High Flow Nasal Cannula

Also Known As: High Flow Nasal Cannula, Heated Humidified High Flow, High Flow Nasal Oxygen

Heated humidified high-flow (HHHF) therapy, often also high flow nasal cannula(e) (HFNC) or high flow nasal oxygen (HFNO), is a type of respiratory support method that delivers a high flow (liters per minute) of medical gas to a patient through an interface (nasal cannulae) intended to create a wash-out of the upper airway. The applied gas is heated to best match human body temperature (37 °C) and humidified targeting ideal body saturation vapor pressure. It is used in acute and chronic breathing problems.

High-flow therapy
HFT diagram.png
Illustration of a patient using HFT device
Other names High flow nasal cannula
ICD-10-PCS Z99.81

A relevant parameter is the fraction of inspired oxygen (FiO2).

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