使用纵向血液动力学测量检查模型优化参数的时间变化
Nikolai L Bjørdalsbakke1, Jacob Sturdy2, Ulrik Wisløff3
1Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Richard Birkelandsvei 1A, Trondheim, 7491, Norway. nikolai.l.bjordalsbakke@ntnu.no.
Biomedical engineering online
|July 9, 2024
概括
这项研究使用数学模型来追踪运动导致的血压参数变化. 虽然模型与传统方法的相关性中等,但中风体积变化比最大有氧能力更有影响力.
科学领域:
- 心血管生理学心血管生理学
- 数学建模的数学建模
- 生物医学工程 生物医学工程
背景情况:
- 血液动力学数据可以通过可解释的参数来个性化数学循环模型.
- 调查这些参数是否跟踪身体活动对高血压的影响.
- 身体活动有益地影响血压和血管表型.
研究的目的:
- 确定解释估计心血管模型参数变化的模式.
- 评估参数是否跟踪运动对血压的影响.
- 探索基于物理的模型用于心血管疾病管理的使用.
主要方法:
- 优化闭环和开环心血管模型以试点研究数据 (12周的运动干预).
- 收集的血液动力学数据 (血压,血流) 和基本特征.
- 与传统估计相比,总周围阻力,全身动脉合规性和最大左心室弹性的计算变化.
主要成果:
- 基于心血管模型的参数变化与传统估计相对应.
- 冠状动脉压力波形产生了比手指动脉压力更高的相关性.
- 12周的参数变化与运动后的短期变化相当.
结论:
- 最大有氧能力的变化并不能显著解释关键参数的变化.
- 冲击体积变化解释了比最大有氧能力更多的变化.
- 需要进一步的研究来准确地跟踪运动诱导的血管变化在高血压前/高血压使用块参数模型.
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