Table 4 Respiratory parameters at the weaning start and end

VT (ml)

491 (350–611)

515 (413–612)

0.509

500 (420–600)

500 (450–630)

0.535

f (breaths/min)

20 (16–24)

20 (17–24)

0.947

17 (15–20)

18 (17–20)

0.354

PSV (cmH₂O)

8 (7–10)

10 (8–12)

0.007

8 (7–8)

5 (5–8)

0.015^a

PEEP (cmH₂O)

8 (8–10)

8 (8–10)

0.944

8 (7–8)

5 (5–5)

<0.001^b

FiO₂ (%)

0.30 (0.25–0.30)

0.30 (0.25–0.30)

0.499

0.30 (0.25–0.30)

0.30 (0.25–0.30)

0.572

SpO₂ (%)

99 (98–100)

99 (98–100)

0.774

99 (98–100)

99 (98–99)

0.617

P_0.1 (cmH₂O)

2.5 (0.7–4.2)

1.3 (0.7–2.5)

0.201

2.8 (0.6–4.1)

1.6 (1.2–2.4)

0.201

EtCO₂ Mean (SD)

35.7 (7.4)

33.6 (8.2)

0.422

35.4 (7.2)

34.9 (6.6)

0.826