High-flow nasal cannula (HFNC) is aheated and humidified systemthat allows prescribed fraction of inspired oxygen (F I O 2) levels to be delivered at very high flow rates. Let鈥檚 now consider how HFNC can help our patients improve their respiratory disease. There are three main proposed benefits of HFNC:
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What is the flow rate of a high flow nasal cannula?
When connected to wall oxygen, this cannula can deliver oxygen at flow rates from 1 to 6 L / min for extended periods of time. Higher flow rates are not well tolerated due to nasal irritation and discomfort. High-flow nasal cannula, or HFNC, is a system that allows oxygen to be delivered to patients at very high flow rates.
What is a heated and humidified high-flow cannula?
The use of the heated and humidified high-flow nasal cannula has become increasingly popular in the treatment of patients with respiratory failure through all age groups.
What are the indications for high-flow nasal cannulas in community-acquired pneumonia?
Community-acquired pneumonia would seem like an ideal indication for the use of the high-flow nasal cannula. The heated, humidified oxygen should allow improved mobilization of secretions, and its ability to minimize oxygen dilution, meet inspiratory demands, and improve end-expiratory lung volumes all seem ideal in patients withpneumonia.
How should a nasal cannula fit?
Each cannula should snuggly fit into the patient鈥檚 nares and prevents entrainment of room air around the cannula, which can occur with standard nasal cannulas. Each manufacturer will also have a max flow rate for each cannula size corresponding to the size and age of the patient.