Table 1:
Baseline demographic and clinical characteristics
| Covariate | Total cohort (n=73) | Institution A* (n=56) | Institution B* (n=17) | Major hepatic arterial injury | P value | |
|---|---|---|---|---|---|---|
| Yes (n= 41) | No (n=32) | |||||
| Angio only -n (%) | 59 (81) | 51 (91) | 8 (47) | 32 (78) | 27 (84) | |
| Angio and Ex-lap -n (%) | 14 (19) | 5 (9) | 9 (53) | 9 (22) | 5 (16) | |
| Age | 33 [24 – 52] | 29 [23 – 48] | 47 [32 – 57] | 35 [25 – 53] | 32 [23 – 51] | 0.734 |
| Gender -n (%) | ||||||
| Male | 40 (55) | 30 (54) | 10 (59) | 25 (61) | 15 (47) | 0.233 |
| Female | 33 (45) | 26 (46) | 7 (41) | 16 (39) | 17 (53) | |
| Mechanism of injury -n (%) | ||||||
| MVC | 56 (77) | 41 (73) | 15 (88) | |||
| Fall | 5 (7) | 3 (5) | 2 (12) | |||
| Other | 12 (16) | 12 (21) | 0 (0) | |||
| ISS 90 | 34 [27 – 41] | 36 [29 – 42] | 34 [25 – 41] | 34 [25 – 41] | 34 [31 – 44] | 0.397 |
| ISS 90 ≥ 16 -n (%) | 59 (81) | 43 (77) | 16 (94) | 34 (83) | 25 (78) | 0.608 |
| Associated injuries -n (%) | ||||||
| Gallbladder | 6 (8) | 5 (9) | 1 (6) | |||
| Spleen | 31 (43) | 25 (45) | 6 (35) | |||
| Kidney | 16 (22) | 11 (20) | 5 (29) | |||
| Adrenal | 18 (25) | 13 (23) | 5 (29) | |||
| Pancreas | 6 (8) | 4 (7) | 2 (12) | |||
| Colon | 3 (4) | 3 (5) | 0 (0) | |||
| Small Bowel | 5 (7) | 4 (7) | 1 (6) | |||
| Pelvic fracture | 17 (23) | 13 (23) | 4 (24) | |||
| Admission to CT time (min) | 50 [31 – 70] | 45 [30 – 70] | 56 [41 – 67] | 50 [31 – 71] | 48 [31 – 67] | 0.921 |
| Admission to angio time (hours) | 4.2 [3.0 – 5.4] | 4.4 [3.4 – 5.4] | 3.0 [2.6 – 5.4] | 3.9 [2.8 – 5.3] | 4.4 [3.2 – 6.2] | 0.217 |
| Systolic BP (mm Hg) | 122 [105 – 133] | 121 [105 – 130] | 128 [103 – 142] | 125 [109 – 133] | 120 [101 – 133] | 0.267 |
| Hypotension (SBP ≤ 90 mm Hg) -n (%) | 7 (10) | 4 (7) | 3 (18) | 3 (7) | 4 (13) | 0.424 |
| Heart rate | 101 [82 – 117] | 104 [82 – 116] | 95 [86 – 120] | 100 [82 – 117] | 101 [86 – 113] | 0.910 |
| Tachycardia (HR ≥ 90) -n (%) | 43 (59) | 32 (57) | 11 (65) | 24 (59) | 19 (59) | 0.778 |
| In hospital mortality | 4§ | 2 | 2 | |||
Note.— All continuous variables had non-normal distributions and are presented as median [first quartile - third quartile]
*
University of Maryland Medical Center/R. Adams Cowley Shock Trauma Center is denoted as Institution A, and University of Miami Jackson Memorial Medical Center/Ryder Trauma Center is denoted as Institution B.
§
Three patients expired from unsurvivable head injuries (AIS = 6). One patient expired from multi-organ system failure.
Missing values: there were 3 missing values for systolic blood pressure (4.1%), and three for heart rate (4.1%).
Abbreviations: Angio- angioembolization, ex-lap- exploratory laparotomy, ISS– injury severity score, BP- blood pressure