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Related Experiment Videos

Runaway atrioventricular sequential pacemaker after radiation therapy.

R W Lee, S K Huang, E Mechling

    The American Journal of Medicine
    |November 1, 1986
    PubMed
    Summary
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    Radiation therapy can cause pacemaker malfunction, specifically runaway circuitry in programmable atrioventricular sequential (DVI) units. Pacemakers should be shielded during radiation treatment, even if not in the direct radiation field, to prevent device failure.

    Area of Science:

    • Cardiology
    • Medical Physics
    • Oncology

    Background:

    • Programmable atrioventricular sequential (DVI) pacemakers utilize complementary metal oxide semiconductor (CMOS) circuitry.
    • Carcinoma treatment often involves radiation therapy, which can affect implanted electronic devices.

    Observation:

    • Two patients experienced pacemaker malfunction, specifically runaway circuitry, following radiation therapy.
    • One pacemaker was within the direct radiation field, while the other was not.

    Findings:

    • Pacemaker malfunction occurred in both cases, suggesting a link between radiation exposure and device failure.
    • The CMOS circuitry in DVI pacemakers appears susceptible to radiation-induced malfunction.

    Implications:

    Related Experiment Videos

    • Direct irradiation of implanted pacemakers should be avoided.
    • Shielding of pacemakers is recommended during radiation therapy, regardless of direct field exposure.
    • Further research into radiation effects on pacemaker circuitry is warranted to improve patient safety.