SHM Converge Scientific Abstract ePoster Gallery-Impact of Dynamic Lighting on Hospitalized Patients

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This study examined whether a programmable dynamic lighting system could improve sleep in hospitalized patients compared with standard hospital lighting. Poor sleep is common in hospitals, and prior research suggests that natural light may improve outcomes, but few studies have tested artificial lighting designed to support circadian rhythms.<br /><br />In this trial, 87 patients consented from 110 approached: 42 were assigned to the intervention room and 45 to the control room on a cardiology unit. The intervention room used a lighting program that delivered blue-enriched light during the day, a melanotic stimulus twice daily, and blue-depleted light in the evening. Sleep and wake patterns were measured with mattress sensors, and patient-reported sleepiness and alertness were assessed with sleep diaries and the Karolinska Sleepiness Scale.<br /><br />Results showed that the intervention shifted the timing of sleep earlier in the night and increased sleep duration. Overnight sleep was 69 minutes longer in the dynamic lighting group than in the control group (270 vs 201 minutes). Patients in the intervention group also reported feeling more alert during the daytime and evening.<br /><br />The authors concluded that dynamic lighting can improve sleep timing and duration for hospitalized patients and may be a useful part of hospital environmental design. However, because the study involved only one intervention room and one control room, it could not determine whether improved sleep led to better clinical outcomes such as reduced delirium or shorter length of stay. Further research is needed to see whether these sleep benefits translate into broader patient outcomes.

Asset Subtitle

Geetanjali Rajda

Meta Tag

Author List Andrew Dunn, Andrew Varga, Geetanjali Rajda, Richard L. Vincent

Category Research

Concept Circadian Rhythm

Concept Sleep

Concept Hospital Lighting

Concept Dynamic Lighting

Concept Programmable Lighting

Distinguished Non-Finalist

Presenter Organization Mount Sinai Hospital

Presenting Author Geetanjali Rajda

Track Technology in Hospital Medicine

Keywords

dynamic lighting

hospital sleep

circadian rhythm

blue-enriched light

blue-depleted light

melanopic stimulus

sleep duration

patient alertness

cardiology unit

sleep quality

Circadian Rhythm

Sleep

Hospital Lighting

Dynamic Lighting

Programmable Lighting