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Sleep quality and daytime sleepiness are not associated with cognition in heart failure

Fawn A Walter1, David Ede1, Misty A W Hawkins2

  • 1Kent State University, Department of Psychological Sciences, P.O. Box 5190, Kent, OH 44240, USA.

Journal of Psychosomatic Research
|September 8, 2018
PubMed

Insights

Sleep quality and daytime sleepiness do not impact cognitive function in heart failure (HF) patients. Other factors significantly influence cognitive performance in individuals with HF, suggesting a need for further research into these determinants.

Area of Science:

  • Cardiology
  • Neurology
  • Sleep Medicine

Background:

  • Heart failure (HF) is frequently accompanied by cognitive impairments and sleep disturbances.
  • Existing research on the relationship between sleep quality and cognitive function in HF patients presents inconsistent findings.
  • This study investigates the association between sleep quality, daytime sleepiness, and cognitive performance in individuals with HF.

Purpose of the Study:

  • To examine the relationship between sleep quality and cognitive function in stable heart failure patients.
  • To assess the association between daytime sleepiness and cognitive performance in this population.
  • To identify potential factors influencing cognitive function in heart failure.

Main Methods:

  • A cross-sectional analysis of 267 stable heart failure patients from outpatient settings.
  • Cognitive function assessed across global, attention, memory, and executive domains.
  • Sleep quality measured by the Pittsburgh Sleep Quality Index (PSQI) and daytime sleepiness by the Epworth Sleepiness Scale (ESS).
  • Multiple hierarchical linear regressions controlled for demographic and clinical variables.

Main Results:

  • No statistically significant association was found between cognitive function and sleep quality after adjusting for multiple comparisons.
  • Similarly, no significant association was observed between cognitive function and daytime sleepiness.
  • These findings suggest that sleep parameters may not be primary drivers of cognitive deficits in this HF cohort.

Conclusions:

  • Cognitive function in heart failure patients is not significantly associated with sleep quality or daytime sleepiness.
  • Other unmeasured or unadjusted factors likely play a more substantial role in cognitive performance.
  • Further research is warranted to explore alternative determinants of cognitive impairment in heart failure.
Abstract

Keywords:
CognitionDaytime sleepinessHeart failureNeuropsychological testsSleep quality

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