Nasal cannulae (NC) are used for mild hypoxia, typically in non-acute situations. Nasal cannulae deliver 24 – 30% O2 (maximum flow rate of 4L/min). The NC tubing is pl… See more

Simple face masks (also called Hudson masks) are typically used to treat mild to moderate hypoxia. The mask delivers 30 – 40% O2 (flow rate 5-10 L/min). The mask is positioned … See more

Venturi masks are designed to deliverconstant FiO2 regardless of the patient’s respiratory rate and flow pattern (i.e. a fixed-performance device). They are used to deli… See more

Standard oxygen gases have a drying effecton the mucous membranes that can result in airway damage as well as heat and fluid loss. Humidified oxygen reduces this effect and c… See more