ArticleEnvironmental and occupational health practice2026
Development of easy-to-notice nurse call with low stress: a pilot study using heart rate variability.
Article in Environmental and occupational health practice, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objectives: This study evaluated sounds used in nurse call (NC) systems to reduce stress in the nursing work environment by developing low-stress NCs. Methods: Participants' noticeability and stress were evaluated based on their heart rate variability while listening to nine types of test sounds, including two existing NCs. Next, a new NC was extracted from the test sounds and was verified in the field as a replacement for the tremolo sound (tremolo), which has a negative impression. Results: Tremolo was the most noticeable. However, this sound generates the highest cardiac sympathetic index (CSI), which is an index of stress-related sympathetic nerve activity. Therefore, we extracted a C sound (C6 + G#6), which is the second most noticeable sound after tremolo. The new sound was introduced into a NC system, and the CSI of nurses on duty was analyzed. We noticed that the C sound was less stressful than tremolo. Conclusions: The findings suggest that an improvement in the NC sound quality may lead to reduced stress among nurses in the work field.
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