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Electrical interference in non-competitive pacemakers.

E Sowton, K Gray, T Preston

    British Heart Journal
    |September 1, 1970
    PubMed
    Summary
    This summary is machine-generated.

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    Electromagnetic interference from common devices can affect pacemaker function. Certain pacemakers, like Cordis Ectocor, showed sensitivity, while others remained unaffected, highlighting the importance of pacemaker design.

    Area of Science:

    • Biomedical Engineering
    • Cardiology
    • Medical Device Technology

    Background:

    • Implanted pacemakers are crucial for cardiac rhythm management.
    • Potential electromagnetic interference (EMI) from external sources poses a risk to pacemaker function.
    • Understanding EMI susceptibility is vital for patient safety and device reliability.

    Purpose of the Study:

    • To investigate the interference effects of common electrical equipment on various implanted non-competitive pacemakers.
    • To assess the sensitivity of different pacemaker models to electromagnetic interference (EMI).

    Main Methods:

    • Forty-one patients with implanted non-competitive pacemakers were studied.
    • Pacemakers were exposed to various domestic electrical equipment, a motor car, and diathermy apparatus at different ranges.

    Related Experiment Videos

  • Electrocardiography (ECG) was used to assess interference effects on pacemaker function.

    • Main Results:

    • Medtronic demand 5841 pacemakers were inhibited by diathermy.
    • Cordis Ectocor pacemakers exhibited a fast discharge rate due to diathermy.
    • Cordis triggered pacemakers (Atricor and Ectocor) were sensitive to interference from domestic equipment and a motor car.
    • Elema EM153 showed an increased rate with proximity to an electric razor.
    • Devices demand 2980 and Medtronic demand 5841 were unaffected by tested domestic equipment.

    Conclusions:

    • Pacemaker sensitivity to electromagnetic interference varies significantly between different models and manufacturers.
    • Diathermy and common electrical devices can disrupt pacemaker function, necessitating careful consideration during device selection and patient counseling.
    • Pacemaker design plays a critical role in mitigating interference effects, emphasizing the need for robust EMI shielding and filtering.