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Related Experiment Videos

Transvenous pacemaker insertion with a zero dislodgement rate.

D Morse, M Yankaskas, B Johnson

    Pacing and Clinical Electrophysiology : PACE
    |March 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

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    This study evaluated a non-retractable transvenous screw-in pacemaker lead in 64 patients. While offering stable placement and low thresholds, one complication led to its removal, suggesting potential improvements with newer retractable leads.

    Area of Science:

    • Cardiology
    • Biomedical Engineering

    Background:

    • Transvenous pacemaker leads are crucial for cardiac rhythm management.
    • Achieving stable lead placement and low stimulation thresholds is essential for effective pacing.

    Purpose of the Study:

    • To evaluate the performance and safety of a non-retractable transvenous screw-in pacemaker lead.
    • To assess acute and chronic stimulation thresholds and lead stability.

    Main Methods:

    • A non-retractable screw-in transvenous lead was implanted in 64 patients between April 1979 and June 1981.
    • Stimulation thresholds (voltage and current) were measured at implant and at 3 months.
    • Lead stability and any complications were monitored.

    Main Results:

    Related Experiment Videos

  • The lead demonstrated low acute (0.7V) and chronic stimulation thresholds (0.86mA at standard pulse width).
  • Chronic thresholds at 3 months were generally below the pacemaker's lower programmable limit.
  • One patient experienced lead knotting in the superior vena cava due to the exposed screw, requiring thoracotomy for removal.

    • Conclusions:

    • The non-retractable screw-in lead provided stable placement and favorable stimulation thresholds.
    • A rare complication associated with the exposed screw position highlights potential risks.
    • Further development, particularly with retractable leads, may enhance the overall acceptability of this pacing lead principle.