Table 2 Initial parameters for high-frequency oscillatory ventilation

FiO₂

Same FiO₂ that patient was receiving during conventional ventilation, adjust to SpO₂ > 90%

Mean airway pressure (mPaw)

3–5 cmH₂O higher than patient was receiving during conventional ventilation, titrate upward to reduce FiO₂ below 0.6

Bias flow

40 l/min, titrate to exceed any spontaneous inspiratory efforts

Pressure amplitude of oscillation ('power' or ΔP)

Titrate to produce a 'wiggle', or body movement, from shoulders to midthigh

Frequency

5 Hz, then titrate to PaCO₂

Percentage inspiratory time

33%