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Related Experiment Videos

Long-term threshold stability with porous tip electrodes.

L Gould, C Patel, W Becker

    Pacing and Clinical Electrophysiology : PACE
    |November 1, 1986
    PubMed
    Summary
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    This study on unipolar tined porous endocardial electrodes found low chronic stimulation thresholds. Reprogramming pulse generators to lower pulse widths significantly extended device longevity and improved cost-effectiveness.

    Area of Science:

    • Cardiology
    • Biomedical Engineering
    • Medical Devices

    Background:

    • Endocardial electrodes are crucial for cardiac pacing.
    • Optimizing stimulation thresholds and pulse generator longevity is a key clinical challenge.

    Purpose of the Study:

    • To evaluate the performance and long-term outcomes of unipolar tined porous endocardial electrodes.
    • To assess the impact of reduced pulse width and voltage amplitude on pulse generator longevity and cost-effectiveness.

    Main Methods:

    • A series of 163 patients received unipolar tined porous endocardial electrodes.
    • Stimulation thresholds were measured at various time points post-implantation (24 hours, 6 months, 1 year).
    • Pulse generator parameters (pulse width, voltage amplitude) were adjusted to optimize performance and longevity.

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    Main Results:

    • Low chronic stimulation thresholds were observed in all patients.
    • Mean pulse width thresholds remained stable at 6 months and 1 year post-implantation.
    • Reprogramming to lower pulse widths and voltage amplitudes (5.0V to 2.5V in 16 patients) significantly prolonged pulse generator life.
    • No complications were reported, except for one instance requiring electrode repositioning due to exit block.

    Conclusions:

    • Unipolar tined porous endocardial electrodes demonstrate favorable chronic stimulation thresholds.
    • Reducing pulse width and voltage amplitude are effective strategies to enhance pulse generator longevity and cost-effectiveness.
    • These findings support the use of optimized pacing parameters for improved patient outcomes and resource utilization.