Table 3 Evolution of ventilatory settings and gas exchanges in 16 ARDS patients

Ventilatory mode (VC/PSV), number

16/0

16/0

16/0

16/0

15/1

14/2

TV (mL kg⁻¹)

5.3 [4.4–5.9]

3.8 [3.5–4.1]*

3.7 [3.5–4.1]*

3.7 [3.6–4.1]*

3.9 [3.5–4.2]*

3.8 [3.3–4.1]*

RR (min⁻¹)

26 [22–28]

23 [20–25]

22 [19–25]*

22 [20–25]*

21 [18–23]*

23 [17–26]

Minute ventilation (L min⁻¹)

8.5 [6.0–9.5]

5.2 [4.0–6.1]*

4.5 [3.9–6.3]*

4.3 [3.9–6.3]*

4.6 [3.9–5.8]*

5.3 [4.0–6.9]*

PEEP (cmH₂O)

13 [10–15]

14 [10–15]

14 [10–18]

14 [10–18]

14 [12–18]

14 [11–17]

Plateau pressure (cmH₂O)

26 [24–27]

–

26 [22–29]

25 [22–27]

Driving pressure (cmH₂0)

10 [8–15]

–

7 [6–10]*

9 [8–10]*

PaCO₂ (kPa)

6.7 [6.1–7.5]

5.7 [5.1–7.0]*

5.6 [4.8–7.6]

5.4 [4.8–8.2]

pH

7.31 [7.25–7.41]

7.39 [7.30–7.42]

7.40 [7.33–7.45]

7.41 [7.35–7.43]

PaO₂/FiO₂

145 [116–161]

207 [127–226]*

182 [149–211]

201 [168–263]*

Neuromuscular blockers use, number

15 (94%)

–

13 (81%)

9 (56%)