Preoperative variables
| OR group (n=45) | ED group (n=43) | P value | |
| Time from the scene to hospital (min), mean±SD | 22±20 | 31±50 | 0.04 |
| Shock (SBP <90 mm Hg) at the scene, n (%) | 9 (20) | 19 (44) | 0.02 |
| Shock at admission, n (%) | 5 (11) | 17 (40) | <0.01 |
| Shock prior to operation, n (%) | 8 (18) | 25 (58) | <0.01 |
| Cardiopulmonary arrest at admission, n (%) | 0 | 5 (12) | 0.02 |
| Administration of sedation in the emergency department, n (%) | 24 (53) | 29 (67) | 0.18 |
| New-onset shock after sedation, n (%) | 6/24 (25*) | 17/29 (59*) | <0.01 |
OR group: trauma patients who underwent emergency operation in the operating room; ED group: trauma patients who underwent emergency operation in the emergency room.
ED, emergency department; OR, operating room; SBP, systolic blood pressure.