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Related Experiment Videos

The nonextractable tined endocardial pacemaker lead.

H Shennib1, R C Chiu, M Rosengarten

  • 1Department of Cardiovascular and Thoracic Surgery, Montreal General Hospital, McGill University, Quebec.

The Canadian Journal of Cardiology
|September 1, 1989
PubMed
Summary
This summary is machine-generated.

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Tined pacemaker electrodes, while improving fixation, present extraction challenges. Removal is significantly more difficult after one month post-implantation, with a 54.5% failure rate in this group.

Area of Science:

  • Cardiology
  • Medical Devices
  • Electrophysiology

Background:

  • Tined pacemaker electrodes enhance endocardial fixation.
  • Increasing difficulty and complications arise during extraction of these tined leads.
  • This study reviews institutional experience with tined electrode extraction.

Purpose of the Study:

  • To evaluate the success rates of tined pacemaker lead repositioning and removal.
  • To identify factors influencing the difficulty of tined lead extraction.
  • To assess complications associated with retained tined leads.

Main Methods:

  • Retrospective review of pacemaker implantations and reoperations from January 1975 to January 1985.
  • Analysis of 28 attempts at repositioning or removing tined electrodes.

Related Experiment Videos

  • Follow-up of retained leads, including assessment of infection and migration.

    • Main Results:

    • 43% (12 of 28) of tined lead removal/repositioning attempts failed.
    • Failure rate was 54.5% (12 of 22) when extraction was attempted more than one month post-implantation.
    • All 6 attempts within one month were successful; no leads were retained in the final year of the study.
    • Retained leads did not necessitate thoracotomy; infection was managed, and one lead migrated without symptoms.

    Conclusions:

    • Extraction difficulty of tined pacemaker leads increases significantly with time post-implantation.
    • Early intervention is crucial for successful tined lead removal.
    • While challenging, retained tined leads may be managed conservatively without thoracotomy in many cases.