laryngospasm

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laryngospasm

[lə′riŋ·gə‚spaz·əm]
(medicine)
Sudden and uncontrollable closure of the larynx; often seen in anaphylactic reactions.
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Management of laryngeal spasm can be quite difficult, but not impossible.
Coroner Aidan Cotter heard from several expert witnesses how Mrs Yardley may have suffered an unforeseen adverse reaction to the drugs, a pulmonary embolism or blood clot, a cardiac arrhythmia, or a laryngeal spasm - an involuntary closure of the airway.
This continues until they have to breathe, thereby involuntarily inhaling a large volume of water, which either enters the lungs (in most instances) or reaches the larynx--producing the laryngeal spasm that results in dry drowning.