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. 2019 Apr 18:15:1009-1014.
doi: 10.2147/NDT.S193869. eCollection 2019.

The influence of non-breathing-related sleep fragmentation on cognitive function in patients with cerebral small vessel disease

Jihui Wang  1 , Xiaodong Chen  2 , Jinchi Liao  2 , Li Zhou  3 , Siyuan Liao  2 , Yilong Shan  2 , Zhengqi Lu  2 , Jiong Tao  1
Affiliations

The influence of non-breathing-related sleep fragmentation on cognitive function in patients with cerebral small vessel disease

Jihui Wang et al. Neuropsychiatr Dis Treat. .

Abstract

Background: Cognitive impairment in patients with cerebral small vessel disease (CSVD) is common, but the pathogenic mechanism is not well understood. The situation of non-breathing-related sleep fragmentation in CSVD patients and its influence on cognitive impairment is not clear. The aim of this study was to investigate the influence of non-breathing-related sleep fragmentation on cognitive function in patients with CSVD.

Methods: A group of 89 CSVD patients without breathing-related sleep disorders in the Department of Neurology, Third Affiliated Hospital of Sun Yat-sen University was enrolled. The patients underwent magnetic resonance scan, polysomnography, cognitive function evaluation using Montreal Cognitive Assessment scale (MoCA), and Mini-Mental State Examination. The patients were assigned to study group (arousal index [ArI] ≥26.8/hour) or control group (ArI <26.8/hour) based on the average level of ArI (mean =26.8, SD =7.5) at night, and the cognitive function of the patients in the two groups was analyzed.

Results: The total MoCA score, the subscale scores of visuospatial ability and delayed recall in the study group were significantly lower than that in the control group (P<0.05). The cognitive impairment measured by MoCA was positively related to ArI level and %N-3 sleep according to the results of logistic regression (P<0.05).

Conclusion: Non-breathing-related sleep fragmentation is associated with cognitive impairment in CSVD patients, especially executive function and delayed recall ability.

Keywords: cerebrovascular disorders; cognition; fragmentation; polysomnography; sleep.

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Conflict of interest statement

Disclosure The authors report no conflicts of interest in this work.

Figures

Figure 1
Figure 1
Flow diagram of the study. Abbreviation: CSVD, cerebral small vessel disease.
See this image and copyright information in PMC

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