Proper lighting helps improve sleep in patients with Alzheimer's disease

According to Reuters the preliminary findings, according to a new study, sanatorium in targeted illumination intervention can have a positive effect on the sleep of Alzheimer's disease, mood and behavior.

Patients with Alzheimer's disease and related dementia may experience symptoms such as sleep problems, delirium and irritability during the day. The study tested whether customized daylighting interventions could improve sleep and behavior in Alzheimer's patients in long-term care facilities.

Illumination interventions significantly reduced sleep disorders, depression, and agitation compared to baseline and inactive lighting conditions. Although all symptoms improved, the improvement in sleep quality was most pronounced.

Dr. Mariana Figueiro, professor and lead researcher and lead author of the study at the Lighting Research Center (LRC) of the Troyesler Institute of Technology in New York, said: "We found that if the stimulus (light dose) is carefully transmitted and measured, it It has a strong impact on sleep, depression and agitation." "Depression is secondary, and the positive effects of light therapy on depression have surprised me."

The study involved 43 subjects diagnosed with Alzheimer's disease and associated dementia symptoms who were exposed to dynamic and non-dynamic custom lighting interventions for 4 weeks, with a “clearing period” of four weeks in between. Two weeks. From the time of waking up to 6 pm, the lighting intervention was carried out most of the time the patient was awake. In the last week, measurements of sleep disorders (Pittsburgh Sleep Quality Index), mood (Cornell Dementia Depression Scale), and agitation (Cohn-Mansfield Inciting Index) were collected.

The illumination is a dimmable, medium-duration rhythm stimulus that achieves dynamic color temperature, output, and distribution to achieve 0.3

The study was presented at the SLEEP2018 meeting in Baltimore on June 5th, the 32nd annual meeting of the Joint Sleep Association of the American Academy of Sleep Medicine and the Society for Sleep Research.

Editor: Yan Zhixiang

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