Effect of Dynamic Light Application on Cognitive Performance and Well-being of Intensive Care Nurses

Simons, Koen S.; Boeijen, Enzio R. K.; Mertens, Marlies C.; Rood, Paul; Jager, Cornelis P.C. de; Boogaard, Mark van den

doi:10.4037/ajcc2018908

Cited by 8 publications

(9 citation statements)

References 13 publications

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“…In a more “real world” assessment of the ramifications of altering light within a hospital setting, a 10-min exposure to bright (5000 lx at 40 cm) light prior to the day shift (0800–1700 h) reduced sleepiness and reduced mean response time on the PVT at 1000 h, though no significant difference was observed in any parameter later in the day [ 32 ]. A more recent study of ICU nurses reported that cognitive performance, self-reported depressive signs and symptoms, and fatigue did not differ significantly between exposure to 1700 lx during the day time versus 300 lx in control settings [ 19 ]. These data suggest that a higher illuminance environment may prove beneficial to both the day and night shift worker, but that there is likely a lower threshold of light illuminance and of exposure duration.…”

Section: Discussionmentioning

confidence: 99%

“…Bright light even of short duration has been shown to impart acute positive effects in night shift working nurses, including heightened subjective alertness and reduced insomnia, anxiety, and depression [ 18 ]. However, the ramifications of light therapy on nursing performance remain to be completely defined [ 19 ]. Herein we conducted a randomized crossover clinical trial to address the hypothesis that exposure to bright light reduces post-shift sleepiness and enhances vigilance and psychomotor performance among ICU nurses working a night shift.…”

Section: Introductionmentioning

confidence: 99%

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Bright environmental light improves the sleepiness of nightshift ICU nurses

et al. 2018

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BackgroundShift work can disturb circadian homeostasis and result in fatigue, excessive sleepiness, and reduced quality of life. Light therapy has been shown to impart positive effects in night shift workers. We sought to determine whether or not prolonged exposure to bright light during a night shift reduces sleepiness and enhances psychomotor performance among ICU nurses.MethodsThis is a single-center randomized, crossover clinical trial at a surgical trauma ICU. ICU nurses working a night shift were exposed to a 10-h period of high illuminance (1500–2000 lx) white light compared to standard ambient fluorescent lighting of the hospital. They then completed the Stanford Sleepiness Scale and the Psychomotor Vigilance Test. The primary and secondary endpoints were analyzed using the paired t test. A p value <0.05 was considered significant.ResultsA total of 43 matched pairs completed both lighting exposures and were analyzed. When exposed to high illuminance lighting subjects experienced reduced sleepiness scores on the Stanford Sleepiness Scale than when exposed to standard hospital lighting: mean (sem) 2.6 (0.2) vs. 3.0 (0.2), p = 0.03. However, they committed more psychomotor errors: 2.3 (0.2) vs. 1.7 (0.2), p = 0.03.ConclusionsA bright lighting environment for ICU nurses working the night shift reduces sleepiness but increases the number of psychomotor errors.Trial registrationClinicalTrials.gov, NCT03331822. Retrospectively registered on 6 November 2017.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bright environmental light improves the sleepiness of nightshift ICU nurses

et al. 2018

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“…Two studies investigated the effect of dynamic lighting in the workplace, both involving nursing populations working within hospitals. Dynamic lighting resulted in no change in sleep parameters [122,127]. However, dynamic lighting was associated with a decrease in perceived health status [127].…”

Section: Controlled Light Exposurementioning

confidence: 97%

“…Dynamic lighting resulted in no change in sleep parameters [122,127]. However, dynamic lighting was associated with a decrease in perceived health status [127]. Lastly, one study evaluated the effect of light-blocking glasses which resulted in increased objective sleep duration and efficiency [125].…”

Section: Controlled Light Exposurementioning

confidence: 99%

“…Lastly, one study evaluated the effect of light-blocking glasses which resulted in increased objective sleep duration and efficiency [125]. In terms of side effects, participants reported difficultly falling asleep on days off when in the treatment condition [120] and headaches [118,124,127] and eye strain [124]. However, all of these studies report a minority of participants experienced these side effects.…”

Section: Controlled Light Exposurementioning

confidence: 99%

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Non-Pharmacological Interventions to Improve Chronic Disease Risk Factors and Sleep in Shift Workers: A Systematic Review and Meta-Analysis

et al. 2021

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Shift work is associated with adverse chronic health outcomes. Addressing chronic disease risk factors including biomedical risk factors, behavioural risk factors, as well as sleep and perceived health status, affords an opportunity to improve health outcomes in shift workers. The present study aimed to conduct a systematic review, qualitative synthesis, and meta-analysis of non-pharmacological interventions targeting chronic disease risk factors, including sleep, in shift workers. A total of 8465 records were retrieved; 65 publications were eligible for inclusion in qualitative analysis. Random-effects meta-analysis were conducted for eight eligible health outcomes, including a total of thirty-nine studies. Interventions resulted in increased objective sleep duration (Hedges’ g = 0.73; CI: 0.36, 1.10, k = 16), improved objective sleep efficiency (Hedges’ g = 0.48; CI: 0.20, 0.76, k = 10) and a small increase in both subjective sleep duration (Hedges’ g = 0.11; CI: −0.04, 0.27, k = 19) and sleep quality (Hedges’ g = 0.11; CI: −0.11, 0.33, k = 21). Interventions also improved perceived health status (Hedges’ g = 0.20; CI: −0.05, 0.46, k = 8), decreased systolic (Hedges’ g = 0.26; CI: −0.54, 0.02, k = 7) and diastolic (Hedges’ g = 0.06; CI: −0.23, 0.36, k = 7) blood pressure, and reduced body mass index (Hedges’ g = −0.04; CI: −0.37, 0.29, k = 9). The current study suggests interventions may improve chronic disease risk factors and sleep in shift workers; however, this could only be objectively assessed for a limited number of risk factor endpoints. Future interventions could explore the impact of non-pharmacological interventions on a broader range of chronic disease risk factors to better characterise targets for improved health outcomes in shift workers.

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A systematic literature review on the rationale for and effects of dynamic light scenarios

Kompier

Smolders

Kort³

2020

Building and Environment

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Effect of Dynamic Light Application on Cognitive Performance and Well-being of Intensive Care Nurses

Abstract: Daytime lighting conditions did not affect intensive care unit nurses' cognitive performance, perceived depressive signs and symptoms, or fatigue. Perceived quality of life, predominantly in the psychological and environmental domains, was lower for nurses working in dynamic light.

Cited by 8 publications

References 13 publications

Bright environmental light improves the sleepiness of nightshift ICU nurses

Bright environmental light improves the sleepiness of nightshift ICU nurses

Non-Pharmacological Interventions to Improve Chronic Disease Risk Factors and Sleep in Shift Workers: A Systematic Review and Meta-Analysis

A systematic literature review on the rationale for and effects of dynamic light scenarios

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