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Related Experiment Videos

Simultaneous atrial and ventricular electrogram transmission via a specialized single lead system.

H C Hughes, S Furman, R R Brownlee

    Pacing and Clinical Electrophysiology : PACE
    |November 1, 1984
    PubMed
    Summary
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    A new pacemaker system can now transmit the complete electrogram (EGM) for both normal and paced heart rhythms. This advancement allows for accurate detection of normal and abnormal cardiac activity, improving pacemaker monitoring.

    Area of Science:

    • Biomedical Engineering
    • Cardiology
    • Medical Devices

    Background:

    • Existing pacemakers struggle to transmit complete electrograms (EGM) during various heart rhythms.
    • Current systems can detect only partial EGM data (P-wave or R-wave).

    Purpose of the Study:

    • To introduce a novel lead and telemetry-pacemaker system capable of transmitting the complete EGM.
    • To evaluate the system's performance in detecting normal and abnormal cardiac electrical activity.

    Main Methods:

    • Development of a new lead with atrial and ventricular electrodes for optimized EGM detection.
    • Integration of a telemetry system compatible with telephone monitoring.
    • Implantation of the system in dogs for over two years of testing.

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    Main Results:

    • The system accurately detects and transmits the complete EGM during normal sinus rhythms and various pacing modes.
    • Pacemaker outputs and after-potentials do not adversely affect EGM detection.
    • The system successfully identified EGM abnormalities like ectopic beats and ischemic changes.

    Conclusions:

    • This new system enables noninvasive, telemetric recording of the entire normal and abnormal EGM.
    • It offers improved diagnostic capabilities, even for pacemaker-dependent patients.
    • The technology overcomes limitations of previous telemetrically monitorable pacemakers.