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Narrowing - Nat..

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narrowing

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Decreasing the width or diameter of some space or channel, e.g., narrowing of the size of the coronary arteries, usually due to some pathological process.

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NASA

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National Aeronautics and Space Administration.

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nasal

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(nā′zăl) [L. nasus, nose] 1. Pert. to the nose. 2. Uttered through the nose. 3. A nasal bone.

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nasal flaring

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Intermittent outward movement of the nostrils with each inspiratory effort; indicates an increase in the work of breathing.

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nasal gavage

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SEE: enteral tube feeding.

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nasal meatus

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SEE: under meatus.

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nasal septum

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SEE: nasal septum.

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nasal tip

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The inferior third of the nose.

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nasal trumpet

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Nasopharyngeal airway.

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nasal width

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The maximum width of the nasal aperture.

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nascent

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(năs′ĕnt; nā′sĕnt) [L. nascens, born] 1. Just born; incipient or beginning. 2. Pert. to a substance being set free from a compound.

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nasendoscopy, nasoendoscopy

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(nāz″en-dos′kŏ-pĕ, nā″zō-en-dos′kŏ-pĕ) [nas(o)- + endoscopy] Inspection of the nose, sinuses, pharynx, and larynx with a small angled endoscope inserted into a nostril.

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nasendoscope

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(nāz″en′dŏ-skōp″), n. nasoendoscope (nā″zō-en′dŏ-skōp″), n.

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nasion

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(nā′zē-on″) [L. nasus, nose + Gr. -ion, a diminutive suffix] The point at which the median anteroposterior plane cuts across the nasofrontal suture.

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naso-

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[L. nasus, nose] Prefix meaning-nose. SEE: rhino-.

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nasobiliary

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(nā″zō-bil′ē-er″ē) [naso- + biliary] Pert. to the nasal passages and the gallbladder, as when a catheter is inserted through the nose and enters the common bile duct via the upper gastrointestinal tract.

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nasociliary

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(nā″zō-sil′ē-er-ē) [naso- + ciliary (2)] 1. Pert. to the nose, eyebrows, and eyes 2. Pert. to the nerves supplying the nose, eyebrows, and eyes.

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nasoduodenal tube

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(nā″zō-dū-ă-dē′năl,-doo, nā″zō-dū-ŏd′ĕ-năl,-doo) A flexible tube of silicone or a similar synthetic material, inserted through the nose into the duodenum for short-term enteral feeding. The small weight on the distal end of the tube moves the tube into place through the stomach into the duodenum. Aspiration is less likely than with a nasogastric tube.

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nasofrontal

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(nā″zō-frŏnt′ăl) [naso- + frontal (2)] Pert. to nasal and frontal bones.

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nasogastric

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(nā″zō-găs′trĭk) [″ + Gr. gaster, belly] Pert. to the nasal passages and the stomach, esp. relating to intubation.

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nasogastric tube

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A tube inserted through the ...

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