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High-flow nasal cannula oxygen therapy in children: a clinical review.

High-flow nasal cannula oxygen therapy in children: a clinical review.

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High-flow nasal cannula (HFNC) is a relatively safe and effective noninvasive ventilation method that was recently accepted as a treatment option for acute respiratory support before endotracheal intubation or invasive ventilation. The action mechanism of HFNC includes a decrease in nasopharyngeal resistance, washout of dead space, reduction in inflow of ambient air, and an increase in airway pressure.