Is sleep quality related to cognition in individuals with heart failure?

Heart Lung. 2015 May-Jun;44(3):212-8. doi: 10.1016/j.hrtlng.2015.02.005. Epub 2015 Mar 18.

Abstract

Objective: To examine how self-reported sleep quality and daytime symptoms are associated with selected domains of cognitive function among individuals with heart failure (HF).

Background: HF patients suffer from poor sleep quality and cognitive decline. The relationship between sleep and cognition has not been well documented among individuals with HF.

Methods: In this descriptive, cross-sectional study, 68 individuals with HF (male: 63%, mean age = 72 years, SD = 11) completed sleep questionnaires and a neuropsychological battery.

Results: Participant had mean Pittsburgh Sleep Quality Index score of 5.04 (SD = 2.8). Regression analyses demonstrated neither sleep quality or excessive daytime sleepiness (EDS) were related to cognitive function, but daytime dysfunction was related to lower letter fluency and attention index.

Conclusion: Contrary to some earlier reports, subjective sleep and EDS in this group of individuals was not associated with cognitive decline.

Keywords: Aged; Cognition; Heart failure; Neuropsychological tests; Sleep.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Attention
  • Cognition / physiology*
  • Cognition Disorders / epidemiology*
  • Cognition Disorders / etiology
  • Cross-Sectional Studies
  • Female
  • Heart Failure / complications*
  • Heart Failure / physiopathology
  • Humans
  • Male
  • Middle Aged
  • Regression Analysis
  • Self Report
  • Sleep / physiology
  • Sleep Wake Disorders / epidemiology*
  • Sleep Wake Disorders / etiology
  • Surveys and Questionnaires