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[Unusual rhythm disorders with a DDD pacemaker].

K H Konz, K D Schick, R Clausnitzer

    Zeitschrift Fur Kardiologie
    |September 1, 1985
    PubMed
    Summary
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    An inadvertent pacemaker lead connection change caused tachycardia in a patient. This diagnosis was confirmed by testing different pacemaker modes and X-ray, showing unchanged lead placement.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Medical Device Technology

    Background:

    • Pacemakers are crucial for managing cardiac rhythm disorders.
    • Dual-chamber pacemakers (DDD) offer sophisticated rate-responsive pacing.
    • Lead integrity is paramount for effective pacemaker function.

    Observation:

    • A patient with a DDD pacemaker developed an unexplained tachycardia.
    • The tachycardia occurred despite no apparent changes in lead position.
    • Diagnostic pacing modes (AOO, VOO) were employed to investigate the arrhythmia.

    Findings:

    • An inadvertent alteration in pacemaker lead connections was identified as the cause of the tachycardia.
    • Graphical analysis of the pacemaker's marker channel aided in diagnosing the lead malfunction.

    Related Experiment Videos

  • X-ray examination confirmed that the physical position of the pacemaker leads remained unchanged.

    • Implications:

    • This case highlights the importance of verifying lead connections during pacemaker troubleshooting.
    • Accurate interpretation of pacemaker diagnostics, including marker channels, is essential.
    • Potential for lead malfunction, even with stable lead placement, necessitates thorough evaluation.