Variables | PEEP 5 61 patients | PEEP 15 61 patients | p |
---|---|---|---|
Plateau pressure, cmH2O | 17 ± 3 | 28 ± 3 | < 0.001 |
Driving pressure, cmH2O | 12 ± 3 | 13 ± 3 | 0.071 |
Respiratory system elastance, cmH2O/L | 23 [19–27] | 24 [21–31] | 0.093 |
Lung elastance, cmH2O/L | 18 [15–22] | 19 [17–25] | 0.049 |
Chest wall elastance, cmH2O/L | 5 [3–6] | 4 [3–6] | 0.845 |
Lung stress, cmH2O | 13.1 ± 3.1 | 22.3 ± 4.0 |  < 0.001 |
Mechanical power, J/min | 16.7 ± 5.7 | 26.1 ± 6.4 |  < 0.001 |
Mechanical Power_Compliancers, J/min/(mL/cmH2O) | 0.36 [0.27–0.50] | 0.61 [0.51–0.77] |  < 0.001 |
PaO2, mmHg | 63 [55–76] | 84 [74–99] |  < 0.001 |
PaO2/FiO2, mmHg | 82 [66–138] | 127 [90–184] |  < 0.001 |
Right-to-left shunt, % | 47 ± 15 | 35 ± 12 |  < 0.001 |
PvO2, mmHg | 42 ± 7 | 47 ± 7 |  < 0.001 |
ScvO2, % | 74 ± 8 | 79 ± 6 |  < 0.001 |
Ca-vO2, mL | 2.8 [2.3–3.2] | 3.0 [2.4–3.4] | 0.024 |
PaCO2, mmHg | 48 ± 9 | 50 ± 9 |  < 0.001 |
Ventilatory ratio | 1.66 ± 0.39 | 1.74 ± 0.37 | 0.002 |
Estimated physiological dead space | 0.50 [0.43–0.58] | 0.52 [0.42–0.60] |  < 0.001 |