Table 4.
Outcomes, Blood Gas, and Cardiopulmonary Resuscitation-related Injuries by Study Group
| Variable | ETCO2 Group | Standard Group | p |
|---|---|---|---|
| Outcome results | |||
| Successful ROSC, n (%) | 7/14 (50) | 2/14 (14) | 0.04 |
| Time to ROSC (survivors), min | 15.2 ± 3.9 | 15.6 ± 6.2 | 0.9 |
| Successfully defibrillated, n (%) | 9/14 (64) | 5/14 (36) | 0.26 |
| Time to defibrillation, min | 14.6 ± 3.0 | 14.0 ± 5.3 | 0.8 |
| Defibrillation attempts | 3.6 ± 1.5 | 4.2 ± 1.3 | 0.29 |
| Doses of epinephrine required | 2.3 ± 0.8 | 2.7 ± 0.7 | 0.16 |
| 8-minute CPR arterial blood gas results | |||
| pH | 6.98 ± 0.1 | 7.02 ± 0.2 | 0.77 |
| PaCO2 | 54 ± 20 | 42 ± 29 | 0.12 |
| PaO2 | 132 ± 77 | 120 ± 67 | 0.33 |
| BE | −18 ± 3.4 | −20 ± 3.6 | 0.09 |
| Autopsy results | |||
| Atelectasis, n (%) | 10/13 (77) | 8/12 (66) | 0.67 |
| Liver laceration, n (%) | 0/13 (0) | 0/12 (0) | N/A |
| Epicardial hemorrhages, n (%) | 10/13 (77) | 4/12 (33) | 0.05 |
| Hemothorax, n (%) | 3/13 (23) | 0/12 (0) | 0.12 |
Data are shown as mean ± SD unless otherwise specified. Percentages are in parentheses. BE = base excess; N/A = not applicable; PaCO2 = arterial partial pressure of carbon dioxide; PaO2 = arterial partial pressure of oxygen; ROSC = return of spontaneous circulation.