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Table 1 Preoperative and intraoperative variables of patients

From: Low postoperative blood platelet count may be a risk factor for 3-year mortality in patients with acute type A aortic dissection

 

Overall

(n = 495)

Survival

(n = 452)

Death

(n = 43)

P value

Gender, male

385 (77.78%)

357 (78.98%)

28 (65.12%)

0.037

Age, year

47.5 ± 10.7

47.1 ± 10.6

51.465 ± 10.119

0.011

BMI, kg/m2

25.57 ± 3.951

25.64 ± 4.026

24.86 ± 3.000

0.300

Time from onset to admission, h

3 [1, 10]

3 [1, 10]

2 [1, 7]

0.369

Hypertension

364 (73.54%)

335 (74.12%)

29 (67.44%)

0.343

Diabetes

10 (2.02%)

10 (2.21%)

0 (0%)

> 0.999

Peripheral vascular disease

9 (1.82%)

9 (1.99%)

0 (0%)

> 0.999

COPD

2 (0.40%)

2 (0.44%)

0 (0%)

> 0.999

Chronic kidney disease

24 (4.85%)

21 (4.65%)

3 (6.98%)

0.454*

Preoperative CNS disease

22 (4.44%)

21 (4.65%)

1 (2.33%)

0.710*

Hyperlipidemia

80 (16.16%)

76 (16.81%)

4 (9.3%)

0.201

The history of smoking

210 (42.42%)

192 (42.48%)

18 (41.86%)

0.938

The history of drinking

25 (5.05%)

23 (5.09%)

2 (4.65%)

> 0.999

History of cardiovascular surgery

35 (7.07%)

30 (6.64%)

5 (11.63%)

0.214*

Preoperative pain

459 (92.73%)

417 (92.26%)

42 (97.67%)

0.350*

NYHA grading:

    

 I

37 (7.47%)

33 (7.30%)

4 (9.3%)

0.437*

 II

396 (80%)

364 (80.52%)

32 (74.42%)

 III

57 (11.52%)

51 (11.28%)

6 (13.95%)

 IV

5 (1.01%)

4 (0.88%)

1 (2.33%)

MBP, mmHg

106 [96, 116.3]

106.7 [96.67, 116.7]

100.7 [93.33, 114]

0.091

LVEF, %

60 [58, 62]

60 [58, 62]

60 [59, 61]

0.8531

Left ventricular diameter, mm

51 [47, 56]

51 [47, 57]

49 [44, 55]

0.082

Pericardial effusion

69 (13.94%)

62 (13.72%)

7 (16.28%)

0.643

Preoperative WBC count, 109/L

10.90 [8.220, 13.61]

10.83 [8.165, 13.58]

11.39 [8.490, 13.69]

0.448

Preoperative PLT count, 109/L

169 [134, 220]

171 [137, 223]

147 [114, 176]

< 0.001

Preoperative Hb count, g/L

132 [116, 144]

132 [116, 144]

128 [117, 136]

0.165

Emergency operation

285 (57.58%)

258 (57.08%)

27 (62.79%)

0.469

Concurrent CABG

48 (9.7%)

42 (9.29%)

6 (13.95%)

0.289*

Concurrent Aortic root surgery

148 (29.9%)

135 (29.87%)

13 (30.23%)

0.960

Concurrent mitral valve plastic or replacement

8 (1.62%)

8 (1.77%)

0 (0.00%)

> 0.999

Blood loss, mL

900[600, 1200]

900 [600, 1200]

1000 [600, 1200]

0.311

Intraoperative red blood cell infusion, unit

0 [0, 0]

0 [0, 0]

0 [0, 2]

0.003

Intraoperative red blood cell infusion rate

56 (11.31%)

47 (10.40%)

9 (20.93%)

0.045

Frozen plasma infusion, mL

400 [0, 600]

400 [0, 600]

400 [0, 800]

0.093

Platelet infusion, unit

2 [1, 2]

2 [1, 2]

2 [2]

0.253

Lowest temperature in CPB

18.3 [17.7, 20.2]

18.3 [17.7, 20.25]

18.3 [17.7, 19.6]

0.719

Temperature when CPB is stopped

36.9 [36.6, 37.1]

36.9 [36.6, 37.1]

36.9 [36.6, 37.1]

0.514

Cardiopulmonary bypass time, min

186 [158, 217]

186 [155, 216]

194 [171, 261]

0.022

Clamping time, min

22 [19, 26]

22 [19, 25]

22 [20, 27]

0.273

  1. Data are presented as mean ± SD, number (%), or median [interquartile range]
  2. BMI, body mass index; COPD, chronic obstructive pulmonary disease; CNS, central nervous system; NYHA, New York Heart Association; MBP, mean blood pressure; LVEF, left ventricular ejection fraction; WBC, white blood cell; PLT, platelet; Hb, hemoglobin; CABG, coronary artery bypass grafting
  3. *In these comparisons, Fisher's exact test was used