信号长度和窗口大小对心率变化和脉率变化指标的影响
Agnieszka Uryga1, Bartosz Olszewski1, Damian Pietroń1
1Department of Biomedical Engineering, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland.
Physiological measurement
|July 7, 2025
概括
来自非侵入性动脉血压 (nABP) 和心电图 (ECG) 的时间域自主神经系统 (ANS) 度量可通过更短的记录重现. 然而,nABP和ECG之间的一致性是温和的,特别是在测量方面.
科学领域:
- 生理监测是指对身体进行生理监测.
- 自主神经系统 (ANS) 研究研究
- 可穿戴技术是可穿戴的技术.
背景情况:
- 越来越多的人对使用非心电图信号感兴趣,例如基于光电脉冲图的非侵入性动脉血压 (nABP) 进行ANS评估.
- 需要用最短的记录时间来评估ANS活动.
- 来自心电图的心率变化 (HRV) 和来自nABP的脉率变化 (PRV) 的比较.
研究的目的:
- 通过ECG和nABP得出的HRV和PRV进行比较.
- 调查信号缩短和计算窗口大小对时间域,频域和非线性ANS指标的影响.
- 在不同的记录条件下评估HRV和PRV之间的可复制性和一致性.
主要方法:
- 在健康个体 (18-31岁) 中记录了心电图和nABP.
- 使用时间域,频域和非线性指标分析HRV和PRV.
- 使用ICC和Bland-Altman分析评估信号长度 (3分钟对5分钟) 和窗口大小 (3分钟,5分钟,15分钟) 对ANS指标的影响.
主要成果:
- 时间域指标显示出优异的可重现性,信号长度和窗口大小缩短 (ICCs 0.96).
- 在HRV和PRV之间观察到温和的协议.
- 度指标对信号缩短最敏感,其ICC较低.
- 较短的窗口大小影响了特定的ANS指标,如SD2和频域值.
结论:
- 时间域度量是强大的减少信号长度和窗口大小的ANS评估.
- HRV和PRV之间的可互换性是适度的,并受到所选择的指标的影响.
- 信号长度和窗口大小极大地影响ANS指标,特别是基于的指数,在短期监测中需要仔细考虑.
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