COVID-19 patients n = 112 | Pulmonary non-COVID-19 ARDS patients n = 198 | p value | |
---|---|---|---|
Age, years | 63 [51–72] | 60 [48–71] | 0.196 |
SAPS II | 47 [37–58] | 48 [37–59] | 0.562 |
Female sex, n | 36 (32) | 50 (25) | 0.193 |
BMI, kg m−2 | 29 [26–33] | 26 [23–29] | < 0.001 |
ARDS severity, n | |||
Mild | 20 (18) | 51 (26) | 0.112 |
Moderate | 66 (59) | 117 (59) | 0.978 |
Severe | 26 (23) | 30 (15) | 0.706 |
Tidal volume, ml kg−1 PBW | 6.1 [5.9–6.9] | 6.9 [6.1–8.1] | < 0.001 |
Respiratory rate, cycles min−1 | 27 [25–30] | 30 [25–35] | < 0.001 |
Volume minute, L min−1 | 10.5 [9.3–11.8] | 11.7 [10–14] | < 0.001 |
PaCO2, mmHg | 38 [34–43] | 43 [37–49] | < 0.001 |
PEEP set, cmH2O | 12 [10–14] | 10 [9–12] | 0.072 |
Plateau pressure, cmH2O | 24 [20–27] | 25 [22–28] | 0.655 |
Respiratory system compliance, ml cmH2O−1 | 35 [28–43] | 28 [23–36] | < 0.001 |
PaO2/FiO2, mmHg | 143 [103–184] | 134 [98–178] | 0.404 |
A-a O2 gradient, mmHg | 347 [242–514] | 351 [271–485] | 0.554 |
Ventilatory ratio | 1.5 [1.3–2.0] | 2.0 [1.6–2.6] | < 0.001 |
Cause of lung injury, n | |||
COVID-19 | 112 (100) | – | – |
Pneumonia | – | 151 (76) | – |
Aspiration | – | 47 (24) | – |