Baseline characteristics, n=175
| Variable | Non-hypothermia (n=88) | Hypothermia (n=87) | p Value |
| Age, years | 63 (52–73) | 65 (53–75) | 0.82 |
| Female sex, n/total n (%) | 29/88 (33) | 34/87 (39) | 0.40 |
| APACHE score | 25 (19–32) | 31 (25–35) | 0.02 |
| Location of cardiac arrest | |||
| Out-of-hospital, n/total n (%) | 61 (69.3) | 66 (75.9) | 0.33 |
| In-hospital, n/total n (%) | 27 (30.7) | 21 (24.1) | |
| Cause of cardiac arrest | |||
| AMI, n/total n (%) | 28 (31.8) | 12 (13.8) | 0.25 |
| Primary arrhythmia, n/total n (%) | 20 (22.7) | 26 (29.9) | |
| Respiratory, n/total n (%) | 36 (40.9) | 44 (50.6) | |
| Other, n/total n (%) | 4 (4.5) | 1 (1.1) | |
| Initial rhythm | |||
| Asystole, n/total n (%) | 64 (72) | 63 (72) | |
| PEA, n/total n (%) | 24 (28) | 24 (28) | |
| Time to ROSC, min | 20 (12–30) | 16 (12–25) | 0.02 |
| Total epinephrine dose, mg | 3 (2–5) | 2 (1–4) | 0.01 |
| Length of ICU stay, days | 11.5 (6–22) | 8 (4–27) | 0.05 |
| Time on ventilator, h | 193 (93–340) | 149 (80–407) | 0.16 |
| PCI, n/total n (%) | 25 (28) | 27 (31) | 0.74 |
Data are presented as medians (25th and 75th percentiles) or as absolute numbers (relative frequencies).
A value of p<0.05 was considered to be statistically significant.
AMI, acute myocardial infarction; APACHE II, Acute Physiology and Chronic Health Evaluation II; CPC, cerebral performance category; CPR, cardiopulmonary resuscitation; ICU, intensive care unit; PEA, pulseless electrical activity; PCI, percutanous coronary intervention, ROSC, return of spontaneous circulation.