HFNC
Also written as: HFNC — high-flow nasal cannula
A respiratory support system delivering heated, humidified oxygen at high flow rates through nasal cannula.
Full Definition
High-flow nasal cannula (HFNC) is a respiratory support technique that delivers heated and humidified oxygen at flow rates typically ranging from 20 to 60 liters per minute through specialized nasal cannula. This system provides several physiological benefits including washout of nasopharyngeal dead space, provision of positive end-expiratory pressure, improved mucociliary function, and enhanced patient comfort compared to conventional oxygen therapy. HFNC is commonly used as an alternative to non-invasive ventilation for patients with acute respiratory failure or as a step-down therapy following extubation.
Usage
Usage note: Always capitalize all letters when using the acronym form.
In Context
- "The patient showed improved oxygenation after initiating HFNC at 40 L/min with 60% FiO2." — Clinical progress note
- "HFNC was chosen over BiPAP due to better patient tolerance and comfort." — Treatment rationale