开发基于PPG的硬件和软件系统,可在肘部和指部署,以实时估计脉冲传输时间
概括
这项研究引入了一种新型的光聚聚聚光学 (PPG) 系统,用于估计脉冲过渡时间 (PTT),以监测血压 (BP). 该设备对长期心血管健康评估具有前景.
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 医疗器械 医疗器械
背景情况:
- 血压 (BP) 监测对心血管健康至关重要,但目前的袖口式设备在长期使用时不舒服.
- 脉冲过渡时间 (PTT) 与血压相关,但准确性受到各种因素的影响.
- 需要使用非侵入性,持续的血压监测方法来改善患者护理.
研究的目的:
- 开发和验证一种新的硬件系统,采用定制的光电缩学 (PPG) 传感器进行准确的PTT估计.
- 实现实时PTT评估和特征提取的软件算法.
- 调查研究BP-PTT关系的开发系统的可行性.
主要方法:
- 设计并实施了一种新的硬件系统,配有两个定制的PPG传感器.
- 开发了用于实时PTT计算的软件界面和算法.
- 对五名健康志愿者进行了临床前研究,将结果与参考血压装置进行了比较.
主要成果:
- 与参考设备相比,开发的PPG系统实现了3.75±7.28毫秒的平均差异.
- 个别标准偏差值显示了与参考装置可比的结果.
- 该系统为调查BP-PTT关系提供了高质量的信号.
结论:
- 拟议的基于PPG的系统是PTT估计和血液体积变化检测的可行工具.
- 该系统为研究影响BP-PTT关系的因素提供了有价值的方法.
- 这项技术有可能用于非侵入性,长期的心血管监测.
相关概念视频
01:30Pulse rhythm
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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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01:13Special considerations while measuring pulse
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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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01:16Pulse
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When the heart pumps blood out, arterial elastic fibers play a crucial role in sustaining a high-pressure gradient. They expand to accommodate the received blood and then recoil - a process known as the pulse that can be either manually palpated or electronically quantified. Despite a reduction in its effect with increased distance from the heart, elements of the pulse's systolic and diastolic components persist, observable even at the arteriole level.
The pulse serves as a clinical...
The pulse serves as a clinical...
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01:30Equipments Used To Measure Blood Pressure
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Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
975