Table 1 Patient and maneuver characteristics

GA at birth, weeks

24^+ 0 [22^+ 6 – 27^+ 5]

Birth weight, g

612 [410–920]

Female

15 (37.5%)

Antenatal steroids:

 Incomplete

15 (37.5%)

 Complete

23 (57.5%)

Postnatal age, days

4 [1–23]

Weight, g

701 [435–990]

Supine

31 (77.5%)

Receiving muscle relaxant

12 (30%)

Indication for recruitment maneuver:

 After surfactant

1 (2.5%)

 HFOV start

4 (10%)

 Position change

15 (37.5%)

 SpO₂/FiO₂drop

4 (10%)

 Atelectasis

7 (17.5%)

 As per protocol in the previous study (12 h intervals)

9 (22.5%)

CDP step duration, mm:ss

6:10 [1:33–15:32]

Number of steps

14 [9–20]

Maneuver duration, min

92 [51–135]

CDP_i, cmH₂O

10.5 [7–13]

CDP_max, cmH₂O

20 [16–24]

CDP_min, cmH₂O

8 [5–13]

BPD:

 Dead no BPD

7 (17.5%)

 No BPD

8 (20%)

 BPD_I

10 (25%)

 BPD_II

7 (17.5%)

 BPD_III

6 (15%)

 BPD_IIIA

2 (5%)