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An Upper Airway Crisis 

An Upper Airway Crisis
An Upper Airway Crisis

Mazen O. Al-Qadi

and Mark T. Keegan

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date: 27 February 2021

Laryngospasm is a potentially life-threatening event that is characterized by spasm of the glottic muscles, which leads to reflex partial or complete upper airway obstruction. Contraction of the intrinsic laryngeal muscles is a protective reflex of the airway (during swallowing) that occurs through stimulation of the afferent fibers of the superior laryngeal nerve. Usually inhibited, it may be provoked by abnormal excitation, such as “light” anesthesia.

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