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 IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

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...
Assessment of apical radial pulse01:25

Assessment of apical radial pulse

Apical-Radial (A-R) Pulse Assessment
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

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, and...

You might also read

Related Articles

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

Sort by
Same author

Investigating the Plasmon Resonances of Silicon Nanowires without Oxide Shell.

ACS omega·2026
Same author

Characterizing the microbiota of traditional wooden tools and their impact on the hygiene and quality of TAP Vastedda Palermitana cheese.

International journal of food microbiology·2026
Same author

Determining the microenvironment and protonation state of quercetin encapsulated in pillar[5]arene-based supramolecular nanocarriers.

RSC advances·2026
Same author

Botanical and Upcycled Bioactives for Advanced Topical Formulations: Mechanistic Pathways, Cutaneous Delivery, and Sustainability-by-Design.

Pharmaceutics·2026
Same author

Water-Dispersible Supramolecular Nanoparticles Formed by Dicarboxyl-bis-pillar[5]arene/CTAB Host-Guest Interaction as an Efficient Delivery System of Quercetin.

International journal of molecular sciences·2026
Same author

Microfluidic Design of Ultradeformable Liposomes for Advanced Skin Delivery of <i>Stellaria media</i> Phytocomplex.

Pharmaceutics·2025
Same journal

Hypertension management in obstructive hypertrophic cardiomyopathy patients treated with cardiac myosin inhibitors - real world data.

International journal of cardiology·2026
Same journal

Fully quantitative CMR rest perfusion reveals myocardial perfusion abnormality in Kawasaki disease: Association with left ventricular Remodeling.

International journal of cardiology·2026
Same journal

Predicted adherence and ischaemic stroke risk in atrial fibrillation patients initiating oral anticoagulation: A cohort study of the medication adherence score.

International journal of cardiology·2026
Same journal

Severe tricuspid regurgitation is a congestion-driven cardiorenal disease: A longitudinal study defining a right heart failure phenotype.

International journal of cardiology·2026
Same journal

Applicability of ischemic heart disease clinical practice guidelines in low- and middle-income countries.

International journal of cardiology·2026
Same journal

Effectiveness of a new diagnostic algorithm for the diagnosis of unexplained syncope in patients with hypertrophic cardiomyopathy.

International journal of cardiology·2026
See all related articles

Related Experiment Video

Updated: Jun 26, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

Axis deviation without left bundle branch block.

Salvatore Patanè, Filippo Marte, Antonia Mancuso

    International Journal of Cardiology
    |December 25, 2008
    PubMed
    Summary
    This summary is machine-generated.

    This study reports a rare case of axis deviation in a 65-year-old man, notably without left bundle branch block, atrial fibrillation, or acute myocardial infarction. This finding is unique as such conditions are typically associated with axis deviation.

    More Related Videos

    Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
    08:10

    Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

    Published on: July 20, 2022

    Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
    10:17

    Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

    Published on: April 11, 2025

    Related Experiment Videos

    Last Updated: Jun 26, 2026

    Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
    12:45

    Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

    Published on: December 11, 2017

    Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
    08:10

    Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

    Published on: July 20, 2022

    Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
    10:17

    Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

    Published on: April 11, 2025

    Area of Science:

    • Cardiology
    • Electrocardiography
    • Clinical Case Reports

    Background:

    • Changing axis deviation is infrequently documented, particularly when associated with left bundle branch block, atrial fibrillation, and acute myocardial infarction.
    • Previous reports highlight the rarity of axis deviation changes coinciding with altered bundle branch block patterns during atrial fibrillation and acute myocardial infarction.

    Observation:

    • A case of axis deviation was observed in a 65-year-old Italian male patient.
    • The patient presented without evidence of left bundle branch block, atrial fibrillation, or acute myocardial infarction.

    Findings:

    • This case represents the first reported instance of axis deviation occurring independently of left bundle branch block, atrial fibrillation, and acute myocardial infarction.
    • The electrocardiographic findings in this patient challenge typical associations with axis deviation.

    Implications:

    • This case expands the differential diagnosis for axis deviation, suggesting it can occur in the absence of common precipitating factors.
    • Further research may be warranted to understand the underlying mechanisms of isolated axis deviation.
    • Clinicians should consider a broader range of possibilities when interpreting axis deviation on electrocardiograms.