LIGHTING SOLUTIONS
balance between sleeping and waking. It also includes situation specific light settings for various activities and needs. A nightlight that is free from blue light means that everyone can move around safely and carry out various tasks without their circadian rhythm being affected. The automatically controlled light changes during night and day, just like the natural light outside. It increases slowly in the morning like the sun, is strongest in the middle of the day, and at night, a warm night light without the blue colour starts up and runs throughout the night in hallways and offices, while it is dark in the bedrooms.
The results The effect of a circadian lighting system has been studied in relation to a number of parameters, including sleep, circadian rhythm markers, cognitive abilities, anxiety and depression. The first results have recently been published at the International Stroke Conference in Houston, Texas. They showed that patients on the ward with circadian lighting had significantly fewer symptoms of depression when they were discharged compared to the patients from the control group. The degree of depression in the patients was measured when they were admitted as well as when they were
Automatically controlled light changes during night and day, like the natural light.
discharged after at least two weeks of hospitalisation. The Hamilton Rating Scale for Depression (HRSD) and the Major Depression Inventory (MDI) scale were used. The effect of circadian lighting on patients’ sleep and fatigue levels as well as the circadian rhythm dependent transmitter substances will be published at the European Stroke Organisation
Conference in May next year. “The study shows that circadian lighting counteracts or effectively treats depression that has occurred in connection with a blood clot or brain haemorrhage. In the future, circadian lighting should be considered as part of the treatment environment in connection with courses of rehabilitation lasting more than two weeks,” concludes Anders West.
IFHE
IFHEDigest Providing insights into the vast field of healthcare engineering and facility management IFHE DIGEST 2018 61
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