Nasal high flow reduces dead space.

Winfried MöllerSheng FengUlrike DomanskiKarl-Josef FrankeGülnaz CelikPeter BartensteinSven BeckerGabriele MeyerOtmar SchmidOliver EickelbergStanislav TatkovGeorg Nilius

Published in: Journal of applied physiology (Bethesda, Md. : 1985) (2016)

Clearance of expired air in upper airways by nasal high flow (NHF) can be extended below the soft palate and de facto causes a reduction of dead space. Using scintigraphy, the authors found a relationship between NHF, time, and clearance. Direct measurement of CO2 and O2 in the trachea confirmed a reduction of rebreathing, providing the actual data on inspired gases, and this can be used for the assessment of other forms of respiratory support.

Keyphrases

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