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Table 2 Operative data and outcome before and after propensity score matching

From: Independent risk factors and the long-term outcomes for postoperative continuous renal replacement treatment in patients who underwent emergency surgery for type a acute aortic dissection

Characteristics

Before Matching

After Matching

Control(n = 601)

CRRT(n = 111)

P Value

Control(n = 29)

CRRT(n = 29)

P Value

Operative procedures

 Total arch replacement (%)

309(51.4)

62(55.9)

0.389

16(55.2)

20(69.0)

0.279

 CABG/MVR/MVP/TVP (%)

51(8.5)

17(15.3)

0.024

5(17.2)

4(13.8)

1.000

 Aortic valve (%)

185(30.8)

31(27.9)

0.548

9(31.0)

7(24.1)

0.557

CPB-related profiles

 CPB time (min)

235.5 ± 64.1

273.4 ± 80.6

< 0.001

236.0 ± 48.8

279.3 ± 59.8

0.004

 Extracorporeal circulation assist time (min)

54.3 ± 31.0

65.9 ± 40.4

0.001

50.3 ± 30.7

60.4 ± 24.5

0.174

 Aortic cross-clamp time (min)

165.3 ± 55.1

186.0 ± 70.5

0.005

174.6 ± 48.2

191.8 ± 50.9

0.192

 DHCA time (min)

28.0 ± 12.7

30.2 ± 50.1

0.117

26.8 ± 10.4

31.3 ± 13.9

0.173

Complications and short-time outcomes

 Drainage volume 24 h after surgery (ml)

695.0 ± 604.1

1091.0 ± 1013.9

0.001

971.6 ± 1104.1

1011.5 ± 681.9

0.873

 Ventilation time (hour)

32.0 ± 50.1

56.8 ± 61.8

0.009

37.6 ± 41.6

79.9 ± 81.9

0.058

 30-day mortality (%)

40(6.7)

50(45.0)

< 0.001

3(10.3)

13(44.8)

0.003

 ICU Stay time (day)

6.5 ± 11.5

9.4 ± 6.6

0.020

5.9 ± 5.7

9.3 ± 6.9

0.055

 Hospital stay time (day)

22.3 ± 11.6

22.5 ± 17.0

0.892

19.4 ± 10.0

21.3 ± 14.3

0.560

  1. Data presented as n (%); mean ± standard deviation
  2. Abbreviations: CABG coronary artery bypass graft, MVR mitral valve replacement, MVP mitral valvuloplasty, TVP tricuspid valvuloplasty, CPB cardiopulmonary bypass, DHCA deep hypothermic circulatory arrest, ICU intensive care unit