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相关概念视频

Electrocardiogram01:29

Electrocardiogram

2.3K
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
2.3K
Instrumentation Amplifier01:25

Instrumentation Amplifier

517
An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
517
Pulse rhythm01:30

Pulse rhythm

798
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...
798
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

881
An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
881
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

599
Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
599

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相关实验视频

Updated: Jul 2, 2025

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice
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一个高性能系统用于弱心电图实时检测.

Kun Xu1,2, Yi Yang1, Yu Li1,2

  • 1School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China.

Sensors (Basel, Switzerland)
|February 24, 2024
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的多通道信号叠加系统,用于使用可穿戴设备进行高质量的门诊心电图 (ECG) 检测. 该系统实现了出色的信号质量和精确的心率监测,证明了其远程心血管健康评估的可行性.

关键词:
这是一个ECGECGECGECGECG.电极阵列是一个电极阵列.多通道系统多通道系统.噪音抑制可以抑制噪音.

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Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
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相关实验视频

Last Updated: Jul 2, 2025

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Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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科学领域:

  • 生物医学工程 生物医学工程
  • 可穿戴技术可穿戴技术
  • 心血管监测 心血管监测

背景情况:

  • 可穿戴设备对于家庭医疗保健至关重要,随着门诊心电图 (ECG) 提供重要的心血管数据.
  • 将传感器集成到现有的可穿戴设备 (如手表或腕带) 中具有挑战性,因为信号幅度低,阻碍了高质量的心电图检测.

研究的目的:

  • 提出和验证一种使用多通道信号叠加的高性能系统,用于实时检测弱心电图信号.
  • 通过理论分析,模拟和实际实施来证明拟议的系统设计的有效性.

主要方法:

  • 开发了一个检测系统,包括电极阵列,采集板和专用应用程序 (APP).
  • 进行理论分析和模拟以验证系统架构.
  • 测量电气特性,实现常态排斥比率 (CMRR) 100dB,输入推断电压噪声低于1μV.
  • 在耳罩和腕带设备中实施了该技术.

主要成果:

  • 在耳戴式和腕带实现中,实现了超过20dB的信号噪声比 (SNR).
  • 从拟议的系统和标准的I心电图中获得的心率之间的相关系数高于0.99.
  • 实现了优良的电气特性,包括高CMRR和低噪音水平.

结论:

  • 拟议的多通道信号叠加技术使可穿戴设备的高性能,实时弱心电图检测成为可能.
  • 该系统的高精度和可行性得到了与标准心电图记录的强烈相关性证实.
  • 这项技术具有显著的潜力,可用于不引人注目的和可靠的远程心血管监测.