Table 1.
Baseline characteristics of the intravascular and surface device patients
| Characteristic | Intravascular n = 240 | Surface device n = 694 | p value |
|---|---|---|---|
| Age (years) | 63 ± 12.7 | 64.5 ± 12.0 | 0.12 |
| Male gender | 190, 79% | 567, 82% | 0.39 |
| Body mass index (kg/m2) | 26.9 ± 5.0 | 27.0 ± 8.1 | 0.78 |
| Bystander witnessed | 212, 89% | 623, 90% | 0.64 |
| Bystander CPR | 162, 68% | 518, 74% | 0.04 |
| Shockable rhythm | 187, 78% | 547, 79% | 0.78 |
| Time to CPR (minutes) | 1 [0–2] | 1 [0–2] | 0.37 |
| Time to ROSC (minutes) | 25 [17-39] | 25 [17-40] | 0.73 |
| Time collapse to randomization (minutes) | 176 [125–227] | 158 [114–210] | 0.92 |
| Baseline temperature on admission (°C) | 35.2 ± 1.2 | 35.3 ± 1.2 | 0.19 |
| GCS | 4 [3-5] | 3 [3-5] | 0.31 |
| Serum pH | 7.20 ± 0.15 | 7.20 ± 0.16 | 0.65 |
| Serum lactate (mmol/l) | 6.3 ± 4.3 | 6.9 ± 4.5 | 0.07 |
| Circulatory shock on admission | 42, 18% | 94, 14% | 0.13 |
| Coronary angiography | 181, 75% | 404, 58% | 0.27 |
| Haemodialysis on day 1 | 9, 4% | 21, 3% | 0.50 |
| SOFA - C | 3 [2-4] | 3 [2-4] | 0.26 |
Values are mean ± SD, n,% or median [IQR] as appropriate
Abbreviations: CPR cardiopulmonary resuscitation, ROSC return of spontaneous circulation, GCS Glasgow Coma Scale, SOFA - C Cardiovascular Sequential Organ Failure Assessment