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Longitudinal Assessment of Sleep Apnea in the Year After Stroke in a Population-Based Study

Lynda D Lisabeth1,2, Guanghao Zhang3, Ronald D Chervin4

  • 1Department of Epidemiology (L.D.L., L.B.M.), University of Michigan School of Public Health, Ann Arbor.

Stroke
|July 24, 2023
PubMed

Insights

Sleep-disordered breathing severity remained stable in the year after stroke, with higher obstructive apnea index in Mexican Americans. Central apnea index increased in non-Hispanic Whites but not Mexican Americans post-stroke.

Area of Science:

  • Neurology
  • Sleep Medicine
  • Public Health

Background:

  • Stroke is a leading cause of disability, and sleep-disordered breathing (SDB) is a common comorbidity.
  • Understanding SDB changes post-stroke is crucial for patient management and outcomes.

Purpose of the Study:

  • To characterize the change in SDB severity in the year following stroke.
  • To examine these changes overall and by ethnicity.

Main Methods:

  • Utilized data from the Brain Attack Surveillance in Corpus Christi Project.
  • Portable sleep apnea testing (ApneaLink Plus) was conducted at baseline and 3, 6, and 12 months post-stroke for 414 first-ever ischemic stroke patients.
  • Generalized estimating equations analyzed time and ethnicity effects on SDB severity, adjusting for confounders.

Main Results:

  • Obstructive apnea index significantly increased over the year post-stroke (P<0.01).
  • Respiratory event index and obstructive apnea index were higher in Mexican American individuals compared to non-Hispanic Whites.
  • Central apnea index increased in non-Hispanic Whites but remained stable in Mexican Americans (ethnicity-time interaction, P=0.01).

Conclusions:

  • SDB severity is largely stable in the year following stroke.
  • Findings suggest early assessment and treatment for SDB post-stroke may be warranted.
  • Results challenge previous reports of diminishing SDB severity over time.
Abstract

Keywords:
brainethnicityischemic strokesleep apnea syndromes

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