Table 1 −.
Cohort characteristics.
| Variable | Complete cohort (n = 43) | Potentially preventablea (n = 11) | Unlikely or not preventable (n = 32) | p-Value |
|---|---|---|---|---|
| Demographics | ||||
| Age (median, IQR) | 69.0 (58–77) | 69.0 (60–78) | 69.0 (58–77) | 0.66 |
| Gender (%female) | 34.9 | 9.1 | 43.8 | 0.07 |
| Race (%white) | 51.2 | 54.6 | 50.0 | >0.99 |
| Vasopressor | 62.8 | 63.6 | 62.5 | >0.99 |
| Invasive mechanical ventilation | 55.8 | 36.4 | 62.5 | 0.17 |
| Arrest characteristics | ||||
| Location n(%) | 0.92 | |||
| Cardiac care unit 8 beds | 10 (23.3) | 2 (18.2) | 8 (25.0) | |
| Cardiac surgery 15 beds | 2 (4.7) | 0 (0) | 2 (6.3) | |
| Medical ICUb 28 beds | 18 (41.9) | 5 (45.5) | 13 (40.6) | |
| Neurologic ICU 8 beds | 1 (2.3) | 0(0) | 1 (3.1) | |
| Surgical ICU 8 beds | 8 (18.6) | 2 (18.2) | 6 (18.8) | |
| Trauma surgical ICU 10 beds | 4 (9.3) | 2 (18.2) | 2 (6.3) | |
| Initial rhythm (shockable %) | 28.6 | 9.1 | 35.5 | 0.21 |
| Time of day (Daytimec %) | 39.5 | 36.4 | 40.6 | >0.99 |
| Duration of resuscitative efforts (minutes, median, IQR) | 12 (4–27) | 14 (8–15) | 12 (4–32) | 0.69 |
| Time from ICU admission until arrest (hours, median, IQR) | 50.0 (9.5–156.7) | 9.5 (1.8–50.1) | 69.5 (16.2–252.5) | 0.01 |
| Outcomes | ||||
| Return of spontaneous circulation (ROSC) achieved | 62.8 | 54.6 | 65.6 | 0.72 |
| Survival to hospital discharge | 23.3 | 36.4 | 18.8 | 0.25 |
a
As determined by a preventability score of ≥ 3 by at least half of expert reviewers.
b
Includes both the medical ICU and a mixed medical/surgical ICU that is occupied primarily be medical ICU patients.
c
Daytime defined as the hours from 0700 until 1859.