TABLE 3a.
Demographics/Outcomes for patients off MV at discharge vs. on MV at discharge
| Off ventilation at D/C (N=247) | On ventilation at D/C (N=63) | p | |
|---|---|---|---|
| Age | 41 (18–83) | 45 (18–80) | 0.0744 |
| Male | 196 (79.4%) | 50 (79.4%) | 0.2630 |
| Blunt mechanism | 207 (83.8%) | 56 (88.9%) | 0.2080 |
| Mean injury severity score | 31 +/− 14 | 36 +/− 17 | 0.0129 |
| Mean AIS-head | 3 +/− 2 | 4 +/− 2 | 0.0000 |
| Mean AIS-chest | 3 +/− 2 | 2 +/− 2 | 0.0109 |
| Median arrival Glasgow coma scale | 15 (10–15) | 13 (8–15) | 0.1009 |
| Cervical injury | 139 (56.3%) | 59 (93.7%) | |
| Thoracic injury | 78 (31.6%) | 4 (6.4%) | 0.0000 |
| Lumbar injury | 30 (12.2%) | 0 (0.0%) | |
| Complete injury | 109 (44.1%) | 47 (74.6%) | 0.0000 |
| Traumatic brain injury | 44 (17.8%) | 19 (30.2%) | 0.0570 |
| Other injury | 144 (58.3%) | 39 (61.9%) | 0.1030 |
| Operative stabilization | 165 (66.8%) | 49 (77.8%) | 0.0040 |
| Ventilator associated pneumonia | 71 (28.7%) | 49 (77.8%) | 0.0000 |
| Acute lung injury | 12 (4.9%) | 11 (17.5%) | 0.0010 |
| Acute respiratory distress syndrome | 16 (6.5%) | 8 (12.7%) | 0.1300 |
| ICU days | 10 (5–18) | 25 (17–36) | 0.0001 |
| Hospital days | 19 (11–31) | 28 (18–40) | 0.0002 |
| Ventilator-free days (to 28 days) | 22 (11–26) | 0 (0-0) | 0.0001 |
| Extubation attempted | 177 (71.7%) | 7 (11.1%) | 0.0000 |
| Successfully extubated (never received tracheostomy) | 167 (67.6%) | 0 (0.0%) | 0.0000 |
| Tracheostomy | 80 (32.4%) | 59 (93.7%) | 0.0000 |
*
Patient demographics, injury characteristics, ventilatory status at discharge or transfer, and outcomes for patients on and off MV at discharge. Significance assessed by Kruskal-Wallis for continuous and Fisher’s exact test for dichotomous outcomes among groups. Data are mean +/− SD, median (inter-quartile range), or n (%) as indicated. For not-normally distributed variables reported as median with inter-quartile ranges. Ventilator-free days are counted to 28 days.