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Updated: Nov 9, 2025

Targeting Neuronal Fiber Tracts for Deep Brain Stimulation Therapy Using Interactive, Patient-Specific Models
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How Electrode Position Affects Selective His Bundle Capture: A Modelling Study.

Edward J Vigmond, Aurel Neic, Joshua Blauer

    IEEE Transactions on Bio-Medical Engineering
    |April 9, 2021
    PubMed
    Summary
    This summary is machine-generated.

    Selective His bundle pacing is crucial for cardiac conduction disorders. Computer simulations reveal that direct electrode contact with the His fibre and anodal stimulation enhance selective pacing success.

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    Area of Science:

    • Cardiac Electrophysiology
    • Biomedical Engineering
    • Computational Biology

    Background:

    • Bundle branch block necessitates effective cardiac pacing strategies.
    • Selective His bundle pacing aims to restore normal cardiac activation.
    • Nonselective pacing occurs when surrounding myocardium is also excited.

    Purpose of the Study:

    • Investigate factors influencing His bundle pacing selectivity.
    • Determine properties affecting capture thresholds for improved selective pacing.

    Main Methods:

    • Biophysically detailed computer simulations of His fibre activation.
    • Modeling capture thresholds under varied electrode polarity and orientation.
    • Simulation of His fibre within a septal wedge preparation.

    Main Results:

    • Myocardial and His bundle capture thresholds are similar.
    • His fibre-electrode tip intersection favors His bundle activation.
    • Full septal insertion and anodal stimulation improve selective pacing.

    Conclusions:

    • Electrode tip contact with the His fibre is essential for selective pacing.
    • Anodal stimulation is preferable for achieving selective His bundle pacing.
    • Simulation insights align with clinical observations for selective pacing.