This study used ambient heart rate monitoring among health care workers to determine whether a novel measure of heart rate variability (HRV), as well as sleep disturbances, fatigue, or cognitive performance differed among non-rotating night shift nurses relative to those working permanent day shifts. Continuous ambulatory HRV monitoring was performed among night nurses (n = 11), and a comparison group of permanent day nurses (n = 7), over a 36-h period coinciding with the last two 12-h shifts of each participant’s work week. Symptoms and psychomotor vigilance were assessed at the end of the ambient HRV monitoring period, and no differences between shifts were observed. Day nurses exhibited an increase in hourly mean HRV coherence ratios during their sleep period, suggesting a circadian pattern of cardiorespiratory phase coupling, whereas night nurses had no increase in HRV coherence ratios during their sleep period. The HRV coherence patterns were similar to high frequency HRV power among nurses on the same shift. To the authors knowledge, this study was the first to quantify patterns of the HRV coherence ratio among shiftworkers in a non-experimental (work/home) setting. The results suggest a pattern of autonomic dysregulation among night workers during their sleep period relative to those working day shifts. The HRV coherence ratio may serve as a novel indicator of HRV dysregulation among shift workers.

中文翻译：

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轮班工作和心率变异性一致性：护士试点研究。

这项研究使用了医护人员的环境心率监测来确定心率变异性 (HRV) 以及睡眠障碍、疲劳或认知表现的新测量方法，非轮值夜班护士相对于白天工作的护士是否存在差异转变。在夜班护士 (n = 11) 和长期日间护士 (n = 7) 的对照组中进行连续动态 HRV 监测，监测时间为 36 小时，与每个参与者工作周的最后两个 12 小时轮班相一致。在环境 HRV 监测期结束时评估症状和精神运动警惕性，未观察到轮班之间存在差异。日间护士在睡眠期间表现出每小时平均 HRV 一致性比增加，表明心肺相位耦合的昼夜节律模式，而夜班护士在睡眠期间 HRV 一致性比没有增加。HRV 一致性模式与同一班次护士的高频 HRV 功率相似。据作者所知，这项研究首次量化了非实验（工作/家庭）环境中轮班工人的 HRV 一致性比模式。结果表明，与白班工人相比，夜班工人在睡眠期间存在自主神经失调的模式。HRV 一致性比可以作为轮班工人 HRV 失调的新指标。