Authorea
DOI: 10.22541/au.157878443.37845161
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Estimation of oxygen concentration in the airway during inspiration and pre-inspiration with a nasal cannula

Abstract: BACKGROUND: In low flow oxygen therapy, FIO2 is difficult to measure in spontaneously breathing patients due to room air dilution and dead space rebreathing, especial in impairments respiratory mechanics. This study determined oxygen concentrations with different tidal volumes and respiratory rates among different lung mechanics and provided equations to estimate oxygen concentrations during standard nasal cannula oxygen therapy. METHODS: Two Training & Test Lung models were used in this study. One simulated s… Show more

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