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. Author manuscript; available in PMC: 2017 Jun 1.
Published in final edited form as: Semin Fetal Neonatal Med. 2016 Feb 18;21(3):162–173. doi: 10.1016/j.siny.2016.02.001

Fig. 9.

Fig. 9

Monitor view showing waveforms and variable settings interfaced with VDR4 (Percussionaire, Sand Point, ID, USA) for HFNV support. The oscillatory pressure pulses are delivered continuously throughout both the inspiratory phase of convective breaths as well as during the expiratory or CPAP phase. The pressure measurements are obtained proximally at the ventilator, not at or beyond the nasal prong interface.