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Related Concept Videos

Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

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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...
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ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

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Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
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Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

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Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
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Electrocardiogram01:29

Electrocardiogram

2.9K
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...
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Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

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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...
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ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

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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....
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Related Experiment Video

Updated: Aug 17, 2025

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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Efficient Lightweight Multimodel Deep Fusion Based on ECG for Arrhythmia Classification.

Mohamed Hammad1, Souham Meshoul2, Piotr Dziwiński3

  • 1Department of Information Technology, Faculty of Computers and Information, Menoufia University, Shibin El Kom 32511, Egypt.

Sensors (Basel, Switzerland)
|December 11, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a lightweight deep learning multimodel for accurate arrhythmia detection using electrocardiogram (ECG) signals. The novel approach improves upon single models and existing methods, aiding in early diagnosis and reducing fatality risks.

Keywords:
CNNECGarrhythmiafusionlightweightmultimodel

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Area of Science:

  • Cardiology
  • Artificial Intelligence
  • Biomedical Engineering

Background:

  • Arrhythmias result from irregular electrical signals in the heart, increasing risks of stroke and cardiac arrest.
  • Early detection of arrhythmias is crucial for reducing mortality rates.

Purpose of the Study:

  • To develop a lightweight multimodel using convolutional neural networks (CNNs) for arrhythmia classification from ECG signals.
  • To enable knowledge transfer from multiple deep learning models into a single, efficient diagnostic tool.

Main Methods:

  • A novel multimodel architecture based on CNNs was designed for knowledge consolidation.
  • The model was trained and validated using a publicly accessible electrocardiogram (ECG) database.
  • Performance was benchmarked against single-model approaches and existing arrhythmia detection methodologies.

Main Results:

  • The developed multimodel demonstrated superior performance in classifying arrhythmias compared to single models.
  • The system outperformed most previously reported arrhythmia detection methods.
  • Accurate classification was achieved even with limited data collections.

Conclusions:

  • The lightweight multimodel offers an effective and efficient solution for arrhythmia diagnosis using ECG data.
  • This AI-driven tool can assist medical experts in decision-making and expedite the diagnostic process.
  • The model's accuracy and efficiency hold significant potential for improving patient outcomes in arrhythmia management.