Table 3.
Relationship between trajectories of hypoxia, hypotension, and pupils and extracranial lesions or therapies at the scene of the accident
| Extracranial lesions | Sedation at scene | Intubation at scene | Bleeding requiring transfusion | Chest trauma | PNX | Abdominal trauma | Limb trauma/ fractures | Facial trauma/ fracture | Pelvic trauma/ fractures | Amyelic spinal trauma | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hypoxia trajectory | |||||||||||
| None (n=693) | 374 (54%) | 342 (49%) | 335 (48%) | 54 (8%) | 152 (22%) | 43 (6%) | 57 (8%) | 137 (20%) | 188 (27%) | 48 (7%) | 18 (3%) |
| Resolved (n=176) | 136 (77%) | 112 (64%) | 144 (82%) | 41 (23%) | 76 (43%) | 24 (14%) | 27 (15%) | 70 (40%) | 70 (40%) | 25 (14%) | 11 (6%) |
| Sustained (n=18) | 16 (89%) | 6 (33%) | 10 (56%) | 7 (39%) | 12 (67%) | 7 (39%) | 3 (17%) | 3 (17%) | 3 (17%) | 5 (28%) | 1 (6%) |
| New event (n=4) | 3 (75%) | 2 (50%) | 2 (50%) | 0 (0%) | 1 (25%) | 1 (25%) | 0 (0%) | 2 (50%) | 2 (50%) | 0 (0%) | 0 (0%) |
| P-value | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 | 0.02 | 0.11 | < 0.01 | < 0.01 | 0.08 |
| Hypotension trajectory | |||||||||||
| None (n=717) | 396 (55%) | 355 (50%) | 344 (48%) | 49 (7%) | 153 (21%) | 38 (5%) | 43 (6%) | 136 (19%) | 209 (29%) | 40 (6%) | 15 (2%) |
| Resolved (n=125) | 98 (78%) | 86 (69%) | 101 (81%) | 26 (21%) | 60 (48%) | 15 (12%) | 26 (21%) | 41 (33%) | 38 (30%) | 25 (20%) | 10 (8%) |
| Sustained (n=56) | 50 (89%) | 27 (48%) | 49 (88%) | 34 (61%) | 29 (52%) | 19 (34%) | 15 (27%) | 16 (29%) | 24 (43%) | 13 (23%) | 5 (9%) |
| New event (n=18) | 13 (72%) | 9 (50%) | 8 (44%) | 1 (6%) | 7 (39%) | 1 (6%) | 4 (22%) | 5 (28%) | 9 (50%) | 4 (22%) | 1 (6%) |
| P-value | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 | < 0.01 | 0.03 | 0.05 | < 0.01 | < 0.01 |
| Pupils trajectory | |||||||||||
| None (n=588) | 348 (59%) | 264 (45%) | 249 (42%) | 53 (9%) | 146 (25%) | 44 (7%) | 47 (8%) | 130 (22%) | 162 (28%) | 48 (8%) | 21 (4%) |
| Resolved (n=53) | 32 (60%) | 45 (85%) | 47 (89%) | 4 (8%) | 20 (38%) | 7 (13%) | 7 (13%) | 8 (15%) | 17 (32%) | 5 (9%) | 2 (4%) |
| Sustained (n=152) | 95 (63%) | 109 (72%) | 116 (76%) | 21 (14%) | 47 (31%) | 12 (8%) | 17 (11%) | 32 (21%) | 61 (40%) | 14 (9%) | 3 (2%) |
| New event (n=55) | 24 (44%) | 23 (42%) | 27 (49%) | 5 (9%) | 5 (9%) | 2 (4%) | 1 (2%) | 7 (13%) | 12 (22%) | 6 (11%) | 1 (2%) |
| P-value | 0.10 | < 0.01 | < 0.01 | 0.32 | < 0.01 | 0.32 | 0.08 | 0.28 | 0.1 | 0.81 | 0.81 |