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 Experiment Videos

QT interval prolongation.

J L Scott, R M Walls

    The Journal of Emergency Medicine
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    The QT interval measures ventricular repolarization and is inversely related to heart rate. QT prolongation, often caused by medications or hypocalcemia, can lead to dangerous heart rhythms like Torsades des pointes.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Golden-rod Killing Horses.

    The Journal of comparative medicine and veterinary archives·2022
    Same author

    On the subtle tuneability of cellulose hydrogels: implications for binding of biomolecules demonstrated for CBM 1.

    Journal of materials chemistry. B·2020
    Same author

    Carbohydrate binding modules enhance cellulose enzymatic hydrolysis by increasing access of cellulases to the substrate.

    Carbohydrate polymers·2019
    Same author

    BIVALVE HEMOCYANIN: STRUCTURAL, FUNCTIONAL, AND PHYLOGENETIC RELATIONSHIPS.

    The Biological bulletin·2018
    Same author

    Mucosal tolerance of the hookworm Ancylostoma caninum in the gut of naturally infected wild dogs.

    Parasite immunology·2015
    Same author

    Acute inflammation with induction of anaphylatoxin C5a and terminal complement complex C5b-9 associated with multiple intra-articular injections of hylan G-F 20: a case report.

    Osteoarthritis and cartilage·2012
    Same journal

    Response to: "Letter to the Editor Regarding Cervical Spine Clearance in Adult and Pediatric Trauma: A Systematic Review".

    The Journal of emergency medicine·2026
    Same journal

    Ultrasound Characterization of the Distal Thigh Great Saphenous Vein Dimensions in Children and Adults: Implications for Peripheral Rescue Access.

    The Journal of emergency medicine·2026
    Same journal

    A Shadow in the Right Ventricle.

    The Journal of emergency medicine·2026
    Same journal

    Structural Determinants of Telehealth Use Among Patients Presenting to an Urban Safety-Net Emergency Department.

    The Journal of emergency medicine·2026
    Same journal

    Comparison of Over-the-Head and Standard Lateral Cardiopulmonary Resuscitation: A Prospective Crossover Simulation Study.

    The Journal of emergency medicine·2026
    Same journal

    Time-Critical Diagnosis of Pediatric Testicular Torsion in a Tertiary Pediatric Emergency Setting: Integrating Clinical Predictors With Selective Doppler Ultrasound.

    The Journal of emergency medicine·2026
    See all related articles

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Pharmacology

    Background:

    • The QT interval reflects ventricular repolarization, crucial for cardiac electrical activity.
    • Its duration is inversely proportional to heart rate.
    • Abnormalities can predispose individuals to serious cardiac arrhythmias.

    Purpose of the Study:

    • To define the QT interval and its clinical significance.
    • To identify common causes and associations of QT prolongation.
    • To outline the risks and management strategies for prolonged QT intervals.

    Main Methods:

    • Review of the physiological basis of the QT interval.
    • Analysis of etiological factors contributing to QT prolongation.
    • Description of associated ventricular dysrhythmias and treatment approaches.

    Related Experiment Videos

    Main Results:

    • QT interval is measured from QRS onset to T wave end.
    • Common causes include Type I antidysrhythmics, phenothiazines, hypocalcemia, and congenital long QT syndromes.
    • QT prolongation is linked to Torsades des pointes.

    Conclusions:

    • Understanding QT interval dynamics is vital for cardiac health.
    • Identifying and addressing causes of QT prolongation is essential for preventing arrhythmias.
    • Management involves correcting underlying conditions or discontinuing causative agents.