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An automated simultaneous transmural cardiac mapping system.

F X Witkowski, P B Corr

    The American Journal of Physiology
    |October 1, 1984
    PubMed
    Summary
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    This study presents a novel system for cardiac mapping, enabling simultaneous acquisition and digital processing of electrograms from 240 sites. This overcomes data storage and analysis challenges for detailed arrhythmia mechanism elucidation.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Electrophysiology

    Background:

    • Accurate cardiac depolarization mapping requires simultaneous 3D data from multiple sites.
    • Understanding arrhythmia mechanisms necessitates tracking impulse propagation, especially for rapid events.
    • Large data storage and analysis needs hinder detailed cardiac electrophysiological studies.

    Purpose of the Study:

    • To develop a system overcoming data storage and analysis limitations for cardiac mapping.
    • To enable simultaneous acquisition and processing of electrograms from numerous cardiac sites.
    • To facilitate rapid, detailed analysis of cardiac impulse propagation for research and clinical applications.

    Main Methods:

    • Simultaneous analog-to-digital conversion of bipolar electrograms from 240 cardiac sites at 2 kHz.

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  • Continuous data storage for up to 60 minutes.
  • Generation of rapid 2D isochronic maps at multiple depths (effective 3D) using interactive computer graphics.

    • Main Results:

    • The system effectively overcomes data storage and analysis challenges for high-density electrograms.
    • Real-time, multi-site electrogram acquisition and processing are achieved.
    • System allows for easy expansion to nearly 2,000 simultaneous sites.

    Conclusions:

    • The developed system provides a powerful tool for experimental and clinical cardiac mapping.
    • It enables direct, rapid visualization of electrogram data for comprehensive analysis.
    • This technology facilitates a deeper understanding of cardiac depolarization and arrhythmia mechanisms.