HFNC is a well-tolerated, noninvasive method of delivering high flow with or without supplemental oxygen. Although it is delivered through nasal canula, it cannot be delivered directly from wall oxygen as the flow needs to be humidified (therefore requiring special machinery). In addition to flow, once the rate is ≥6 L/min HFNC may generate positive expiratory pressures from 2-5 cm H2O.
HFNC has been associated with the decreased need for emergent intubation.
Use of high-flow nasal cannula support in the emergency department reduces the need for intubation in pediatric acute respiratory insufficiency.
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