Table 1.
The baseline preoperative characteristics of uTBAD patients receiving TEVAR grouped by NLR value < 4.8 and ≥ 4.8
| Variable | Overall | Low NLR (< 4.8) |
High NLR (≥ 4.8) |
Standardized difference | P 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 |
Categorical variables are reported as frequency and percentage; continuous variables are reported as median (25th–75th percentile)
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