Table 1.
Comparability of Cardiopulmonary Resuscitation Data
| Hands-On (n=7) | Hands-Off (n=8) | P | |
|---|---|---|---|
| CPR time to ROSC, s | 374 [239; 646] | 312 [251; 498] | 0.9616 |
| Number of shocks, n | 4 [3; 9] | 3.5 [2.25; 9.75] | 0.9085 |
| Cumulative defibrillation energy, J | 640 [440; 1640] | 540 [290; 1790] | 0.8667 |
| Cumulative epinephrine dose, μg/kg | 33 [27; 68] | 42 [28; 134] | 0.5338 |
| Cumulative vasopressin dose, IU/kg | 0.70 [0.48; 0.82] | 0.51 [0.31; 0.64] | 0.1893 |
| etCO2 5 min CPR, mmHg | 19 [8; 24] | 13 [9; 19.5] | 0.6249 |
| Blood lactate 5 min CPR, mmol/L | 8.7 [4.4; 10.1] | 5.0 [4.5; 5.3] | 0.1331 |
| pH 5 min CPR | 7.29 [7.16; 7.59] | 7.47 [7.35; 7.58] | 0.4452 |
Cardiopulmonary resuscitation (CPR) time to return of spontaneous circulation (ROSC), number of shocks, cumulative defibrillation energy, and cumulative vasopressor dose did not differ significantly between groups, as well as end-tidal carbon dioxide (etCO2), lactate, and pH, that were assessed 5 minutes after start of CPR. Data are median (25%; 75% quartiles). Three animals in the hands-on and 2 animals in the hands-off group that received only 1 shock were excluded from analysis.