Table 2.
Comparison of ventilation parameters, hemodynamics and ABG between the CCC- and the 30:2 group
| Ventilation parameters | CPR mode | 95% CI of difference between groups | p-valuea | |
|---|---|---|---|---|
| CCC Mean (95% CI) |
30:2 Mean (95% CI) |
|||
| PIF (l/min) | 76.3 (72.2–80.5) | 51.7 (47.6–55.9) | 18.7–30.4 | < 0.001* |
| Vti (ml) | 221.5 (206.8–236.3) | 221.4 (206.6–236.2) | − 20.8–21.0 | 0.990 |
| Vti (ml/kg) | 6.8 (6.5–7.2) | 6.4 (6.1–6.8) | − 0.1–0.9 | 0.087 |
| Ti (s) | 0.435 (0.413–0.457) | 0.419 (0.397–0.441) | (− 0.015–0.048) | 0.297 |
| MV (ml) | 2189.6 (2060.8–2318.4) | 1267.1 (1136.1–1398.2) | 738.7–1106.2 | < 0.001* |
| PECO2 (mmHg) | 28.6 (22.3–34.8) | 39.4 (33.1–45.6) | − 19.7–2.0 | 0.020* |
| Hemodynamics | ||||
| CPP (mmHg) | 10.0 (2.5–17.4) | 15.2 (7.7–22.6) | − 15.7–5.3 | 0.309 |
| maxAP (mmHg) | 132.4 (94.9–170.0) | 108.7 (71.2–146.3) | − 29.4–76.8 | 0.354 |
| minAP(mmHg) | − 4.8 (− 10.7–1.0) | − 3.2 (− 9.1–2.6) | − 9.9–6.7 | 0.686 |
| maxCVP (mmHg) | 169.5 (146.3–192.7) | 146.4 (123.3–169.5) | − 9.6–55.9 | 0.153 |
| minCVP(mmHg) | 1.3 (− 5.2–7.7) | 5.0 (− 1.3–11.3) | − 12.7–5.3 | 0.393 |
| ABG | ||||
| PaO2 (mmHg) | 141.7 (86.2–196.8) | 156.0 (103.4–208.6) | − 90.4–61.8 | 0.689 |
| PaCO2 (mmHg) | 50.2 (44.2–56.2) | 61.1 (55.5–66.7) | − 19.1–2.7 | 0.013* |
| Lactate (mmol/l) | 5.6 (5.0–6.3) | 5.4 (4.8–6.0) | − 0.7–1.1 | 0.633 |
| pH | 7.3 (7.2–7.3) | 7.2 (7.2–7.3) | 0.01–0.1 | 0.029* |
CI confidence interval, PIF peak inspiratory flow, PIP peak inspiratory pressure, Vti inspiratory tidal volume, Ti duration of inspiration, MV minute volume; p = : peak expired carbon dioxide; CPP coronary perfusion pressure, maxAP maximum arterial pressure, minAP minimum arterial pressure, maxCVP maximum central venous pressure, minCVP minimum central venous pressure, ABG arterial blood gases, PaO2 partial pressure of oxygen, PaCO2 partial pressure of carbon dioxide
*p-value of ≤ 0.05