Table 1 Estimated positive end-expiratory pressure (PEEP) and change of PEEP during a change of ventilatory strategy

A: First strategy PEEP (cmH₂O)

HFNC

–

3

3

NIV

6.3 ± 1.4

–

7.1 ± 2.1

MV

7.7 ± 2.1

7.1 ± 1.8

–

B: Second strategy PEEP (cmH₂O)

HFNC

–

5.8 ± 1.2

11.3 ± 4.0

NIV

3

–

13.1 ± 2.9

MV

3

6.5 ± 1.6

–

C: Estimated change in PEEP (cmH₂O)

HFNC

–

2.8 ± 1.2

8.3 ± 4.0

NIV

 − 3.3 ± 1.4

–

6.0 ± 3.2

MV

 − 4.7 ± 2.1

 − 0.5 ± 2.0

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