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A new test for pacemaker leads: capacitance measurement

A E Aubert, H Ector, H De Geest

    Journal of Electrocardiology
    |October 1, 1978
    PubMed
    Summary
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    A new device measures pacemaker lead capacitance during battery replacement. Increased capacitance indicates fluid penetration, potentially caused by insulation defects or material degeneration, necessitating lead evaluation.

    Area of Science:

    • Biomedical Engineering
    • Medical Device Technology
    • Implantable Devices

    Background:

    • Chronic implantation of pacemaker leads can lead to insulation defects.
    • Fluid penetration into pacemaker leads can cause electrochemical reactions.
    • Assessing lead integrity is crucial for patient safety and device longevity.

    Purpose of the Study:

    • To introduce a novel device for measuring pacemaker lead capacitance.
    • To correlate capacitance changes with lead integrity issues.
    • To establish capacitance measurement as a tool for evaluating chronically implanted leads.

    Main Methods:

    • Development of a device to measure pacemaker lead capacitance during battery replacement.
    • Comparison of calculated capacitance values with measured values for a conductor system.

    Related Experiment Videos

  • Monitoring capacitance in chronically implanted pacemaker leads.

    • Main Results:

    • A significant increase in capacitance indicates substantial body fluid penetration into the lead.
    • Identified potential causes for fluid penetration: insulation defects (sutures, guide wires) or material degeneration.
    • Measured capacitance values closely align with calculated values for a defined system.

    Conclusions:

    • Pacemaker lead capacitance measurement is a valuable tool for evaluating chronically implanted leads.
    • This method can help detect insulation defects and material degradation.
    • The technique is also applicable for quality control of pacemaker leads during manufacturing.