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. 2020 May 24;24(1):248.
doi: 10.1186/s13054-020-02980-w.

Effect of flow and cannula size on generated pressure during nasal high flow

Maximilian Pinkham  1 , Stanislav Tatkov  2
Affiliations

Effect of flow and cannula size on generated pressure during nasal high flow

Maximilian Pinkham et al. Crit Care. .
No abstract available

Keywords: Acute respiratory failure; COVID-19; Nasal cannula; Nasal high flow; Positive airway pressure.

PubMed Disclaimer

Conflict of interest statement

M. P. & S. T. are employees of Fisher & Paykel Healthcare Ltd.

Figures

Fig. 1
Fig. 1
The graph shows the positive airway pressure, cmH2O, that is generated by nasal high flow (NHF) using a smaller cannula (O.D. 6.1 mm) and larger cannula (O.D. 7.2 mm) in “nares” with two different diameters: 10 mm (left panel) and 9 mm (right panel) in the bench top model. Pressure generated by NHF can be increased by higher flow and by occluding a larger area of the nare, which can be achieved by increasing the cannula size
See this image and copyright information in PMC

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