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Obstructive sleep apnoea.

Atul Malhotra1, David P White

  • 1Brigham and Women's Hospital and Massachusetts General Hospital, Harvard Medical School, Boston, MA 02115, USA. Amalhotra1@partners.org

Lancet (London, England)
|July 23, 2002
PubMed
Summary
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Obstructive sleep apnoea (OSA) causes daytime sleepiness and increases accident risk. Continuous positive airway pressure treatment for OSA improves sleepiness and hypertension.

Area of Science:

  • Sleep Medicine
  • Respiratory Medicine
  • Cardiology

Background:

  • Obstructive sleep apnoea (OSA) is a growing health concern with significant neurocognitive and cardiovascular consequences.
  • Key causes include pharyngeal anatomical abnormalities, upper airway muscle dysfunction, and unstable ventilatory control, leading to airway collapse during sleep.

Purpose of the Study:

  • To summarize the causes, diagnosis, consequences, and treatment of obstructive sleep apnoea.
  • To highlight the link between OSA and hypertension, and its impact on sleepiness and accident risk.

Main Methods:

  • Diagnosis relies on characteristic symptoms like snoring and daytime sleepiness, physical signs such as increased neck circumference, and confirmation via overnight polysomnography.
  • Evaluation of the association between OSA, hypoxemia, hypercapnia, catecholamine surges, and cardiovascular outcomes including hypertension, myocardial infarction, stroke, and heart failure.

Related Experiment Videos

Main Results:

  • Repetitive pharyngeal collapse leads to sleep disruptions, causing significant daytime sleepiness and increasing the risk of accidents.
  • While OSA is linked to hypertension through physiological changes, its direct association with myocardial infarction, stroke, and congestive heart failure remains unproven.

Conclusions:

  • Continuous positive airway pressure (CPAP) is the primary treatment for OSA, effectively reducing sleepiness.
  • CPAP therapy also demonstrates benefits in managing hypertension associated with obstructive sleep apnoea.