Albala, L., Bober, T., Hale, G., Warfield, B., Collins, M. L., Merritt, Z., Steimetz, E., Nadler, S., Lev, Y., & Hanifin, J. (2019). Effect on nurse and patient experience: Overnight use of blue-depleted illumination. BMJ Open Quality, 8(3), e000692.
Nighttime caregiving requires light, and care providers often have no choice but to use blue-spectrum lighting that is disruptive to patient sleep. Researchers worked with a lighting expert to develop a blue-depleted light pod and compared outcomes between two nights with traditional lighting options and two nights with the light pods. Nurses were generally satisfied with the pods, and there was a statistically significant improvement in how patients rated their anxiety and depression. One of the most surprising findings from this study highlights the problem of nurses working in almost complete darkness in patient rooms to avoid disturbing patient sleep. And while blue-wavelength light is bad for patient sleep, no light is bad for everyone.