Table 7.

Suggested settings for Nasal High Frequency Ventilation.

Frequency, Hz	Start at 6–8 Hz; May decrease to 4 Hz in patients with hypercapnia; If using HFJV, start at 300 bpm (5 Hz) and may decrease to 240 bpm (4 Hz)
Amplitude, cmH2O	MAPx2; Start at 20–30 cmH2O; May increase to as high 70 cmH2O. If using during weaning, set Amplitude equaling PIP prior to extubation
I: E ratio	Start at 1:1; May change to 1:2 in cases of gas trapping; If using HFJV, jet valve on time: 20 ms and may increase to 30–34 ms to improve oxygenation and increase tidal volume delivery
Mean Airway Pressure (MAP), cmH2O	MAP: Start with the same MAP as on SIMV or 2–3 cmH2O higher than CPAP; Start at 8–10 cmH2O; May increase as needed based on FiO2 and or lung expansion
NIPPV Back up rate	If available, use rates between 30 and 40 bpm; If using HFJV, keep the NIPPV settings same as before adding NHFJV

I:E ratio, Inspiration: Expiration ratio; HFJV, high frequency jet ventilator; NIPPV, nasal intermittent positive pressure ventilation; MAP, Mean Airway Pressure; SIMV, Synchronized intermittent mandatory ventilation.