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Pulse

Pulse

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...

Equipments Used To Measure Blood Pressure

Equipments Used To Measure Blood Pressure

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...

Assessment of apical radial pulse

Assessment of apical radial pulse

Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation

Assessment of radial pulse

Assessment of radial pulse

Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:

Pulse rhythm

Pulse rhythm

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...

Special considerations while measuring pulse

Special considerations while measuring pulse

Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:

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相关实验视频

Updated: Jun 3, 2025

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

使用毫米波阵列雷达进行非接触稳定动脉脉冲测量.

Fanglin Geng^1,2, Zhongrui Bai^1,3, Hao Zhang^1,2

¹Aerospace Information Research Institute, Chinese Academy of Sciences (AIRCAS), Beijing 100094, China.

Bioengineering (Basel, Switzerland)

|January 8, 2025

概括

这项研究引入了一种用于稳定动脉脉冲测量的雷达方法. 无接触技术确保了随着时间的推移保持一致的脉冲形态,这对于心血管监测至关重要.

关键词:

大阵列的毫米波雷达.多部位动脉多部位动脉非接触式脉冲波测量方法目标本地化和聚焦.

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Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging

Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging

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相关实验视频

Last Updated: Jun 3, 2025

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Ultrasound-based Pulse Wave Velocity Evaluation in Mice

Published on: February 14, 2017

Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging

Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging

Published on: February 7, 2014

Author Spotlight: Assessing the Cardiovascular Profile of Patients with Metabolic Syndrome

Published on: September 27, 2024

科学领域:

生物医学工程生物医学工程
心血管监测心血管监测
雷达信号处理雷达信号处理

背景情况:

动脉脉冲信号对于评估心血管健康至关重要.
基于雷达的脉冲检测面临信号稳定性和形态学随时间变化的一致性方面的挑战.

研究的目的:

使用毫米波雷达开发一种非接触式动脉脉冲测量方法.
为了在不同的测量周期中实现稳定的脉冲信号形态.
提供基于雷达的脉冲测量可靠性的定量评估.

主要方法:

利用毫米波雷达进行非接触式脉冲信号采集.
实现了范围角度聚焦算法,以提高信号稳定性.
在不同的测量时间下,对六个受试者进行了实验.

主要成果:

在不同测量时间的相同身体部位的脉冲形态 (相关性>0.84) 中实现了高一致性.
在四个关键脉冲标志中表现出稳定性.
分析了雷达阵列大小和测量距离对信号质量的影响.

结论:

开发的毫米波雷达方法为动脉脉冲测量提供了稳定和一致的非接触方法.
这种技术提供了使用雷达技术进行长期心血管监测的可靠框架.
结果为各种研究应用提供了对阵列选择的指导.