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Related Experiment Videos

Sleep-disordered breathing following acute stroke.

J Harbison1, G A Ford, O F W James

  • 1Department of Medicine, University of Newcastle upon Tyne, Freeman Hospital, High Heaton, Newcastle upon Tyne NE7 7DN, UK.

QJM : Monthly Journal of the Association of Physicians
|October 23, 2002
PubMed
Summary

Sleep-disordered breathing is common after stroke, improving within 9 weeks but remaining prevalent. Lacunar strokes, older age, and pre-stroke disability are linked to worse sleep apnea outcomes.

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Cardiovascular Research

Background:

  • Sleep-disordered breathing (SDB) prevalence post-stroke ranges widely (44-72%).
  • The natural course and influencing factors of SDB after acute stroke are not well understood.

Purpose of the Study:

  • To investigate the prevalence and progression of SDB in acute stroke patients.
  • To examine the relationship between SDB and patient factors (age, stroke subtype, pre-stroke handicap) and post-stroke outcomes.

Main Methods:

  • Prospective observational study of acute stroke in-patients.
  • Paired respiratory sleep studies at 2 weeks and 6-9 weeks post-stroke.
  • Assessment of pre-stroke handicap, post-stroke disability, impairment, and sleepiness.

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Main Results:

  • High SDB prevalence: 94% had an Apnea-Hypopnea Index (AHI) ≥10 at 2 weeks.
  • Mean AHI decreased from 31 to 24 (p<0.01) by 6-9 weeks.
  • Worse SDB associated with lacunar strokes, age ≥65, and greater pre-stroke handicap (p<0.05).

Conclusions:

  • SDB significantly improves within 6-9 weeks post-stroke but remains highly prevalent.
  • Lacunar stroke, older age, and pre-stroke handicap are risk factors for more severe SDB.