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Related Experiment Videos

Pacemaker malfunction following transthoracic countershock.

G Das, J Eaton

    Pacing and Clinical Electrophysiology : PACE
    |September 1, 1981
    PubMed
    Summary
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    Electrical cardioversion can damage pacemakers. A case study shows a pacemaker malfunctioned after electrical shock, requiring careful post-procedure analysis for patient safety.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Medical Device Technology

    Background:

    • Patients with implanted cardiac pacemakers may require electrical cardioversion or defibrillation.
    • High electrical energy from DC transthoracic countershock can potentially damage pacemaker circuitry, leading to malfunction.

    Observation:

    • A case involving a patient with a non-programmable demand pacemaker is presented.
    • The pacemaker underwent synchronized DC countershock.

    Findings:

    • Following the electrical shock, the pacemaker erroneously operated in R-wave triggered mode instead of the intended R-wave inhibited mode.
    • The pacemaker's output voltage was significantly reduced, approximately by half.

    Implications:

    Related Experiment Videos

  • Pacemaker malfunction after electrical cardioversion may be subtle and not immediately obvious.
  • Thorough post-shock analysis is crucial to detect and manage such device dysfunctions.
  • Ensuring pacemaker integrity after electrical procedures is vital for patient safety and effective cardiac rhythm management.