high-flow nasal cannula
Also written as: HFNC — High-Flow Nasal Cannula
Respiratory support delivering heated, humidified gas at flows exceeding patient's inspiratory demand.
Full Definition
A non-invasive respiratory support modality that delivers heated and humidified gas mixtures through nasal prongs at flow rates that exceed the patient's peak inspiratory flow (typically 2-8 L/min in neonates). HFNC provides some degree of positive pressure support, improves respiratory mechanics, and reduces work of breathing. It serves as an intermediate level of support between low-flow nasal cannula and continuous positive airway pressure, offering better tolerance and ease of care.
Usage
Usage note: Hyphenate compound modifier; specify flow rate and FiO2 parameters in clinical documentation.
In Context
- "The preterm infant was successfully extubated to HFNC at 6 L/min with 30% oxygen." — Medical progress note
- "High-flow nasal cannula therapy reduced the need for reintubation compared to traditional nasal cannula." — Research abstract