|
Variables associated with survival at 24 hours |
|||
| Variables |
Odds ratio |
95% confidence interval |
p value |
|
|
|||
| Shockable rhythm (VF, VT) |
1.27 |
1.08–1.58 |
0.02 |
| Arrival time |
1.32a |
1.24–1.68 |
0.01 |
| Witnessed arrest |
7.64 |
2.32–22.42 |
< 0.001 |
| Bystander CPR |
4.84 |
2.10–10.48 |
< 0.001 |
| Initial petCO2 b |
18.65 |
6.14–32.27 |
< 0.001 |
| Average petCO2 b |
2.86 |
1.42–4.65 |
< 0.001 |
| Final petCO2 b |
2.26 |
1.21–4.13 |
0.012 |
| Initial MAPb |
1.06 |
0.82–1.43 |
0.46 |
| Final MAPb |
1.79 |
1.28–3.12 |
0.009 |
| Vasopressin |
1.34 |
1.14–1.94 |
0.024 |
| Period 2c |
1.68 |
1.20–2.94 |
0.008 |
|
aValue proportional to each one-minute decrease in arrival time; bValues proportional to each increase by 1.33 kPa (10 mm Hg); cCPR performed in the period from November 2003 to April 2006 (period 1: January 2000 to November 2003). CPR, cardiopulmonary resuscitation; MAP, mean arterial blood pressure; petCO2, end-tidal pressure of carbon dioxide. | |||
Mally et al. Critical Care 2007 11:R39 doi:10.1186/cc5726 |
|||