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[Inactivation of implanted demand pacemaker through external stimulation]

H Fill, R Gmeiner

    Acta Medica Austriaca
    |January 1, 1978
    PubMed
    Summary
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    External chest wall stimulation effectively suppresses pacemakers, aiding in identifying pacemaker dependency. This method revealed sensing issues in some patients, highlighting its diagnostic value.

    Area of Science:

    • Cardiology
    • Electrophysiology
    • Medical Devices

    Context:

    • Pacemaker implantation is common for heart rhythm disorders.
    • Assessing pacemaker dependency is crucial for patient management.
    • External stimulation offers a non-invasive diagnostic approach.

    Purpose:

    • To evaluate the efficacy of external chest wall stimulation for overdrive suppression of implanted pacemakers.
    • To identify patients dependent on their pacemakers.
    • To assess pacemaker sensing function.

    Summary:

    • External chest wall stimulation was applied to 87 patients to suppress implanted pacemakers.
    • Inability to inactivate pacemakers indicated disturbed sensing in 12 patients.
    • Seventy-seven patients showed significant escape rhythm changes, with 14 experiencing increased A-V block or heart rate alterations.

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    Impact:

    • Overdrive suppression is a valuable tool for selecting pacemaker-dependent patients.
    • Identifies potential pacemaker sensing dysfunctions.
    • Provides insights into pacemaker-device interactions and patient physiology.