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Venturi mask explained The venturi mask , also known as an air-entrainment mask , is a medical device to deliver a known oxygen concentration to patients on controlled oxygen therapy. [1] [2] The mask was invented by Moran Campbell at McMaster University Medical School as a replacement for intermittent oxygen treatment. Dr. Learn about Venturi masks, a type of oxygen delivery device that works based on the Venturi effect. Compare their strengths and weaknesses, and discover a new and powerful alternative: Oxy2Mask, a simple and comfortable mask that delivers precise oxygen levels. The table in the advanced (use slider at the top left) view of this article shows flow set on the Venturi (Air entrainment mask ) – the total flow (O2 flow + air entrained) and the FIO2. This helps demonstrate why at low FIO2 – the Venturi mask provides a far more consistent FIO2 than nasal cannula or simple facemask. The venturi mask is described as delivering concentrations from 24-40% oxygen at flow rates from 4-10 L/min depending on its color coding. Proper use and any special considerations for each system are provided.
