Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Cardiac Action Potential01:30

Cardiac Action Potential

1.4K
Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
The cardiac action potential process involves a series of phases characterized by the movement of ions across the cardiac cell membranes, leading to the depolarization and repolarization of the cardiac myocytes.
Ionic Basis of Cardiac Action Potentials
1.4K
Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

5.0K
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...
5.0K
Electrophysiology of Normal Cardiac Rhythm01:19

Electrophysiology of Normal Cardiac Rhythm

3.9K
The normal cardiac rhythm is a synchronized electrical activity that facilitates the regular and coordinated contraction of the heart muscle. This process is essential for efficient blood circulation throughout the body. The fundamental elements involved in establishing and maintaining this rhythm include the unique electrical properties of cardiac muscle cells, the sinoatrial (SA) node's pacemaker function, the specialized conducting system, and the ionic mechanisms underlying each phase...
3.9K
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

808
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....
808
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
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

575
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...
575

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Endometrial carcinosarcoma presenting with a solitary breast metastasis - A rare case report.

Gynecologic oncology reports·2025
Same author

Sex differences in atrial remodeling and atrial fibrillation recurrence after catheter ablation.

Heart rhythm·2025
Same author

Valve Thrombosis Following Transcatheter Aortic Valve Replacement: State-of-the-Art Review.

Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions·2025
Same author

Unique Genetic Profiles in Hypertrophic Cardiomyopathy Patients From São Miguel Island (Azores, Portugal).

Clinical genetics·2024
Same author

Impact of an Exercise-Based Cardiac Rehabilitation Program on Cardiopulmonary Test Parameters.

Cardiology·2024
Same author

Answer: Multiple free-floating cardiac masses in a young woman with pulmonary embolism.

European heart journal. Acute cardiovascular care·2024
Same journal

Recurrent Pulmonary Embolism After Pulmonary Endarterectomy During Rivaroxaban Therapy in a Resource-Limited Setting.

JACC. Case reports·2026
Same journal

Sudden Cardiac Arrest and Takotsubo-Like Cardiomyopathy as the Initial Presentation of Primary Carnitine Deficiency.

JACC. Case reports·2026
Same journal

Secondary Cardiac Lymphoma Presenting as Effusive-Constrictive Pericarditis.

JACC. Case reports·2026
Same journal

Left Ventricular Outflow Tract Rupture in a Case of Pediatric Bicuspid Aortic Valve Endocarditis.

JACC. Case reports·2026
Same journal

Lyme Myopericarditis With Effusive-Constrictive Physiology: Serial CMR Identifies a Reversible Inflammatory Phenotype.

JACC. Case reports·2026
Same journal

Transcatheter Edge-to-Edge Repair of a Functionally Trileaflet Mitral Valve.

JACC. Case reports·2026
See all related articles

Related Experiment Video

Updated: Jun 28, 2025

In Vivo Surface Electrocardiography for Adult Zebrafish
09:13

In Vivo Surface Electrocardiography for Adult Zebrafish

Published on: August 1, 2019

14.2K

Reply: Respirophasic Changes in the QRS Axis

Maria Inês Barradas, Fabiana Duarte, Inês Coutinho Dos Santos

    JACC. Case Reports
    |April 22, 2024
    PubMed
    Summary

    No abstract available in PubMed .

    More Related Videos

    High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
    09:17

    High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation

    Published on: July 29, 2011

    14.8K
    Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography
    09:23

    Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography

    Published on: November 24, 2016

    13.3K

    Related Experiment Videos

    Last Updated: Jun 28, 2025

    In Vivo Surface Electrocardiography for Adult Zebrafish
    09:13

    In Vivo Surface Electrocardiography for Adult Zebrafish

    Published on: August 1, 2019

    14.2K
    High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
    09:17

    High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation

    Published on: July 29, 2011

    14.8K
    Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography
    09:23

    Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography

    Published on: November 24, 2016

    13.3K