Patient characteristics by femoral or popliteal arterial and venous injuries (n=207)
| Characteristic | Overall sample (n=207) | Patients with isolated arterial injuries (n=131) | Patients with concomitant arterial and venous injuries (n=76) | P value* |
| Age, median (Q1, Q3) | 26 (22, 35) | 27 (22, 37) | 25 (22, 34) | 0.6819 |
| Gender, n (%) | 0.7866 | |||
| Male | 192 (92.8) | 122 (93.1) | 70 (92.1) | |
| Female | 15 (7.2) | 9 (6.9) | 6 (7.9) | |
| Race, n (%) | (n=185) | (n=116) | (n=69) | 0.6324 |
| White | 42 (22.7) | 27 (23.3) | 15 (21.7) | |
| Black | 134 (72.4) | 83 (71.5) | 51 (73.9) | |
| Asian | 3 (1.6) | 3 (2.6) | 0 (0.0) | |
| Other | 6 (3.3) | 3 (2.6) | 3 (4.4) | |
| ISS, median (Q1, Q3) | 10 (10, 17) | 10 (10, 17) | 14 (10, 17) | 0.1701 |
| TRISS, median (Q1, Q3) | 0.9868 (0.956, 0.990) (n=193) | 0.988 (0.970, 0.990) (n=124) | 0.982 (0.908, 0.990) (n=69) | 0.0177 |
| AIS, median (Q1, Q3) | 3 (3, 4) | 3 (3, 4) | 3 (3, 4) | 0.0639 |
| SBP, mean (SD) | 109.14 (38.9) (n=203) | 113.1 (35.5) (n=129) | 102.2 (43.7) (n=74) | 0.0705 |
| HR, mean (SD) | 96.5 (33.8) (n=204) | 95.16 (30.9) (n=130) | 98.85 (38.5) (n=74) | 0.4817 |
| GCS, median (Q1, Q3) | 15 (14, 15) (n=205) | 15 (15, 15) (n=130) | 15 (6, 15) (n=75) | 0.0095 |
| Blood unit, median (Q1, Q3) | 0 (0, 2) (n=205) | 0 (0, 1) (n=129) | 1 (0, 2.5) | 0.0002 |
| MTP, n (%) | 26 (23.9) (n=109) | 9 (14.1) (n=64) | 17 (37.8) (n=45) | 0.0060 |
| ICU LOS, median (Q1, Q3) | 2 (1, 3) | 1 (0, 3) | 2 (1, 4) | 0.0016 |
| Step-down LOS, median (Q1, Q3) | 0 (0, 0) | 0 (0, 0) | 0 (0, 0) | 0.3674 |
| Ventilator days, median (Q1, Q3) | 0 (0, 1) | 0 (0, 1) | 1 (0, 1) | 0.0005 |
| Hospital LOS, median (Q1, Q3) | 9 (4, 16) | 8 (4, 15) | 11 (6, 18.5) | 0.0124 |
| DVT, n (%) | 14 (6.8) | 4 (3.1) | 10 (13.2) | 0.0083 |
| Mortality, n (%) | 16 (7.7) | 8 (6.1) | 8 (10.5) | 0.2856 |
| Procedure, n (%) | 0.5267 | |||
| Endovascular repair | 41 (19.8) | 30 (22.9) | 11 (14.5) | |
| Open repair | 29 (14.0) | 18 (13.7) | 11 (14.5) | |
| Combined approach | 55 (26.6) | 34 (26.0) | 21 (27.6) | |
| Neither | 82 (39.6) | 49 (37.4) | 33 (43.4) | |
| Vascular injury repair >24 hours, n (%) | 3 (2.9) (n=102) | 2 (3.9) (n=51) | 1 (2.0) (n=51) | >0.9999 |
| Vascular injury repair <24 hours, n (%) | 95 (96.9) (n=98) | 47 (95.9) (n=49) | 48 (98.0) (n=49) | >0.9999 |
| Revision operations, n (%) | 6 (2.9) | 3 (2.3) | 3 (4.0) | 0.6712 |
*P values based on non-parametric Wilcoxon rank-sum tests or parametric two-sample t-tests for continuous variables and Fisher’s exact tests for categorical variable.
AIS, Abbreviated Injury Scale; DVT, deep venous thrombosis; GCS, Glasgow Coma Scale; HR, heart rate; ICU, intensive care unit; ISS, Injury Severity Score; LOS, length of stay; MSP, massive transfusion protocol; SBP, systolic blood pressure; TRISS, Trauma and Injury Severity Score.