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相关概念视频

Special considerations while measuring pulse01:13

Special considerations while measuring pulse

578
Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
578
Pulse rhythm01:30

Pulse 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...
785
Regulation of Pulse01:20

Regulation of Pulse

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Pulse regulation involves physiological mechanisms that ensure adequate blood flow throughout the body. The heartbeat, regulated by the autonomic nervous system, is influenced by hormonal balance, physical activity, and emotional state.
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Pulse01:16

Pulse

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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...
501

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Pulse Wave Velocity Testing in the Baltimore Longitudinal Study of Aging
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脉冲波传输时间的频率依赖变量:试点研究

A A Grinevich1, N K Chemeris2

  • 1Institute of Cell Biophysics, Russian Academy of Sciences, Pushchino, Russia. grin_aa@mail.ru.

Doklady. Biochemistry and biophysics
|May 25, 2024
PubMed
概括

脉冲波传输时间变化 (PWTTV) 提供了关于心率变化 (HRV) 的见解. 这项研究揭示了PWTTV频谱组件转移到高频率比HRV,表明了外围脉冲率变化的独特动态.

科学领域:

  • 心血管生理学心血管生理学
  • 生物医学工程 生物医学工程
  • 信号处理 信号处理

背景情况:

  • 通过脉冲波传输时间变化 (PWTTV) 评估的外围脉冲率变化,可以作为心率变化 (HRV) 的替代品.
  • 了解PWTTV的频率依赖动态对于其在心血管监测中的应用至关重要.

研究的目的:

  • 分析PWTTV的取决于频率的动态.
  • 为了识别脉冲波速度振荡中潜在的频率相调节在传输到远端的上肢时.
  • 探索PWTTV和HRV之间的关系.

主要方法:

  • 利用了来自12名健康受试者的RR间隔记录和光斑血图.
  • 用希尔伯特-黄变换进行光谱分析.
  • 确定了PWTTV和HRV的三个频谱组成部分.

主要成果:

  • PWTTV振荡幅度明显小于HRV幅度 (高达8.4倍).
  • 与HRV相比,PWTTV的光谱成分在更高的频率下观察到.
  • 建立了PWTTV和HRV之间的功能关系,表明脉冲波速度的相调节.

结论:

关键词:
希尔伯特 - 黄的方法心血管系统的心血管系统脉冲波过境时间波形分析波形分析.

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  • 与HRV相比,PWTTV具有不同的光谱特征,其组件转向更高的频率.
  • 这些发现表明,一个影响脉冲波传播速度的相调节机制.
  • PWTTV为评估心血管动态提供了对HRV的补充视角.