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The Effects of Flow on Airway Pressure During Nasal High-Flow Oxygen Therapy

Open access
Parke, Rachael L, Eccleston, Michelle L, McGuinness, Shay P·2011·Respiratory Care

Abstract

BACKGROUND: Nasal high-flow oxygen therapy increases the mean nasopharyngeal airway pressure in adults, but the relationship between flow and pressure is not well defined. OBJECTIVE: To determine the relationship between flow and pressure with the Optiflow nasal high-flow oxygen therapy system. METHODS: We invited patients scheduled for elective cardiac surgery to participate. Measurements were performed with nasal high-flow oxygen at flows of 30, 40, and 50 L/min, with the patient's mouth both open and closed. Pressures were recorded over one minute of breathing, and average flows were calculated via simple averaging. RESULTS: With the mouth closed, the mean ± SD airway pressures at 30, 40, and 50 L/min were 1.93 ± 1.25 cm H(2)O, 2.58 ± 1.54 cm H(2)O, and 3.31 ± 1.05 cm H(2)O, respectively. There was a positive linear relationship between flow and pressure. CONCLUSIONS: The mean nasopharyngeal pressure during nasal high-flow oxygen increases as flow increases. Australian Clinical Trials Registry http://www.adhb.govt.nz/achicu/hot_2_airway_pressure.htm.

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Metadata

Authors
Parke, R. L., Eccleston, M. L., & McGuinness, S. P.
Venue
Respiratory Care
Published
2011-08-01
Volume
56
Issue
8
Pages
1151-1155
ISSN
0020-1324 (ISSN-L)
OpenAlex
W2112464900
Cited by
396
References
10
FWCI
4.95
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: The Effects of Flow on Airway Pressure During Nasal High-Flow Oxygen Therapy. https://app.cochat.ai/papers/10.4187/respcare.01106
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Parke, R. L., Eccleston, M. L., & McGuinness, S. P. (2011). The Effects of Flow on Airway Pressure During Nasal High-Flow Oxygen Therapy. Respiratory Care. https://doi.org/10.4187/respcare.01106

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