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Sleep-disordered breathing and poststroke outcomes.

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Sleep-disordered breathing negatively impacts stroke recovery, leading to worse functional and cognitive outcomes. Treating sleep-disordered breathing may help reduce ethnic disparities in stroke outcomes.

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Public Health

Background:

  • Sleep-disordered breathing (SDB) is prevalent in stroke patients.
  • Ethnic disparities exist in stroke outcomes, particularly affecting Mexican Americans.
  • The specific impact of SDB on stroke outcomes and ethnic disparities requires further investigation.

Purpose of the Study:

  • To investigate the association between SDB and post-stroke outcomes.
  • To determine if SDB contributes to ethnic disparities in stroke outcomes among Mexican Americans.

Main Methods:

  • A cohort of 995 ischemic stroke patients was studied.
  • Home sleep apnea tests were used to diagnose SDB (respiratory event index ≥10).
  • Outcomes (neurologic, functional, cognitive, quality of life) were assessed at 90 days post-stroke using regression models.

Main Results:

  • SDB was diagnosed in 62.8% of patients.
  • SDB was linked to poorer functional and cognitive outcomes at 90 days.
  • SDB explained 9-10% of ethnic differences in functional and cognitive outcomes, with a stronger association in Mexican Americans.

Conclusions:

  • SDB is associated with worse functional and cognitive outcomes post-stroke.
  • Treating SDB could potentially mitigate ethnic disparities in stroke recovery.
  • Functional and cognitive outcomes are suitable endpoints for future SDB treatment trials in stroke patients.