Table 1 Patients’ characteristics

Age (years)

74 (10)

Female, n (%)

6 (25%)

Body Mass Index (kg m⁻²)

27 (7)

Height (cm)

168 (9)

Days on mechanical ventilation at enrollment

9 [3–21]

Patients with tracheostomy on study day, n (%)

7 (30%)

PEEP (cmH₂O)

6 (1)

Expiratory trigger

0.25 [0.20–0.33]

Respiratory system compliance (mL cmH₂O⁻¹)

47 [35–80]

Respiratory system resistance (cmH₂O L⁻¹ s⁻¹)

11 [7–15]

Lung compliance (mL cmH₂O⁻¹)

84 [37–129]

Lung resistance (cmH₂O L⁻¹ s⁻¹)

12 [9–15]

FIO₂

0.4 (0.08)

pH

7.46 (0.04)

PaCO₂ (mmHg)

38 (5)

PaO₂ (mmHg)

88 (25)

Hospital mortality, n (%)

4 (16%)

Total length of stay in ICU (days)

25 [15–35]

Main diagnosis at ICU admission

 Pneumonia

7 (29%)

 COPD exacerbation

3 (12.5%)

 Sepsis

4 (17%)

 Trauma

3 (12.5%)

 Other

7 (29%)