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In medicine, a nasopharyngeal airway (NPA), nasal trumpet (because of its flared end), or nose hose, is a type of airway adjunct, a tube that is designed to be inserted through the nasal passage down into the posterior pharynx to secure an open airway. It was introduced by Hans Karl Wendl in 1958. [1]
An orinasal mask, oro-nasal mask or oral-nasal mask [1] is a breathing mask that covers the mouth and the nose only. It may be a complete independent item, as an oxygen mask , or on some anaesthetic apparatuses, or it may be fitted as a component inside a fullface mask on underwater breathing apparatus , a gas mask or an industrial respirator ...
A breathing mask, also called a facepiece, is a component which covers the mouth and nose, sometimes also the eyes and other parts of the face, and may seal against the face. A breathing mask is usually effective, allows mouth and nose breathing, and can usually be sealed adequately without effort by the user.
Nasal strips, designed for humans, in varying colors and sizes. A nasal strip, external nasal dilator strip or nasal dilator strip is a type of adhesive bandage with embedded plastic ribs or splints that is applied across the bridge of the nose and sides of the nostrils, to assist in keeping the airway open.
Involutional stenosis is probably the most common cause of nasolacrimal duct obstruction in older people. It affects women twice as frequently as men. Although the inciting event in this process is unknown, clinicopathologic study suggests that compression of the lumen of the nasolacrimal duct is caused by inflammatory infiltrates and edema.
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.
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