Table I.
Patient characteristics stratified by American Society of Anesthesiologists (ASA) classificationa
| Characteristic | Total (n = 217) | ASA class |
P value | ||
|---|---|---|---|---|---|
| I-II (n = 37) | III (n = 83) | IV (n = 97) | |||
| Patient age, years | 55.0 ± 19.9 | 54.3 ± 22.0 | 60.0 ± 19.7 | 51.0 ± 18.4 | .009 |
| Female gender | 66 (30.4) | 10 (27.0) | 29 (34.9) | 27 (27.8) | .520 |
| Race | .811 | ||||
| White | 160 (73.7) | 28 (75.7) | 63 (75.9) | 69 (71.1) | |
| Black | 40 (18.4) | 5 (13.5) | 16 (19.3) | 19 (19.6) | |
| Asian/Oriental | 5 (2.3) | 1 (2.7) | 1 (1.2) | 3 (3.1) | |
| Native American/Alaska Native | 2 (0.9) | 0 (0.0) | 0 (0.0) | 2 (2.1) | |
| Native Hawaiian/other Pacific Islander | 1 (0.5) | 0 (0.0) | 0 (0.0) | 1 (1.0) | |
| Other | 9 (4.1) | 3 (8.1) | 3 (3.6) | 3 (3.1) | |
| Injury severity score | 31.5 ± 14.5 | 27.4 ± 13.6 | 29.4 ± 15.4 | 33.4 ± 14.3 | .234 |
| Polytrauma | .314 | ||||
| Yes (ISS >17) | 85 (84.2) | 13 (76.5) | 18 (78.3) | 54 (88.5) | |
| No (ISS ≤17) | 16 (15.8) | 4 (23.5) | 5 (21.7) | 7 (11.5) | |
| NA | 116 | 20 | 60 | 36 | |
| Maximum diameter measured at enrolling sites, mm | |||||
| Aneurysm/lesion | 40.0 ± 16.8 (n = 50) | 42.4 ± 17.5 (n = 4) | 45.8 ± 17.4 (n = 20) | 33.6 ± 13.6 (n = 26) | <.001 |
| True lumen | 24.5 ± 8.9 (n = 167) | 19.5 ± 8.3 (n = 33) | 23.1 ± 10.6 (n = 63) | 26.3 ± 7.4 (n = 71) | .246 |
| False lumen | 28.0 ± 8.5 (n = 167) | 25.5 ± 5.3 (n = 33) | 26.9 ± 8.2 (n = 63) | 29.2 ± 9.2 (n = 71) | .539 |
| Overall transverse | 40.2 ± 8.1 (n = 167) | 37.7 ± 5.4 (n = 33) | 40.4 ± 10.1 (n = 63) | 40.4 ± 6.8 (n = 71) | .824 |
| Length measured at enrolling sites, mm | |||||
| Proximal neck (aneurysm or lesion; LCC) | 5.9 ± 8.3 (n = 3) | 7.9 ± 17.4 (n = 1) | 6.3 ± 4.8 (n = 0) | 4.8 ± 4.4 (n = 2) | .131 |
| Distal neck | 15.1 ± 7.4 (n = 1) | 13.1 ± 6.0 (n = 0) | 14.0 ± 8.6 (n = 0) | 16.8 ± 6.5 (n = 1) | .007 |
| Aneurysm/lesion | 5.6 ± 5.7 (n = 50) | 5.6 ± 5.5 (n = 4) | 7.2 ± 6.4 (n = 20) | 4.1 ± 4.7 (n = 26) | .007 |
| Dissection | 35.3 ± 15.4 (n = 170) | 34.7 ± 18.7 (n = 33) | 35.1 ± 17.8 (n = 63) | 35.6 ± 13.3 (n = 74) | .992 |
| Maximum diameter measured at core laboratory (axial), mm | |||||
| Aneurysm/lesion | 43.6 ± 17.7 (n = 50) | 43.7 ± 17.4 (n = 4) | 51.0 ± 18.6 (n = 20) | 36.9 ± 14.2 26 | < .001 |
| Overall transverse | 44.5 ± 10.5 (n = 168) | 37.4 ± 5.5 (n = 33) | 44.2 ± 12.0 (n = 63) | 45.9 ± 9.6 72 | .327 |
| True lumen | 20.7 ± 7.3 (n = 168) | 22.4 ± 2.3 (n = 33) | 20.2 ± 9.1 (n = 63) | 20.7 ± 6.3 72 | .867 |
| False lumen | 24.5 ± 6.7 (n = 168) | 17.3 ± 8.0 (n = 33) | 25.4 ± 7.7 (n = 63) | 24.9 ± 5.1 72 | .075 |
| Maximum false lumen area, mm2 (core laboratory) | |||||
| Dissected DTA | 904.2 ± 387.1 (n = 168) | 620.7 ± 309.4 (n = 33) | 804.0 ± 262.8 (n = 63) | 1029.7 ± 441.4 72 | .044 |
| Dissected aorta | 904.2 ± 387.1 (n = 168) | 620.7 ± 309.4 (n = 33) | 804.0 ± 262.8 (n = 63) | 1029.7 ± 441.4 72 | .044 |
DTA, Descending thoracic aneurysm; ISS, injury severity score; LCC, left common carotid artery; NA, not applicable.
Data presented as number (%) or mean ± standard deviation, with number of missing values in parentheses.
a
Continuous variables compared using one-way analysis of variance and categorical variables using the χ2 or Fisher exact test.