Association Between Insomnia and Cognitive Frailty Among Older Patients With Chronic Heart Failure: Multiple Mediating Effects of Depressive Symptoms and Social Support.
Simeng Zhang, Jian Liu, Wenran Qu and 7 others
PMID 39010267WHAT IT FOUND
In older patients with chronic heart failure, insomnia was associated with cognitive frailty, and depressive symptoms were part of that link.
Ask about sleep and mood, but do not assume treating them prevents frailty.
Key findings
01Cognitive frailty was present in 154 (51.33%) of 300 older patients with chronic heart failure.
02Insomnia was positively associated with cognitive frailty, and the association remained after controlling for age, marital status, education, pain, exercise, NYHA class, and LVEF.
03Depressive symptoms were part of the link between insomnia and cognitive frailty; social support alone was not.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The study was cross-sectional, so it cannot show that insomnia caused cognitive frailty or that treating insomnia would reduce it. Participants were recruited by convenience sampling from one hospital in China, so results may not apply to other settings. Cognitive frailty was defined by combining the FRAIL scale and Montreal Cognitive Assessment cutoffs, not by a single direct diagnostic instrument. Measures were self-report, so recall bias may affect the results. People with dementia, visual or auditory impairment, or speech communication difficulties were excluded, so findings may not apply to them.
The easy way to misread this
Do not conclude that insomnia causes cognitive frailty or that treating insomnia will prevent it. The study measured these factors at one time point and could not determine causal relationships.