Venturi mask

Venturi (air-entrainment) mask

A medical device to deliver inspired air mixed with a known oxygen concentration to patients on controlled oxygen therapy. Typical oxygen concentration is 24-50%. Venturi masks are considered high-flow oxygen therapy devices. This is because they are able to provide total inspiratory flow at a specified FiO2 to patients. The kits usually include multiple jets, in order to set the desired FiO2, which are usually colour coded.

The colours and respective delivery concentrations are:

ColourConcentration
Blue24%
White28%
Yellow35%
Red40%
Green60%