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

Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

171
Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
171
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

1.6K
Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
1.6K
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

980
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...
980
Brain Waves01:23

Brain Waves

2.3K
Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
2.3K
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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

204
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...
204
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

200
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...
200

You might also read

Related Articles

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

Sort by
Same author

OMI: time for early recognition and management of acute coronary occlusion.

The Egyptian heart journal : (EHJ) : official bulletin of the Egyptian Society of Cardiology·2026
Same author

The illusion of simplicity: Diagnostic inconsistencies within the STEMI paradigm.

Journal of electrocardiology·2026
Same author

The cost of false dichotomies in a dynamic disease.

Trends in cardiovascular medicine·2026
Same author

A Consensus List of Core Competencies in Emergency Airway Management for Graduating Emergency Physicians: A Modified Delphi Study.

AEM education and training·2026
Same author

Can an artificial intelligence electrocardiogram algorithm improve diagnostic accuracy for acute coronary occlusion in the difficult subset of canceled catheterization lab activations?

Journal of electrocardiology·2026
Same author

Performance of Artificial Intelligence-Powered ECG Analysis in Suspected ST-Segment Elevation Myocardial Infarction.

JACC. Advances·2026
Same journal

Managing Rheumatic Mitral Stenosis Complicated by Shock and Cardiac Cirrhosis Beyond Guidelines.

JACC. Case reports·2026
Same journal

Transfemoral TAVR in Chronic Type A Aortic Dissection and Severe Aortic Stenosis.

JACC. Case reports·2026
Same journal

Papillary Endothelial Hyperplasia Mimicking Right Atrial Infective Thrombus: Percutaneous Aspiration and Diagnosis.

JACC. Case reports·2026
Same journal

Inclisiran Response in a Patient With Familial Hypercholesterolemia After Suboptimal Response to Evolocumab.

JACC. Case reports·2026
Same journal

Dual-Level Left Ventricular Outflow Tract Obstruction in an Adult.

JACC. Case reports·2026
Same journal

Combining Renal Autotransplantation and Endovascular Aortic Repair for Abdominal Aortic Aneurysm in an LVAD Patient.

JACC. Case reports·2026
See all related articles

Related Experiment Video

Updated: Oct 20, 2025

In Vivo Surface Electrocardiography for Adult Zebrafish
09:13

In Vivo Surface Electrocardiography for Adult Zebrafish

Published on: August 1, 2019

14.4K

Bizarre T Waves: What Do They Mean?

Alexander Bracey1, H Pendell Meyers2, Stephen W Smith3,4

  • 1Department of Emergency Medicine, Division of Critical Care, Albany Medical Center, Albany, New York, USA.

JACC. Case Reports
|September 10, 2021
PubMed
Summary
This summary is machine-generated.

Electrocardiogram (ECG) artifacts, like bizarre T waves, can mimic real cardiac issues. Proper lead placement inspection is crucial for accurate ECG interpretation, especially when unexpected findings arise.

Keywords:
ECGECG, electrocardiogramSTE, ST-segment elevationartery pulse tapping artifactartifact

More Related Videos

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits
10:25

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits

Published on: March 27, 2021

6.2K
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

13.5K

Related Experiment Videos

Last Updated: Oct 20, 2025

In Vivo Surface Electrocardiography for Adult Zebrafish
09:13

In Vivo Surface Electrocardiography for Adult Zebrafish

Published on: August 1, 2019

14.4K
Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits
10:25

Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits

Published on: March 27, 2021

6.2K
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

13.5K

Area of Science:

  • Cardiology
  • Medical Imaging
  • Biomedical Engineering

Background:

  • Electrocardiography (ECG) is fundamental in diagnosing cardiac conditions.
  • Artifacts frequently complicate ECG interpretation, potentially leading to misdiagnosis.
  • Pulsatile artifacts can mimic pathological T-wave changes.

Purpose of the Study:

  • To report a unique case of T-wave artifact caused by an arterial pulsatile fistula.
  • To highlight the importance of lead placement in ECG artifact identification.
  • To provide insights for clinicians encountering unusual ECG findings.

Main Methods:

  • Case report describing an unusual ECG finding.
  • Review of the patient's electrocardiogram and electrode placement.
  • Correlation of artifact with external pulsatile source.

Main Results:

  • Bizarre T-wave morphology was observed on the ECG.
  • The artifact was traced to the left arm electrode positioned near a pulsatile fistula.
  • Artery pulse tapping artifact was identified as the cause.

Conclusions:

  • Artifacts can present as significant waveform abnormalities on ECG.
  • Systematic inspection of lead placement is essential for diagnosing ECG artifacts.
  • Understanding potential artifact sources improves diagnostic accuracy in electrocardiography.