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Upper airway function and dysfunction in respiration.

R J Pierce1, C J Worsnop

  • 1Department of Respiratory Medicine, Austin and Repatriation Medical Centre, Heidelberg, Victoria, Australia. r.pierce@medicine.unimelb.edu.au

Clinical and Experimental Pharmacology & Physiology
|February 23, 1999
PubMed
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The upper airway is crucial for breathing, speech, and swallowing, but can collapse during sleep, leading to obstructive sleep apnea. This condition severely impacts breathing, causing daytime sleepiness and health problems.

Area of Science:

  • Respiratory Medicine
  • Sleep Medicine
  • Otolaryngology

Background:

  • The upper airway's functions include respiration, air conditioning, and phonation.
  • Its complex musculature modulates airflow but is susceptible to dysfunction.
  • Sleep naturally involves some upper airway collapse and increased resistance.

Purpose of the Study:

  • To highlight the critical roles of the upper airway.
  • To discuss the vulnerability of the upper airway to functional problems.
  • To describe obstructive sleep apnea and laryngeal dysfunctions.

Main Methods:

  • Review of upper airway functions and common pathologies.
  • Analysis of sleep-related airway dynamics.
  • Description of obstructive sleep apnea and laryngeal dysfunction.

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Main Results:

  • Upper airway collapse and increased resistance occur during sleep, even in healthy individuals.
  • Obstructive sleep apnea involves severe airway collapse, necessitating arousal for ventilation.
  • Laryngeal dysfunctions include inspiratory, brief, and expiratory types, mimicking asthma.

Conclusions:

  • Upper airway dysfunction can significantly compromise respiration and overall health.
  • Obstructive sleep apnea leads to significant morbidity, including daytime sleepiness and cardiorespiratory issues.
  • Laryngeal abnormalities represent diverse functional challenges affecting breathing and voice.