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Related Experiment Videos

Delayed pulse generator malfunction after D.C. countershock.

R T Palac, M H Hwang, M L Klodnycky

    Pacing and Clinical Electrophysiology : PACE
    |March 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    Pacemaker malfunction can occur after defibrillation. This case shows a delayed malfunction 13 days post-shock, altering pacemaker mode.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Electrophysiology

    Background:

    • Defibrillation and cardioversion are critical procedures for managing cardiac arrhythmias.
    • Pacemakers are essential devices for regulating heart rhythm.
    • Previous reports indicate immediate pacemaker malfunction post-electrical shock.

    Observation:

    • A patient's pacemaker initially appeared functional after direct current (D.C.) countershock.
    • The pacemaker malfunctioned 13 days after the electrical cardioversion procedure.
    • The malfunction involved a mode change from R-wave inhibited to R-wave synchronous.

    Findings:

    • Delayed pacemaker malfunction is a potential complication of defibrillation/cardioversion.
    • Pacemaker mode reprogramming can occur days after electrical cardioversion.

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  • This suggests a subtle, cumulative effect of electrical shock on pacemaker function.

    • Implications:

    • Clinicians should consider delayed pacemaker malfunction in patients post-cardioversion.
    • Routine pacemaker follow-up may need adjustment after electrical cardioversion.
    • Further research is needed to understand the mechanisms of delayed pacemaker interference.