Low Flow Nasal Prong Oxygen
Used to deliver Oxygen at low flow rates 2-4L.
Approximate oxygen concentrations:
Nasal prongs are available in 3 different sizes (neonatal, paediatric and adult).
Maximum 2L/minute in infants/children <2yrs
Maximum 4L/min over 2yrs
Any flows greater than this result in discomfort to the patient, drying of the nasal passages and epistaxis.
Simple, convenient to use and inexpensive
Rebreathing of CO2 is not a potential complication
Well tolerated and allows patient to eat and drink.
Not suitable if nasal passages are blocked or in those that are mouth breathers