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

ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

14.2K
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....
14.2K
Correlation between ECG and Cardiac Cycle01:25

Correlation between ECG and Cardiac Cycle

12.6K
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...
12.6K
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

853
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
853
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

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

587
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...
587
Self-Presentation: Self-Monitoring and Self-Handicapping02:05

Self-Presentation: Self-Monitoring and Self-Handicapping

44.8K
People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about...
44.8K
Trait and State Self-Esteem02:08

Trait and State Self-Esteem

11.5K
The term self-esteem is often used generically, to refer to how people feel about themselves. However, according to research, there are three distinct constructs that should not be used interchangeably (Brown & Marshall, 2006). 
11.5K

You might also read

Related Articles

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

Sort by
Same author

Defence Medical Services' REBOA training course.

BMJ military health·2021
Same author

Balloons on the battlefield: REBOA implementation in the UK Defence Medical Services.

BMJ military health·2021
Same author

The REBOA window: a cadaveric study delineating the optimum site for austere cannulation of the femoral artery for resuscitative endovascular balloon occlusion of the aorta.

BMJ military health·2020
Same author

Application of automated electron microscopy imaging and machine learning to characterise and quantify nanoparticle dispersion in aqueous media.

Journal of microscopy·2019
Same author

Organic matter identifies the nano-mechanical properties of native soil aggregates.

Nanoscale·2017
Same author

Shocking the system: AEDs in military resuscitation.

Journal of the Royal Army Medical Corps·2017
Same journal

Humidifier fever on a Type 42 destroyer.

Journal of the Royal Naval Medical Service·2018
Same journal

Humidifier fever on a Type 42 destroyer.

Journal of the Royal Naval Medical Service·2018
Same journal

Conditions of the external and middle ear: an overview of presentation, management and associated complications.

Journal of the Royal Naval Medical Service·2018
Same journal

Obstructive jaundice: a clinical review for the UK armed forces.

Journal of the Royal Naval Medical Service·2018
Same journal

Comparison of glycated haemoglobin and fasting blood glucose in the diagnosis of diabetes mellitus and pre-diabetes in a cohort of obese patients.

Journal of the Royal Naval Medical Service·2018
Same journal

CrossFitter’s knee: patellofemoral chondral injury following high-intensity functional training.

Journal of the Royal Naval Medical Service·2018
See all related articles

Related Experiment Video

Updated: Feb 8, 2026

A Neuroscientific Approach to the Examination of Concussions in Student-Athletes
11:32

A Neuroscientific Approach to the Examination of Concussions in Student-Athletes

Published on: December 8, 2014

13.2K

The athletic ECG.

A Proffitt, P Rees

    Journal of the Royal Naval Medical Service
    |July 10, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This review clarifies normal electrocardiogram (ECG) findings and physiological changes in athletes due to cardiac conditioning. It helps differentiate athletic ECG variations from pathology in service personnel.

    More Related Videos

    Ambulatory ECG Recording in Mice
    08:00

    Ambulatory ECG Recording in Mice

    Published on: May 27, 2010

    24.8K
    A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion
    10:31

    A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion

    Published on: September 25, 2014

    14.0K

    Related Experiment Videos

    Last Updated: Feb 8, 2026

    A Neuroscientific Approach to the Examination of Concussions in Student-Athletes
    11:32

    A Neuroscientific Approach to the Examination of Concussions in Student-Athletes

    Published on: December 8, 2014

    13.2K
    Ambulatory ECG Recording in Mice
    08:00

    Ambulatory ECG Recording in Mice

    Published on: May 27, 2010

    24.8K
    A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion
    10:31

    A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion

    Published on: September 25, 2014

    14.0K

    Area of Science:

    • Cardiology
    • Exercise Physiology

    Background:

    • The electrocardiogram (ECG) is a fundamental diagnostic tool in cardiology.
    • Accurate ECG interpretation is crucial for diagnosing acute and chronic cardiac conditions.
    • Physiological adaptations occur in the ECG with sustained aerobic exercise, known as cardiac conditioning.

    Observation:

    • Service personnel often engage in high-intensity exercise, potentially leading to cardiac conditioning.
    • Standard ECG parameters are established for the general population.
    • Athletic cardiac conditioning can induce non-pathological changes in the ECG.

    Findings:

    • This review details normal ECG parameters and discusses alterations seen with aerobic conditioning.
    • It focuses on identifying physiological, non-pathological ECG changes in athletes.
    • The aim is to aid interpretation of ECGs in individuals undergoing significant physical training.

    Implications:

    • Distinguishing physiological athletic ECG changes from cardiac pathology is essential for accurate diagnosis.
    • This knowledge supports the appropriate medical management of service personnel.
    • Improved understanding can prevent misdiagnosis and unnecessary interventions in athletes.