title: Is sleep quality related to cognition in individuals with heart failure?
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.
  
  
  CONCLUSIONS
  Contrary to some earlier reports, subjective sleep and EDS in this group of individuals was not associated with cognitive decline.
authors: University of Wisconsin-Madison, School of Nursing, 701 Highland Avenue, Madison, WI 53705, USA. Electronic address: cmoon4@wisc.edu.
authors: Chooza
authors: C
authors: Moon
authors: University of Wisconsin-Madison, School of Nursing, 701 Highland Avenue, Madison, WI 53705, USA; William S. Middleton Memorial Veterans Hospital Geriatrics Research, Education and Clinical Center (GRECC), 2500 Overlook Terrace, Madison, WI 53705, USA.
authors: Cynthia H
authors: CH
authors: Phelan
authors: University of Wisconsin-Madison, School of Nursing, 701 Highland Avenue, Madison, WI 53705, USA.
authors: Diane R
authors: DR
authors: Lauver
authors: University of Wisconsin-Madison, School of Nursing, 701 Highland Avenue, Madison, WI 53705, USA.
authors: Lisa C
authors: LC
authors: Bratzke
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001288:Attention; D003071:Cognition / Q000502:physiology*; D003072:Cognition Disorders / Q000453:epidemiology* / Q000209:etiology; D003430:Cross-Sectional Studies; D005260:Female; D006333:Heart Failure / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D057566:Self Report; D012890:Sleep / Q000502:physiology; D012893:Sleep Wake Disorders / Q000453:epidemiology* / Q000209:etiology; D011795:Surveys and Questionnaires
keywords: Aged; Cognition; Heart failure; Neuropsychological tests; Sleep