通过多通道地震心脏学信号监测呼吸和心脏呼吸相互作用
Jessica Centracchio1, Salvatore Parlato1, Samuel E Schmidt2
1Department of Electrical Engineering and Information Technologies, University of Naples Federico II, Via Claudio, 21, 80125, Naples, Italy.
Physical and engineering sciences in medicine
|October 6, 2025
概括
地震心脏图 (SCG) 使用胸部加速度计准确监测呼吸和心脏呼吸相互作用. 最佳的传感器放置确保了可靠的数据,用于呼吸和心肺相互作用分析.
科学领域:
- 生物医学工程 生物医学工程
- 心血管呼吸系统生理学
- 信号处理 信号处理
背景情况:
- 地震心脏图 (SCG) 记录了由心脏活动引起的胸壁加速.
- 心肺呼吸系统相互作用改变SCG信号的幅度和形态.
- 加速度计还可以通过胸部倾斜来监测呼吸.
研究的目的:
- 研究加速度计放置对基于SCG的呼吸和心肺呼吸相互作用监测的影响.
- 评估SCG衍生的呼吸信号 (胸部倾斜,幅度调制,形态变化) 与呼吸带相比.
- 引入和验证用于SCG分析的新型形态相似性指数 (MSi).
主要方法:
- 从16个加速度计和9个受试者的呼吸带同时进行SCG记录.
- 从SCG数据中使用胸部倾斜,振幅调制 (AM) 和MSi估计呼吸信号.
- 与参考数据相比,呼吸行为检测和呼吸间隔 (IBI) 估计的性能评估.
主要成果:
- 使用胸部倾斜度 (95.8%的灵敏度,95.5%的PPV) 和MSi (94.3%的灵敏度,95.7%的PPV) 进行呼吸道检测和IBI估计的高精度.
- 虽然AM的性能略低 (85.9%的灵敏度,84.4%的PPV),但仍然提供了有价值的数据.
- IBI测量显示出最小的偏差,倾斜/MSi约为±0.8s,AM约为±1s.
- 胸部倾斜和MSI显示在传感器位置的性能变化很小,与AM不同.
结论:
- SCG,特别是使用胸部倾斜和MSI,提供了呼吸和心肺呼吸相互作用的准确和可靠的监测.
- 加速度计的位置具有可变的影响,倾斜度和MSi对位置的敏感性低于AM.
- SCG提供了一种有希望的,非侵入性的方法,可以从多个胸部位置获取心肺呼吸系统信息.
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