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Sleep disorders after cardiac arrest: Prevalence and relation with cognitive function.

A B Glimmerveen1,2, J Bos1, E G J Zandbergen1

  • 1Department of Neurology, Rijnstate Hospital, Arnhem, the Netherlands.

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Summary
This summary is machine-generated.

Sleep disorders, particularly obstructive sleep apnea, are common in cardiac arrest survivors and linked to cognitive impairment. Treating sleep apnea may improve cognitive function in these patients.

Keywords:
Cardiac arrest survivorsCognitive functionSleep disorder

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Area of Science:

  • Neurology
  • Sleep Medicine
  • Cardiology

Background:

  • Long-term cognitive impairment is prevalent in cardiac arrest survivors, often attributed to postanoxic encephalopathy.
  • Sleep disorders are frequently observed post-brain injury and can exacerbate cognitive deficits.

Purpose of the Study:

  • To determine the prevalence of sleep disorders in cardiac arrest survivors.
  • To investigate the association between sleep disorders and cognitive function in this population.

Main Methods:

  • Thirty cardiac arrest survivors underwent neuropsychological testing, questionnaires, and polysomnography one year post-event.
  • Objective sleep parameters (sleep apnea, leg movements) and subjective reports were correlated with cognitive test performance.

Main Results:

  • 36% had moderate to severe obstructive sleep apnea (OSA); 43% had moderate to severe periodic limb movements during sleep.
  • OSA correlated with poorer executive functioning and memory. Fewer sleep cycles were linked to reduced attention.
  • Subjective sleep and mood assessments did not correlate with cognitive outcomes.

Conclusions:

  • Moderate to severe sleep disorders, especially OSA, are common in cardiac arrest survivors.
  • Obstructive sleep apnea is significantly associated with impaired executive functioning and memory.
  • Diagnosing and treating OSA could be a therapeutic target for improving cognition in cardiac arrest survivors.