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[Obstructive sleep apnea and cognitive impairment in the elderly]
1Service de gériatrie, Hôpital Bichat-Claude Bernard, APHP, Paris.
Psychologie & Neuropsychiatrie Du Vieillissement
|August 27, 2010
Summary
Obstructive Sleep Apnea Syndrome (OSAS) affects older adults and Alzheimer's patients, causing cognitive decline. Continuous positive airway pressure (CPAP) therapy may improve cognitive function in these individuals.
Area of Science:
- Neurology
- Sleep Medicine
- Geriatrics
Context:
- Obstructive Sleep Apnea Syndrome (OSAS) prevalence increases with age, affecting up to 25% of older adults.
- OSAS impacts up to 48% of Alzheimer's disease patients, exacerbating cognitive decline.
- OSAS is linked to hypoxia, fragmented sleep, cognitive dysfunction, and brain damage.
Purpose:
- To review the impact of OSAS on cognitive function, particularly in aging and Alzheimer's disease.
- To explore the mechanisms underlying OSAS-related cognitive disturbances.
- To assess the potential benefits of CPAP therapy for cognitive deficits in OSAS patients.
Summary:
- OSAS causes intermittent hypoxemia and sleep fragmentation, leading to impairments in attention, executive function, memory, and motor efficiency.
- Mechanisms include hypoxemia, sleep fragmentation, inflammation, and reduced cerebral blood flow, impacting white and grey matter.
- CPAP therapy is the primary treatment for OSAS and shows promise in improving cognitive function in affected individuals, including those with dementia.
Impact:
- OSAS is an independent risk factor for hypertension, stroke, and mortality.
- Understanding OSAS-cognition links can inform early diagnosis and intervention strategies.
- CPAP therapy offers a potential therapeutic avenue to mitigate cognitive decline associated with OSAS and dementia.
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