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Related Experiment Videos

Unexplained syncope--a diagnostic pacemaker?

D B Shaw, C A Kekwick, D Veale

    Pacing and Clinical Electrophysiology : PACE
    |July 1, 1983
    PubMed
    Summary
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    This study introduces a dual-function pacemaker that records cardiac arrest events and provides pacing. The device aids in diagnosing infrequent loss of consciousness by identifying cardiac mechanisms.

    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Background:

    • Infrequent episodes of loss of consciousness (LOC) pose diagnostic challenges.
    • Identifying cardiac mechanisms in unexplained syncope is crucial for appropriate management.

    Purpose of the Study:

    • To evaluate the initial clinical experience with a novel dual-function pacemaker.
    • To assess the device's utility in diagnosing cardiac causes of infrequent LOC.

    Main Methods:

    • A programmable pacemaker with a prolonged escape interval and event-recording capabilities was implanted.
    • Twenty-five patients with recurrent, unexplained LOC were studied.

    Main Results:

    • The pacemaker successfully recorded episodes of ventricular standstill in 14 patients.

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  • Syncope resolved in these 14 cases.
  • The device helped rule out cardiac etiology in two patients.

    • Conclusions:

    • The bradycardia-recording pacemaker is a valuable tool for diagnosing infrequent LOC when cardiac mechanisms are suspected.
    • This technology can differentiate cardiac from non-cardiac causes of syncope.