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Table 1 The baseline preoperative characteristics of uTBAD patients receiving TEVAR grouped by NLR value < 4.8 and ≥ 4.8

From: Elevated preoperative neutrophil‐to‐lymphocyte ratio predicts early adverse outcomes in uncomplicated type B aortic dissection undergoing TEVAR

Variable

Overall

Low NLR

(< 4.8)

High NLR

(≥ 4.8)

Standardized difference

value

N (%)

216

112 (51.9 %)

104 (48.1 %)

  

Age (year)

60 (48–68)

62 (50–70)

54 (46–66)

0.32

0.018

Age group (year)

   

0.27

0.146

 < 40

20 (9.3 %)

10 (8.9 %)

10 (9.6 %)

  

 40–60

88 (40.7 %)

39 (34.8 %)

49 (47.1 %)

  

 ≥ 60

108 (50.0 %)

63 (56.3 %)

45 (43.3 %)

  

Male

170 (78.7 %)

83 (74.1 %)

87 (83.7 %)

0.24

0.087

BMI

24.9 (3.9)

24.9 (4.0)

25.0 (3.8)

0.04

0.764

Smoking

60 (27.8 %)

30 (26.8 %)

30 (28.9 %)

0.05

0.736

Drinking

39 (18.1 %)

20 (17.9 %)

19 (18.3 %)

0.01

0.937

Hypertension

143 (66.2 %)

73 (65.2 %)

70 (67.3 %)

0.05

0.741

Diabetes

10 (4.6 %)

5 (4.5 %)

5 (4.8 %)

0.02

0.904

COPD

8 (3.7 %)

3 (2.7 %)

5 (4.8 %)

0.11

0.408

Renal insufficiency

11 (5.1 %)

8 (7.1 %)

3 (2.9 %)

0.2

0.155

Coronary artery diseases

14 (6.5 %)

9 (8.0 %)

5 (4.8 %)

0.13

0.336

Stroke

10 (4.6 %)

4 (3.6 %)

6 (5.8 %)

0.10

0.442

Dissection morphology

   

0.04

0.747

 Confined in thoracic aorta

56 (25.9 %)

28 (25.0 %)

28 (26.9 %)

  

 Extended to abdominal aorta

160 (74.1 %)

84 (75.0 %)

76 (73.1 %)

  

False lumen patency

   

0.38

0.021

 Patent false lumen

156 (72.2 %)

90 (80.4 %)

66 (63.5 %)

  

 Partial thrombosis

50 (23.2 %)

18 (16.1 %)

32 (30.8 %)

  

 Complete thrombosis

10 (4.6 %)

4 (3.6 %)

6 (5.8 %)

  

Symptoms on admission

   

0.09

0.81

 Chest/back pain

156 (72.2 %)

79 (70.6 %)

77 (74.0 %)

  

 Abdominal pain

52 (24.1 %)

29 (25.9 %)

23 (22.1 %)

  

 Other symptoms

8 (3.7 %)

4 (3.6 %)

4 (3.9 %)

  

Location of the primary entry tear

   

0.16

0.231

 > 2 cm from the LSCA

169 (78.2 %)

84 (75.0 %)

85 (81.7 %)

  

 ≤ 2 cm from the LSCA

47 (21.8 %)

28 (25.0 %)

19 (18.3 %)

  

Maximum diameter of thoracic aorta (mm)

40.7

(35.2–44.3)

39.7 (35.0–44.1)

40.8 (36.5–44.3)

0.09

0.517

Maximum diameter of abdominal aorta (mm)

28.7

(26.6–32.9)

28.5 (26.5–32.4)

29.4 (26.6–32.9)

0.16

0.248

SBP on admission (mmHg)

143 (132–154)

140 (130–150)

148 (136–157)

0.37

0.007

DBP on admission (mmHg)

80 (75–89)

82 (75–89)

80 (75–88)

0.04

0.77

Temperature preoperatively (℃)

36.6

(36.4–36.8)

36.6

(36.4–36.9)

36.6

(36.4–36.8)

0.24

0.077

Creatinine preoperatively (µmol/l)

79 (64–91)

76 (59–86)

81 (65–95)

0.29

0.036

Platelet count preoperatively (×109/l)

200 (152–272)

221 (169–302)

170 (149–225)

0.42

0.003

  1. Categorical variables are reported as frequency and percentage; continuous variables are reported as median (25th–75th percentile)
  2. uTBAD uncomplicated type B aortic dissection, TEVAR thoracic endovascular aortic repair, NLR neutrophil-to-lymphocyte ratio, BMI body mass index, COPD chronic obstructive pulmonary disease, LSCA left subclavian artery, SBP systolic blood pressure, DBP diastolic blood pressure