• Heather C Riemer, Joanna Mates, Linda Ryan, and Bonnie J Schleder.
• Heather C. Riemer is a critical care nurse, UW Medicine Valley Medical Center, Renton, Washington. Joanna Mates is a critical care nurse and Bonnie J. Schleder is a critical care clinical nurse specialist, Advocate Good Shepherd Hospital, Barrington, Illinois. Linda Ryan is an assistant professor, College of Nursing and Health Professions, Lewis University, Romeoville, Illinois.
• Am. J. Crit. Care. 2015 Sep 1; 24 (5): 396-402.

BackgroundThe benefits of quiet time, a therapeutic method of improving the health care environment, have been evaluated in patients, but only a few studies have examined the effects of quiet time on intensive care nurses.ObjectiveTo evaluate the effects of implementing quiet time in a medical-surgical intensive care unit on levels of light, noise, and nurses' stress.MethodsQuiet time consisted of turning down the unit lights for a designated time. Levels of light, noise, and nurses' stress were measured. Nurses' stress levels were measured by using a 100-point visual analog scale; unit noise, by using a digital sound level meter (model 407736, Extech Instruments); and unit light, by using an illumination light meter (model 615, Huygen Corporation). Measurements were obtained 30 minutes before and 30 minutes, 1 hour, and 2 hours after implementation of quiet time.ResultsAnalysis of variance and comparisons of means indicated that both light levels and nurses' stress levels were significantly decreased after quiet time (both P < .001). Noise levels were also decreased after quiet time, but the decrease was not significant (P = .08).ConclusionsUse of quiet time resulted in decreased light levels and decreased stress levels among nurses. Quiet time is an easily performed energy-saving intervention to promote a healthy work environment.©2015 American Association of Critical-Care Nurses.

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