Table 1.
Characteristics of injured patients
| Characteristic | Transfused (n=39) | Not Transfused (n=17) |
|---|---|---|
| Age, years (mean ± SD) | 34 ± 14 | 38 ± 16 |
| Male gender, n (%) | 33 (85) | 9 (53) |
| Blunt mechanism of injury, n (%) | 26 (67) | 14 (82) |
| Mechanism of injury, n (%) | ||
| Motor vehicle collision | 12 (31) | 7 (41) |
| Motorcycle collision | 7 (18) | 1 (6) |
| Automobile versus pedestrian/bicycle | 2 (5) | 2 (12) |
| Fall | 1 (2) | 2 (12) |
| Firearm wound | 8 (20) | 2 (12) |
| Stab wound | 4 (10) | 1 (6) |
| Other | 5 (13) | 2 (12) |
| Revised Trauma Score† | 7.84 (7.11, 7.84) | 7.84 (6.38, 7.84) |
| Injury Severity Score (mean ± SD) | 20 ± 12 | 13 ± 6 |
| Injury Severity Score components† | ||
| Abbreviated Injury Scale—Head/neck | 2 (0, 2) | 2 (0, 3) |
| Abbreviated Injury Scale—Face | 0 (0, 0) | 0 (0, 0) |
| Abbreviated Injury Scale—Chest | 2 (0, 3) | 0 (0, 3) |
| Abbreviated Injury Scale—Abdomen | 2 (0, 2) | 0 (0, 2) |
| Abbreviated Injury Scale—Extremities | 3 (0, 3) | 1 (0, 2) |
| Abbreviated Injury Scale—External | 0 (0, 1) | 0 (0, 0) |
| Predicted probability of survival†* | 0.98 (0.85, 0.99) | 0.98 (0.96, 0.99) |
| Initial systolic blood pressure† | 103 (93, 118) | 130 (108, 140) |
| Initial international normalized ratio (INR)† | 1.06 (1.00, 1.20) | 0.99 (0.97, 1.03) |
| Initial partial thromboplastin time (PTT)† | 24.0 (22.6, 26.1) | 23.7 (22.8, 24.8) |
| PRBC transfused (units)† ‡ | 4 (2, 8) | — |
| Platelets transfused (units)† ‡ | 0 (0, 0) | — |
| Cryoprecipitate transfused (units)† ‡ | 0 (0, 0) | — |
| Plasma transfused (units)† ‡ | 1 (0, 2) | — |
| Crystalloid infused (liters)† ‡ | 10.4 (7.6, 16.5) | 5.6 (3.9, 7.8) |
| Colloid infused (liters)† ‡ | 0 (0, 0.8) | 0 (0, 0) |
| Length of stay (days)† | 17 (10, 34) | 8 (5, 14) |
*
Determined from the Trauma and Injury Severity Score (TRISS)
†
Median (IQR)
‡
Within the first 48 hours after injury