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Updated: Apr 26, 2026

Drug-Induced Sleep Endoscopy DISE with Target Controlled Infusion TCI and Bispectral Analysis in Obstructive Sleep Apnea
Published on: December 6, 2016
Cognitive impairment in obstructive sleep apnea
K Gagnon1, A-A Baril2, J-F Gagnon1
1Center for Advanced Research in Sleep Medicine, Hôpital du Sacré-Cœur de Montréal, 5400, Boulevard Gouin Ouest, Montréal, QC, H4J 1C5 Canada; Department of Psychology, Université du Québec à Montréal, 2101, Jeanne-Mance, Montréal, QC, H2X 2J6 Canada.
Abstract:
Obstructive sleep apnea (OSA) is characterised by repetitive cessation or reduction of airflow due to upper airway obstructions. These respiratory events lead to chronic sleep fragmentation and intermittent hypoxemia. Several studies have shown that OSA is associated with daytime sleepiness and cognitive dysfunctions, characterized by impairments of attention, episodic memory, working memory, and executive functions. This paper reviews the cognitive profile of adults with OSA and discusses the relative role of altered sleep and hypoxemia in the aetiology of these cognitive deficits. Markers of cognitive dysfunctions such as those measured with waking electroencephalography and neuroimaging are also presented. The effects of continuous positive airway pressure (CPAP) on cognitive functioning and the possibility of permanent brain damage associated with OSA are also discussed. Finally, this paper reviews the evidence suggesting that OSA is a risk factor for developing mild cognitive impairment and dementia in the aging population and stresses the importance of its early diagnosis and treatment.
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