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Sleep quality disturbances and cognitive functioning in elderly patients with COPD.
Fiona A H M Cleutjens1, Claudio Pedone2, Daisy J A Janssen1
1Dept of Research and Education, CIRO Centre of Expertise for Chronic Organ Failure, Horn, The Netherlands.
ERJ Open Research
|December 14, 2016
Summary
Sleep disturbances in chronic obstructive pulmonary disease (COPD) patients show a weak link to cognitive function, particularly copying ability. These sleep issues do not appear to indicate disease severity in COPD.
Area of Science:
- Pulmonary Medicine
- Sleep Medicine
- Neuropsychology
Background:
- Chronic obstructive pulmonary disease (COPD) is associated with various comorbidities, including cognitive impairment.
- The relationship between sleep disturbances and cognitive function in COPD patients remains underexplored.
- Understanding this association is crucial for comprehensive patient management.
Purpose of the Study:
- To investigate the association between sleep disturbances and cognitive function, specifically copying ability, in elderly COPD patients.
- To examine if sleep disturbances correlate with COPD disease severity (GOLD grades).
- To compare cognitive performance in COPD patients with and without sleep disturbances.
Main Methods:
- Cross-sectional observational study of 562 ambulatory COPD patients.
- Cognitive function assessed using the Mini-Mental State Examination (MMSE).
- Sleep disturbances evaluated using the Established Populations for Epidemiologic Studies of the Elderly (EPESE) questionnaire.
- Patients stratified by Global Initiative for Chronic Obstructive Lung Disease (GOLD) grades.
Main Results:
- Overall sleep disturbances did not correlate significantly with cognitive functioning.
- A trend indicated worse design copying ability in patients experiencing sleep disturbances.
- GOLD I patients with insomnia or nocturnal awakenings exhibited poorer copying ability compared to those without.
- Copying ability worsened with increasing GOLD grade (GOLD III vs. GOLD I).
- Orientation and language functions were also impaired in GOLD II and III patients compared to GOLD I.
Conclusions:
- Sleep disturbances appear to be a weak correlate of cognitive functioning in COPD patients.
- Sleep disturbances are not a reliable marker for COPD disease severity.
- Further research may clarify the complex interplay between sleep, cognition, and COPD progression.
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