Avoiding confusion in high flow oxygen therapy concepts
Journal Title: Journal of Pulmonology and Respiratory Research - Year 2017, Vol 1, Issue 1
Abstract
Oxygen therapy is the main supportive treatment in hypoxemic respiratory failure and has traditionally been delivered using low and high flow devices. However, the maximal flow rates that these devices can deliver are limited because of the insufficient heat and humidity provided to the gas administered. Low flow devices such as the nasal cannula, conventional face mask and reservoir bag deliver a flow rate of up to 15 L/min by administering more variable oxygen fractions (FiO2), depending on the patient’s respiratory pattern, peak inspiratory flow and characteristics of the devices. Conventional high flow devices, such as venturi type masks, utilize a constant flow of oxygen through precisely sized ports, entraining the ambient air, using the Bernoulli principle, providing a more constant inspired oxygen fraction. However, they are less tolerated than nasal cannulas because they are less comfortable and the insufficient humidification and heating of the gas delivered [1].
Authors and Affiliations
García G, Agosta M, Valencia P, Mercedes E, Sarhane Y, Díaz-Lobato S
Keywords
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- EP ID EP560440
- DOI 10.29328/journal.jprr.1001001
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