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Related Concept Videos

Electrocardiogram01:29

Electrocardiogram

7.5K
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...
7.5K
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

17.8K
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....
17.8K
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

1.9K
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...
1.9K
Pulse rhythm01:30

Pulse rhythm

1.6K
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...
1.6K
Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

14.5K
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
14.5K
Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

4.1K
Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
4.1K

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Related Experiment Video

Updated: Mar 21, 2026

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
06:07

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

Published on: May 23, 2021

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Automatic Real-Time Embedded QRS Complex Detection for a Novel Patch-Type Electrocardiogram Recorder.

Dorthe B Saadi, George Tanev, Morten Flintrup

    IEEE Journal of Translational Engineering in Health and Medicine
    |May 13, 2016
    PubMed
    Summary

    A new algorithm for automatic heart beat detection in electrocardiograms (ECGs) has been developed for real-time analysis. This innovation enhances early diagnosis of cardiovascular diseases, improving patient outcomes.

    Keywords:
    Automatic QRS complex detectionePatch ECG recorderembedded ECG analysispatch type ECG recorderreal-time ECG analysis

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    Area of Science:

    • Biomedical Engineering
    • Cardiology
    • Signal Processing

    Background:

    • Cardiovascular diseases are the leading global cause of death.
    • Early diagnosis of arrhythmias via electrocardiograms (ECGs) is critical for timely intervention.
    • Ambulatory, long-term ECG monitoring is increasingly accessible with novel patch-type recorders.

    Purpose of the Study:

    • To design a novel algorithm for automatic heart beat detection.
    • To embed this algorithm into the CE-marked ePatch heart monitor for real-time analysis.
    • To validate the clinical performance of the embedded algorithm.

    Main Methods:

    • Development of a novel algorithm using a cascade of efficient filters, adaptive thresholding, and a search-back mechanism.
    • Algorithm design and optimization using the MIT-BIH arrhythmia and a private ePatch training database.
    • Offline and double-blinded validation on the European ST-T and a private ePatch validation database.

    Main Results:

    • High clinical performance validated on over 300 ECG records from 189 subjects.
    • Successful detection of a high number of different abnormal beat morphologies.
    • Demonstrated accuracy and reliability of the embedded algorithm.

    Conclusions:

    • The novel algorithm demonstrates high clinical performance for automatic heart beat detection.
    • The embedded algorithm in the ePatch monitor shows potential for improving early diagnosis of cardiovascular diseases.
    • This technology can enhance timely treatment and reduce complications from arrhythmias.