Table 3. Duration of AO by Group and Location of AO.
| Duration of AO | Duration, min | ||
|---|---|---|---|
| Mean (SD) | Median (IQR) | Maximuma | |
| Clinical indication | |||
| Severe traumatic hemorrhage groupa | 82.7 (60.9) | 69.1 (35.3-123.3) | 233.5 |
| Traumatic arrest groupa | 35.5 (34.8) | 18.5 (12.0-47.0) | 127.0 |
| Location of AOb | |||
| Zone 1 | 48.6 (51.2) | 30.0 (12.8-74.5) | 233.5 |
| Zone 3 | 73.9 (43.9) | 63.4 (35.5-115.7) | 143.0 |
Abbreviations: AO, aortic occlusion; IQR, interquartile range.
a
The maximum is defined as total occlusion in zone 1, zone 3, or zone 1 and 3.
b
For a description of zones 1 and 3, see the Study Design, Setting, and Participants subsection of the Methods section.