设计和验证可用于无袖血压估计的可穿戴双点时间差异化的光电血压图 (2PPG)
Kei Fong Mark Wong1, Weiting Huang2, Dinaa Ying Hui Ee3
1School of Mechanical and Aerospace Engineering, Nanyang Technological University (NTU), Singapore.
Computer methods and programs in biomedicine
|June 2, 2024
概括
一个新的可穿戴设备使用无心电图的光电图 (PPG) 连续准确估计血压 (BP). 这种非侵入性技术为心血管护理中的长期门诊血压监测提供了一个便携式解决方案.
科学领域:
- 生物医学工程 生物医学工程
- 心血管技术的心血管技术
- 可穿戴的健康设备
背景情况:
- 持续监测血压对于高危心血管患者至关重要.
- 目前的方法可能是侵入性的,限制了长期的门诊评估.
- 需要一种无遮,无袖的可穿戴设备来持续测量血压.
研究的目的:
- 为了验证metasense 2PPG无袖可穿戴设计的有效性.
- 评估它在没有心电图 (ECG) 的情况下持续估计血压的能力.
- 为了使长期的门诊血压评估.
主要方法:
- 一个定制的高速光学传感器 (2PPG) 集成到一个低功耗的可穿戴手表中.
- 从78名志愿者 (21-64岁) 获取心电图和2PPG信号.
- 机器学习 (ML) 使用9-1K倍交叉验证从2PPG信托特征估计BP.
主要成果:
- 脉冲过渡时间 (PTT) 与静脉血压 (SBP) (0.971) 和静脉血压 (DBP) (0.954) 的高相关性.
- 低平均绝对误差:SBP的3.167±1.636毫米,DBP的6.4±3.9毫米.
- 门诊估计的高准确性 (例如,98%的SBP在15mmHg以内,91%的DBP在10mmHg以内).
结论:
- 超感应装置提供连续的,非侵入性的血压估计,与传统的门诊血压监测器相美.
- 它的便携性和不引人注目的设计有助于长期的门诊血压测量.
- 这项技术有可能用于精确的心血管治疗方案.
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