Table 2 Breathing pattern and ventilator functioning in automatic tube compensation and low-pressure support periods during spontaneous breathing trial

Tidal volume (l)

0.35 (0.30; 0.45)

0.35 (0.32; 0.50)

0.22

Tidal volume (ml/kg predicted body weight)

5.3 (4.5; 6.3)

5.6 (4.7; 7.7)

0.21

Respiratory rate (breaths/min)

27 (21; 33)

25 (21; 28)

0.007

Minute ventilation (l/min)

9.5 (7.4; 11.7)

9.4 (8.3; 10.4)

0.22

Respiratory rate/tidal volume ratio (breaths/min/l)

77 (52; 105)

70 (43; 88)

0.048

Inspiratory time (s)

0.95 (0.78; 1.11)

0.88 (0.80; 1.05)

0.79

Expiratory time (s)

1.44 (1.10; 1.78)

1.72 (1.36; 1.96)

0.05

Inspiratory/expiratory time ratio (%)

0.67 (0.54; 0.81)

0.55 (0.49; 0.71)

0.04

PEEP (cmH₂O)

5 (4; 5)

5 (4–5)

0.60

DPtrig (cmH₂O)

− 2 (− 3; − 1)

− 2 (− 3; − 2)

0.60

DTtrig (s)

0.19 (0.12; 0.22)

0.15 (0.13; 0.19)

0.007

Maximal inspiratory pressure (cmH₂O)

8 (7; 8)

12 (12–12)

0.00006

Maximal inspiratory flow (l/s)

1 (1; 1)

1 (1; 1)

0.18