Variables | Low PaO2/FiO2 < 81.8 31 patients | High PaO2/FiO2 ≥ 81.8 30 patients | p |
---|---|---|---|
Δ15-5 Plateau pressure, cmH2O | 8 [10–11] | 11 [10–13] | 0.147 |
Δ15-5 Driving pressure, cmH2O | 0 [− 2 to 1] | 1 [0–3] | 0.147 |
Δ15-5 Respiratory system elastance, cmH2O/L | 0 [− 3 to 3] | 3 [0–6] | 0.126 |
Δ15-5 Lung elastance, cmH2O/L | 2 [− 2 to 4] | 3 [1–7] | 0.257 |
Δ15-5 Chest wall elastance, cmH2O/L | 0 [− 2 to 1] | 0 [− 2 to 2] | 0.373 |
Δ15-5 Lung stress, cmH2O | 9 [7–11] | 9 [8–13] | 0.534 |
Δ15-5 Mechanical power, J/min | 9 [8–11] | 10 [9–11] | 0.351 |
Δ15-5 Mechanical Power_Compliancers, J/min/(mL/cmH2O) | 0.21 [0.12–0.34] | 0.30 [0.17–0.37] | 0.436 |
Δ15-5 PaO2, mmHg | 26 [16–38] | 16 [4–23] | 0.012 |
Δ15-5 PaO2/FiO2, mmHg | 31 [16–55] | 28 [9–42] | 0.212 |
Δ15-5 Right-to-left shunt, % | − 16 [− 26 to − 10] | 0 [− 11 to 0] |  < 0.001 |
Δ15-5 PvO2, mmHg | 3 [2–11] | 1 [0–2] |  < 0.001 |
Δ15-5 ScvO2, % | 8.5 [4.4–13.4] | 0.6 [− 1 to 3] |  < 0.001 |
Δ15-5 Ca-vO2, mL | 1.3 [0.9–1.8] | 0.4 [0.0–0.6] |  < 0.001 |
Δ15-5 PaCO2, mmHg | 1 [− 2 to 3] | 2 [1–5] | 0.110 |
Δ15-5 Ventilatory ratio | 0.04 [− 0.09 to 0.10] | 0.08 [− 0.02 to 0.19] | 0.065 |
Δ15-5 Estimated physiological dead space | 0.01 [− 0.02 to 0.03] | 0.02 [0.01–0.05] | 0.070 |