Table 1.
Patient characteristics in those included and excluded from the study.
| Included (n = 145) | Excluded (n = 17) | |
|---|---|---|
| Gender, male – n (%) | 97 (67.4) | 12 (52.2) |
| Age – average, (95% CI) | 57.7 (56–60) | 61.4 (52.5–70.2) |
| Initial rhythm | ||
| Asystole – n (%) – 95%CI | 68 (46.9) – 39.0 – 55.0 | 10 (58.8) – 36.0–78.4 |
| PEA – n (%) – 95%CI | 44 (30.1) – 23.4 – 38.3 | 5 (29.4) – 13.9–53.4 |
| Sinus – n (%) – 95%CI | 3 (2.0) – 0.4–6.2 | 1 (5.8) – 0.00–28.9 |
| Vfib – n (%) – 95%CI | 30 (21.0) – 14.9–28.0 | 4 (23.5) – 9.1–47.8 |
| Witnessed Arrest – n (%) | 74 (51.7) – 43.0–59.0 | |
| Bystander CPR – n (%) | 72 (50.4) – 41.6–57.7 | |
| ED presenting rhythm | ||
| Asystole – n (%) – 95%CI | 68 (47.1) | 10 (58.8) – 36.0–78.4 |
| PEA – n (%) – 95%CI | 59 (41.0) | 5 (29.4) – 13.9–53.4 |
| Sinus – n (%) – 95%CI | 4 (2.8) | 0 (0.0%) – 0.0–21.6 |
| Vfib – n (%) – 95%CI | 13 (9.0) | 2 (11.8) – 2.0–35.6 |
| Mechanical Compression Pre-hospital n (%) – 95%CI | 106 (73.1) | |
| ETT Pre-hospital n (%) – 95%CI | 112 (77.2) | 13 (76.5) – 52.2–91.0 |
| Arrest Length in min – AVG, (95% CI) | 15.6 (13.6–17.7) | 16.39 (10.5–22.7) |
CPR, cardiopulmonary resuscitation; ETT, endotracheal tube; ED, emergency department; Min, minutes; PEA, pulseless electrical activity; Vfib-ventricular fibrillation.