Table 2 Baseline characteristics of patients with and without hematoma
Variables | Hematoma (n = 158) | No hematoma (n = 351) | Z/χ2 | P value |
|---|---|---|---|---|
Age (years) | 55 (47, 65) | 56 (49, 66) | 0.97 | 0.33 |
Female | 80 (50.6) | 76 (21.6) | 43.10 | < 0.001 |
BMI (kg/m2) | 22.5 (20.6, 24.4) | 23.1 (21.3, 25.5) | 2.93 | 0.003 |
Diabetes mellitus | 12 (7.6) | 44 (12.5) | 2.71 | < 0.10 |
Hypertension | 23 (14.6) | 69 (19.7) | 1.91 | 0.16 |
Smoking within last 1 year | 40 (25.3) | 122 (34.8) | 4.47 | 0.03 |
Laboratory test | ||||
PT (s) | 11.2 (10.7, 11.8) | 11.3 (10.7,11.9) | 0.50 | 0.61 |
APTT (s) | 27.8 (26.4, 29.8) | 28.2 (26.4, 29.9) | 0.95 | 0.51 |
Hematocrit (%) | 40 (37, 43) | 40 (37, 44) | 0.52 | 0.59 |
PLT (× 109/L) | 163 (124, 202) | 173 (132, 234) | 2.15 | 0.03 |
Type of surgery | ||||
Liver | 84 (53.2) | 163 (46.4) | 3.02 | 0.55 |
Gastrointestinal | 44 (27.9) | 121 (34.5) | ||
Pancreas | 16 (10.1) | 31 (8.8) | ||
Biliary | 7 (4.4) | 16 (4.6) | ||
Other | 7 (4.4) | 20 (5.7) | ||
ASA status | ||||
II | 121 (76.6) | 261 (74.4) | 0.28 | 0.59 |
III | 37 (23.4) | 90 (25.6) | ||
Intraoperative RBC transfusion ≥ 4U | 7 (4.4) | 4 (1.4) | 4.27 | 0.03 |
Cannula indwelling time, h | 5.2 (4.0, 6.2) | 4.7 (3.8, 5.8) | 2.18 | 0.02 |