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Related Experiment Videos

Atrio-His bundle tracts.

C Brechenmacher

    British Heart Journal
    |August 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Rare atrio-His bundle tracts, bypassing the atrioventricular node, were identified in histological studies. These findings may explain certain rapid heart rhythms and electrocardiogram patterns.

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    Area of Science:

    • Cardiovascular Pathology
    • Cardiac Electrophysiology

    Background:

    • The atrio-His bundle tracts are exceptionally rare cardiac conduction pathways.
    • Histological analysis of human hearts reveals their infrequent occurrence.

    Purpose of the Study:

    • To document the existence and characteristics of atrio-His bundle tracts.
    • To investigate the potential clinical implications of these rare tracts.

    Main Methods:

    • Histological examination of 687 human hearts.
    • Comparative morphological analysis of identified tracts with the atrioventricular bundle.

    Main Results:

    • Only two instances of atrio-His bundle tracts were discovered.
    • These tracts completely bypass the atrioventricular node, resembling the atrioventricular bundle.

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  • Associated electrocardiogram findings may include short or normal PR intervals.

    • Conclusions:

    • Atrio-His bundle tracts are exceedingly rare cardiac anomalies.
    • Their presence can lead to altered cardiac conduction, potentially causing supraventricular arrhythmias with rapid ventricular response.