Lighting, sleep and circadian rhythm: An intervention study in the intensive care unit

• Patients in an intensive care unit (ICU) may risk disruption of their circadian rhythm. In an intervention research project a cycled lighting system was set up in an ICU room to support patients' circadian rhythm. Part I aimed to compare experiences of the lighting environment in two rooms with different lighting environments by lighting experiences questionnaire. The results indicated differences in advantage for the patients in the intervention room (n=48), in perception of daytime brightness (p =0.004). In nighttime, greater lighting variation (p =0.005) was found in the ordinary room (n = 52). Part II aimed to describe experiences of lighting in the room equipped with the cycled lighting environment. Patients (n=19) were interviewed and the results were presented in categories: "A dynamic lighting environment", "Impact of lighting on patients' steep", The impact of lighting/lights on circadian rhythm" and The Lighting calms". Most had experiences from sleep disorders and half had nightmares/sights and circadian rhythm disruption. Nearly all were pleased with the cycled lighting environment, which together with daylight supported their circadian rhythm. In night's actual lighting levels helped patients and staff to connect which engendered feelings of calm. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Subject headings

MEDICIN OCH HÄLSOVETENSKAP  -- Hälsovetenskap -- Omvårdnad (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Health Sciences -- Nursing (hsv//eng)

Keyword

Circadian rhythm

Critical care

Content analysis Cycled light

Intensive care unit interview

Mann

qualitative content-analysis

melatonin

entrainment

depression

sedation

delirium

humans

Nursing

Circadian rhythm

Människan i vården

Publication and Content Type

ref (subject category)

art (subject category)