Associations of Subjective Sleep Quality and Daytime Sleepiness With Cognitive Impairment in Adults and Elders With Heart Failure

Abstract

This study examined the association of subjective nighttime sleep quality and daytime sleepiness with cognitive impairment in 105 adults (< 60 years old) and 167 elders (≥ 60 years old) with heart failure. Nighttime sleep quality and daytime sleepiness were measured by the Pittsburgh Sleep Quality Index and the Epworth Sleepiness Scale. Cognitive impairment was assessed using a neuropsychological battery measuring attention, memory, and processing speed. Multivariate logistic regression was used. In adults, daytime sleepiness was associated with cognitive impairment, whereas poor nighttime sleep quality was associated with cognitive impairment in elders. Age may play an important role in how sleep impacts cognition in persons with heart failure. Improving nighttime sleep quality and daytime sleepiness in this population may improve cognition.

FUNDING

The parent study for this work was funded by a grant from the National Institutes of Health/National Heart, Lung & Blood Institute (R01 HL084394-01A1) and by the Philadelphia Veterans Affairs Medical Center, VISN 4 Mental Illness Research, Education, and Clinical Center. The authors gratefully acknowledge the predoctoral funding for Eeeseung Byun provided by the National Institutes of Health/National Institute of Nursing Research (T32 NR009356) and the National Hartford Centers of Geriatric Nursing Excellence Patricia G. Archbold Scholarship program from 2010 to 2012. We also acknowledge the postdoctoral funding for Eeeseung Byun by the National Institutes of Health, National Institute of Nursing Research (T32 NR007088). The authors also gratefully acknowledge funding for Jinyoung Kim by the National Institutes of Health, National Institute of Nursing Research (R00 NR013177).

Additional information

Funding

The parent study for this work was funded by a grant from the National Institutes of Health/National Heart, Lung & Blood Institute (R01 HL084394-01A1) and by the Philadelphia Veterans Affairs Medical Center, VISN 4 Mental Illness Research, Education, and Clinical Center. The authors gratefully acknowledge the predoctoral funding for Eeeseung Byun provided by the National Institutes of Health/National Institute of Nursing Research (T32 NR009356) and the National Hartford Centers of Geriatric Nursing Excellence Patricia G. Archbold Scholarship program from 2010 to 2012. We also acknowledge the postdoctoral funding for Eeeseung Byun by the National Institutes of Health, National Institute of Nursing Research (T32 NR007088). The authors also gratefully acknowledge funding for Jinyoung Kim by the National Institutes of Health, National Institute of Nursing Research (R00 NR013177).