Axillary + femoral artery (%)

442 (50.1)

436 (50.3)

6 (37.5)

0.309

5 (31.3)

6 (37.5)

1.000

Root procedure

Bentall (%)

202 (22.9)

201 (23.2)

1 (6.3)

0.139

6 (37.5)

1 (6.3)

0.083

Root reconstruction (%)

641 (72.7)

626 (72.3)

15 (93.8)

0.085

10 (62.5)

15 (93.8)

0.083

Valve sparing root replacement (%)

35 (4.0)

35 (4.0)

0 (0)

1.000

3 (18.8)

0 (0)

0.248

Distal surgical technique

Hemi-arch replacement (%)

179 (20.3)

175 (20.2)

4 (25.0)

0.546

7 (43.8)

4 (25.0)

0.264

Total arch + frozen elephant trunk (%)

422 (47.8)

415 (47.9)

7 (43.8)

0.741

10 (62.5)

7 (43.8)

0.288

Arch fenestrated stent graft (%)

268 (30.4)

263 (30.4)

5 (31.3)

1.000

10 (62.5)

5 (31.3)

0.288

  1. Values for categorial variables are given as count (percentage); values for continuous variables are given as median (interquartile range) or mean ± standard deviation.
  2. MVR mitral valve replacement, MVP mitral valvuloplasty, TVP tricuspid valvuloplasty, CABG coronary artery bypass graft, CPB cardiopulmonary bypass, DHCA deep hypothermic circulatory arrest, PSM propensity score matching.