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

Left atrial rhythm in man: an experimental study

M Khalilullah, N K Shrestha, S Padmavati

    Journal of Electrocardiology
    |October 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    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

    A Systematic Review of the Protective Effect of Prior SARS-CoV-2 Infection on Repeat Infection.

    Evaluation & the health professions·2021
    Same author

    Methicillin resistance in Staphylococcus aureus infections among patients colonized with methicillin-susceptible Staphylococcus aureus.

    Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases·2018
    Same author

    Stevens-Johnson Syndrome Report of a Case Treated with Aureomycin.

    The Indian medical gazette·2017
    Same author

    Dr. Mark Eric Josephson (1943-2017).

    Indian pacing and electrophysiology journal·2017
    Same author

    Propionibacterium acnes endocarditis: a case series.

    Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases·2017
    Same author

    Epidemiology and risk factors for infections in myelodysplastic syndromes.

    Transplant infectious disease : an official journal of the Transplantation Society·2013

    Left atrial pacing in patients with atrial septal defects shows variable P wave changes on electrocardiograms (ECG). Typical left atrial rhythm criteria were not consistently met, highlighting the complexity of electrical stimulation effects.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Medical Diagnostics

    Background:

    • Atrial septal defects (ASD) can influence cardiac electrical activity.
    • Understanding left atrial activation patterns is crucial for diagnosing and managing cardiac arrhythmias.
    • Trans-septal left atrial stimulation has not been extensively reported in the literature.

    Purpose of the Study:

    • To investigate the electrocardiographic (ECG) P wave morphology during electrical stimulation of the left atrial endocardium.
    • To assess the variability of P wave changes and the diagnostic criteria for left atrial rhythm in patients with secundum atrial septal defects.

    Main Methods:

    • Ten patients with secundum atrial septal defects underwent diagnostic hemodynamic studies.
    • Electrical stimulation of the left atrial endocardium was performed using a bipolar pacing electrode catheter.

    Related Experiment Videos

  • 12-lead ECGs were recorded during sinus rhythm and left atrial pacing to analyze P wave polarity, frontal plane axis, and configuration.

    • Main Results:

    • Nine out of ten patients showed upright P waves in lead V1 during left atrial pacing.
    • Four patients exhibited the "dome and dart" P wave appearance in V1.
    • Only one patient met all criteria for left atrial rhythm, indicating significant variability in ECG responses.

    Conclusions:

    • Electrical stimulation of the left atrium in patients with secundum ASD leads to variable P wave changes on ECG.
    • The typical diagnostic criteria for left atrial rhythm are not consistently observed in all patients undergoing this procedure.
    • Further research is warranted to fully elucidate the implications of left atrial pacing on cardiac electrical activity.