Table 1 Preoperative data of the two patient groups

From: Preoperative blood urea nitrogen-to-serum albumin ratio for prediction of in-hospital mortality in patients who underwent emergency surgery for acute type A aortic dissection

Variables

Group survivor (n = 505)

Group non-survivor (n = 52)

P value

Male, n (%)

377 (74.7)

38 (73.1)

0.804

Age, n (year)

52.0 (45.0, 61.0)

59.0 (51.0, 64.0)

<0.001

Body mass index (Kg/M2)

25.7 ± 4.0

26.3 ± 4.2

0.289

BUN (mmol/L)

5.20 (4.3, 7.00)

8.65 (585, 11.50)

<0.001

SA (g/L)

38.0 ± 4.0

35.8 ± 4.2

<0.001

BA-R (mmol/g)

0.14(0.11, 0.19)

0.27(0.18, 0.45)

<0.001

Serum creatinine (umol/L)

77.0 (65.0, 108.0)

94.0 (71.5, 134.3)

0.018

D-Dimer(ug/mL)

7.55 (3.46, 18.40)

17.70 (9.02, 20.0)

<0.001

Leukocyte (10ˆ9/L)

12.1 (9.3, 14.3)

12.4 (9.2, 15.7)

0.415

Platelet (10ˆ9/L)

199.1 ± 72.9

203.2 ± 70.1

0.701

Prothrombin time(sec)

13.8 (13.2, 14.6)

13.9 (13.4, 15.2)

0.537

Heamoglobin (g/L)

129.7 ± 21.1

127.4 ± 19.6

0.449

Troponin-I (ug/L)

0.6 ± 3.0

0.7 ± 2.3

0.765

NT-ProBNP (pg/mL)

278 (150.5, 591.0)

288 (163.0, 847.0)

0.523

Lactic acid (mmol/L)

1.59 ± 0.89

1.94 ± 1.35

0.012

Alanine aminotransferase (IU/L)

26.0 (18.0, 43.0)

28.0 (21.0, 53.5)

0.447

Aspartate aminotransferase (IU/L)

27.0 (19.0, 46.0)

28.0 (19.5, 67.0)

0.431

LVEF (%)

63.6 ± 6.9

62.6 ± 6.1

0.312

Hypertension, n (%)

388 (76.8)

42 (88.8)

0.519

Diabetes, n (%)

38 (7.5)

2 (3.8)

0.486

Coronary heart disease, n (%)

45 (89.1)

6 (11.5)

0.532

COPD, n (%)

15 (3.0)

2 (3.8)

0.941

Acute renal insufficiency

37 (7.3)

7 (13.5)

0.118

Myocardial ischemia

14 (2.8)

4 (7.7)

0.134

Cerebral ischemia

12 (2.4)

4 (7.7)

0.080

AR(Medium or above), n (%)

60 (11.9)

7 (13.5)

0.739

  1. BUN blood urea nitrogen, SA serum albumin, BA-R blood urea nitrogen-to-serum albumin ratio, LVEF left ventricular ejection fraction, COPD chronic obstructive pulmonary disease, AR aortic regurgitation, CPB cardiopulmonary bypass
  2. Continuous normally distributed variables were expressed as mean( ± standard deviation) and not-normally distributed variables as medians(interquartile range). Counts are expressed as percentages. χ2 test for categorical variables and wilcoxon rank sum test for continuous variables
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