Table 3.

Mucosal injury score and humidification rate settings during the course of superimposed high-frequency jet ventilation

	Group A	Group B
Initially
Mucosal injury score	0	0
Humidification rate setting (ml/h)	20	20
After 20 min
Mucosal injury score	0	1
Humidification rate setting (ml/h)	20	30
After 2 h
Mucosal injury score	1	2
Humidification rate setting (ml/h)	30	40
After 2 days
Mucosal injury score	2	3
Humidification rate setting (ml/h)	40	45
After 4 days
;Mucosal injury score	1	3
Humidification rate setting (ml/h)	35	50