考虑脉冲波速度的时间变化对于准确的血压预测的重要性
Aditya Satishkumar Bantwal1, Amit Kumar Bhayadia1, Hui Meng2
1Department of Mechanical and Aerospace Engineering, University at Buffalo, Buffalo, NY, 14260, USA.
Annals of biomedical engineering
|February 6, 2025
概括
使用脉冲波速度 (PWV) 持续监测血压可能不准确. 考虑变化的PWV (t) 显著提高了准确性,将错误降低了高达96.8%.
科学领域:
- 生物医学工程 生物医学工程
- 心血管生理学心血管生理学
- 医疗器械技术 医疗器械技术
背景情况:
- 连续,无袖血压 (BP) 监测设备正在出现.
- 现有的设备经常使用脉冲波速度 (PWV) 或脉冲传输时间 (PTT),但存在很大的预测错误.
- 对血压的动脉反应是非线性的,PWV在心脏循环中显著变化 (PWV(t)).
研究的目的:
- 评估假设单个PWV值对BP预测准确性的影响.
- 为了比较使用单个PWV的BP预测模型与包含PWV的模型.
主要方法:
- 一个流体结构相互作用 (FSI) 试验床模拟了使用Holzapfel-Gasser-Ogden (HGO) 模型的辐射和常见动脉.
- 在脉动性血流下捕获了非线性动脉行为.
- 测试了两种BP预测模型:一种使用单个PWV,另一种使用两个PWV值 (腹缩和心缩) 来解释PWV (t).
主要成果:
- 单个PWV模型的预测误差为17.44 mmHg (辐射动脉) 和6.57 mmHg (动脉).
- 包含两个PWV值的模型将这些错误分别减少了90.6%和96.8%.
- 这凸显了PWV (t) 对BP预测准确性的重大影响.
结论:
- 在BP预测中依赖单一的PWV值会导致大量错误.
- 未来的连续BP监测设备应该结合PWV (t) 以提高准确性.
- 建议使用至少透缩和收缩PWV值来提高血压预测.
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