Regular group

Improved group

p value*

Frequency of 24-hour sputum suction

5.0 ± 0.5

5.2 ± 0.9

0.362

Total time on mechanical ventilation

40.0 ± 14.6

38.4 ± 14.2

0.687

PICU hospitalization days

4.5 ± 0.6

4.1 ± 0.7

0.047