P1‐136: Sleep disorders prevalence among patients with mild cognitive impairment and dementia subtypes
Year: 2015
Type: article
Study design: Observational Study
Abstract: Sleep disorders are frequent in patients with cognitive impairment and it has been reported a prevalence of 25% to 80% depending on the specific diagnosis. There are only two studies published regarding sleep disorders, care burden, and cognitive impairment / dementia in Mexican patients. We included 178 patients from the dementia clinic at the National Institute of Neurology and Neurosurgery in Mexico, between May and October 2014. There were included patients with Mild Cognitive Impairment (MCI), Alzheimer's Disease (AD), Mixed Dementia (MD), Vascular Dementia (VD) and fronto lobar degeneration (FLD). Several clinimetric evaliations were conducted for this study we used the Minimental State Examination (MMSE) and Sleep Disorders Inventory (SDI) results, three items were added in order to better identify apnea symptoms (snoring, apnea and / or unrefreshing sleep). From our 178 patients sample; 128 were women, MCI and MD were the most frequent diagnosis with a prevalence of 29.8% and 28.1% respectively. The mean age was 71.4 (SD 10). The statistical analysis showed that the subjects who reported less sleep disorders also were the ones who scored lower in the cognitive tests. It was also found that the subjects who had a better cognitive performance were also reported higher prevalence of apnea symptoms (p=0.074 and p= 0.001 respectively). The global prevalence reported for any sleep disorder was 82%, for insomnia 37.1%, for hypersomnia 47.8%, for parasomnia 21.4% and apnea 54.5% (fig 2). Only MCI was correlated with a lower hypersomnia prevalence (30.2%, p=0.022). Our results are similar to those in the international literature regarding to cognitive impairment / dementia and any association with sleep disorders. Moreover, sleep disorders not only may be associated to cognitive decline severity but to the care burden, which frequently leads to patient's institutionalization. Our results point out towards the need to develop a new research line related to sleep disorders in patients with different cognitive disorders. Diagnosis distribution among the sample n=178. Prevalence of sleep disorders by diagnosis.
Source: Alzheimer s & Dementia
Institution: Instituto Nacional de Neurología y Neurocirugía
Language: English
Topic: Sleep and related disorders
Subfield: Experimental and Cognitive Psychology
Field: Psychology
Domain: Social Sciences
Open Access status: bronze
OpenAlex ID: W2339724955