Oxygen Therapy
●Venturi masks permit a precise upper limit for the FiO2, preferable for patients at risk of hypercapnia. Venturi masks can deliver an FiO2 of 24, 28, 31, 35, 40, or 60%.
●Nasal cannula can provide flow rates up to 6 L per minute with an associated FiO2 of approximately 40%
●When a higher FiO2 is needed, simple facemasks can provide an FiO2 up to 55% using flow rates of 6 to 10 L.
●Non-rebreathing masks with a reservoir, one-way valves, and a tight face seal can deliver an inspired oxygen concentration up to 90%
●High-flow nasal cannula (HFNC) provide supplemental oxygen (adjustable FiO2) at a high flow rate (up to 60 L/min that results in a low level of continuous positive airway pressure).
No Comments