Table 1.
Baseline and clinical characteristics of ATAAD patients according to the year of hospitalization.
| Year 2019 | Year 2020 | p value | |
| N = 189 | N = 148 | ||
| Age (mean (SD)), years | 53.68 (12.67) | 55.55 (14.18) | 0.202 |
| Male, n (%) | 131 (69.3) | 110 (74.3) | 0.373 |
| BMI (mean (SD)), kg/ | 26.36 (3.77) | 27.10 (4.69) | 0.247 |
| Transport distance (median [IQR]), km | 218.25 [65.86, 484.08] | 162.27 [47.94, 436.87] | 0.656 |
| Onset time (median [IQR]), h | 13.00 [7.00, 30.00] | 12.00 [6.00, 33.00] | 0.554 |
| Emergency stay time (median [IQR]), h | 16.75 [10.83, 25.65] | 26.75 [15.20, 45.87] | 0.001 |
| Interval from onset to operation (median [IQR]), h | 38.42 [22.92, 81.25] | 47.12 [29.48, 96.06] | 0.049 |
| Pain, n (%) | 180 (95.2) | 133 (91.7) | 0.278 |
| Chest pain, n (%) | 130 (68.8) | 109 (75.7) | 0.278 |
| Back pain, n (%) | 81 (42.9) | 58 (40.0) | 0.278 |
| Abdominal pain, n (%) | 42 (22.2) | 22 (15.2) | 0.278 |
| Syncope, n (%) | 20 (10.6) | 9 (6.2) | 0.226 |
| Coma, n (%) | 5 (2.6) | 3 (2.1) | 1 |
| Tamponade, n (%) | 6 (3.2) | 6 (4.1) | 0.882 |
| Hypertension, n (%) | 156 (83.4) | 122 (82.4) | 0.926 |
| Diabetes, n (%) | 12 (6.5) | 8 (5.5) | 0.881 |
| Coronary heart disease, n (%) | 20 (10.9) | 24 (16.7) | 0.172 |
| COPD, n (%) | 3 (1.6) | 0 (0.0) | 0.341 |
| Chronic kidney disease, n (%) | 3 (1.6) | 1 (0.7) | 0.792 |
| Marfan syndrome, n (%) | 3 (1.6) | 1 (0.7) | 0.797 |
| Bicuspid aortic valve, n (%) | 8 (4.3) | 2 (1.4) | 0.223 |
| Previous aortic surgery history, n (%) | 5 (2.7) | 4 (2.7) | 1 |
| Previous cardiac surgery, n (%) | 5 (2.7) | 3 (2.0) | 0.98 |
| cTnI (median [IQR]), g/L | 0.00 [0.00, 0.02] | 0.01 [0.00, 0.03] | 0.387 |
| NT proBNP (median [IQR]), ng/L | 220.10 [81.88, 608.80] | 239.90 [80.38, 805.70] | 0.958 |
| Hemoglobin (median [IQR]), g/L | 136.00 [124.00, 148.00] | 143.00 [132.25, 151.75] | 0.02 |
| White blood cell (median [IQR]), */L | 10.94 [9.37, 13.68] | 11.80 [9.53, 14.83] | 0.25 |
| Platelet (median [IQR]), */L | 177.00 [150.00, 214.00] | 185.00 [156.25, 219.00] | 0.448 |
| Creatinine (median [IQR]), moI/L | 88.70 [74.30, 106.60] | 84.62 [76.32, 105.04] | 0.773 |
| D-Dimer (median [IQR]), mg/L | 7.60 [2.01, 18.51] | 7.17 [2.78, 13.92] | 0.76 |
| Aortic insufficiency, n (%) | 0.42 | ||
| none | 53 (29.3) | 36 (25.2) | |
| mild | 66 (36.5) | 50 (35.0) | |
| moderate | 56 (30.9) | 47 (32.9) | |
| severe | 6 (3.3) | 10 (7.0) | |
| Ejection fraction (median [IQR]), % | 60.00 [58.00, 63.00] | 60.00 [58.00, 62.00] | 0.714 |
BMI, body mass index; COPD, chronic obstructive pulmonary disease.