Table 1 Patient characteristics

Sex male—no. (%)

8 (62%)

Median age [IQR]—year

65 [57–72]

Median BMI [IQR]—kg.m⁻²

29 [24–37]

Median delay between ARDS onset and CT [IQR]—day

1 [0–1]

ARDS severity—no. (%)

        Moderate

       Severe without ECMO

       Severe under ECMO

2 (15%)

9 (70%)

2 (15%)

COVID-19—no. (%)

12 (92%)

Median SAPS 2 at ICU admission [IQR]

42 [38–53]

Median SOFA score at inclusion [IQR]

8 [7–9]

Vasopressor—no. (%)

11 (85%)

Median VT at inclusion [IQR]—mL.kg⁻¹ PBW

6.0 [5.9–6.0]

Median PEEP at inclusion [IQR]—cmH₂O

8 [5–10]

Median PEEP_tot,rs at inclusion [IQR]—cmH₂O

9 [6–10]

Median P_plat,rs at inclusion [IQR]—cmH₂O

20 [18–21]

Median ∆P_rs at inclusion [IQR]—cmH₂O

11 |9–13]

Median pH at inclusion [IQR]

7.36 [7.30–7.39]

Median PaO₂ at inclusion [IQR]—Torr

70 [62–75]

Median FiO₂ or FmO₂ at inclusion [IQR]—% ^†

100 [90–100]

Median PaCO₂ at inclusion [IQR]—Torr

47 [40–49]

Day-90 mortality—no. (%)

6 (46%)

Median ventilator-free days at day-60 [IQR]—day

0 [0–38]

Median ICU length of stay [IQR]—day

27 [10–44]