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相关概念视频

Electrocardiogram01:29

Electrocardiogram

5.3K
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...
5.3K
Pulse rhythm01:30

Pulse rhythm

1.3K
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...
1.3K
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

12.1K
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....
12.1K
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

702
Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
702
Assessment of the Cardiovascular System IV: Auscultation01:25

Assessment of the Cardiovascular System IV: Auscultation

1.6K
Cardiac auscultation is a clinical skill used to assess heart function and detect abnormalities. It involves listening to heart sounds at specific anatomical locations through a stethoscope.
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.
1.6K
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

311
Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
311

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相关实验视频

Updated: Jan 8, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
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Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

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电脑心电图声音化方法,以提供可靠和可通用的临床决策支持.

Mohamed Elgendi1,2, Azza Elkhalifa3, Maha Alshehhi3

  • 1Department of Biomedical Engineering and Biotechnology, Khalifa University, Abu Dhabi, United Arab Emirates. mohamed.elgendi@ku.ac.ae.

NPJ digital medicine
|December 15, 2025
PubMed
概括

电心电图 (ECG) 声化将心脏信号转化为声音,用于实时诊断. 本次审查强调了它的好处和局限性,呼吁进行标准化报告以推进临床使用.

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Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease
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Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease

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Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis

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相关实验视频

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Signal Acquisition, Score Interpretation, and Economics of a Non-Invasive Point-of-Care Test for Coronary Artery Disease
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Author Spotlight: Advancing the Study of Brain-Heart Interplay with a Comprehensive EEGLAB Plugin for Multimodal Signal Analysis
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科学领域:

  • 生物医学工程 生物医学工程
  • 医疗信息学 医疗信息学
  • 听觉显示器 听觉显示器

背景情况:

  • 电心电图 (ECG) 声化提供了一个实时的听觉反通道,补充视觉解释.
  • 这项技术旨在通过声音传递诊断线索,可能有助于患者监测和治疗指导.

研究的目的:

  • 审查过去十年 (2015-2025年) ECG音效化的方法格局.
  • 确定研究缺口,并为可靠和临床可翻译的ECG声化系统提出标准.

主要方法:

  • 一项系统的文献搜索确定了八项相关的同行评审研究.
  • 分析包括信号采集,预处理,听觉映射策略 (例如参数映射,调制,ML解码) 和评估指标.

主要成果:

  • 电脑心电图声学证明了诸如改善感知暗示检测和减少认知负载等好处.
  • 限制包括样本规模小,音频参数报告不一致,临床验证不足.

结论:

  • 标准化报告和分阶段评估途径对于开发可重复和临床适用的心电图声学系统至关重要.
  • 需要进一步的研究来克服当前的局限性并提高概括性.