Venturi mask

Venturi mask,

a respiratory therapy face mask designed to allow inspired air to mix with oxygen, which is supplied through a jet at a fixed concentration.

---

mask

1. to cover or conceal, as the masking of the nature of a disorder by the presence of unassociated signs, organisms, etc.; in audiometry, to obscure or diminish a sound by the presence of another sound of different frequency.

2. an appliance for shading, protecting, or medicating the face, e.g. a surgical mask.

3. the dark shaded markings on the face of some dog and cat breeds.

---

Schimmelbusch mask

see schimmelbusch mask.

Venturi mask

see venturi mask.

---

venturi

a tube with a decrease in the inside diameter that is used to increase the flow velocity of the fluid and thereby cause a pressure drop; used to measure the flow velocity (a venturimeter) or to draw another fluid into the stream.

---

venturi mask

a type of disposable mask used to deliver a controlled oxygen concentration to a patient. The flow of 100% oxygen through the venturi draws in a controlled amount of room air (21% oxygen). Commonly available masks deliver 24, 28, 31, 35 or 40% oxygen.

venturi nebulizer

a type of nebulizer used in aerosol therapy. The pressure drop of gas flowing through the venturi draws liquid from a capillary tube. As the liquid enters the gas stream it breaks up into a spray of small droplets.