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Related Experiment Videos

Epicardial ventricular pacemaker electrode longevity in children.

G A Serwer1, J M Mericle, B E Armstrong

  • 1Department of Pediatrics, Duke University Medical Center, Durham, North Carolina.

The American Journal of Cardiology
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

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Epicardial ventricular pacing electrodes in children have an unknown lifespan. Survival rates are 88% at 6 months, decreasing to 49% by 101 months, with most failures occurring early.

Area of Science:

  • Pediatric Cardiology
  • Biomedical Engineering
  • Implantable Devices

Background:

  • Epicardial electrodes are standard for pediatric ventricular pacing.
  • The long-term performance and longevity of these electrodes are not well-established.

Purpose of the Study:

  • To evaluate the longevity of epicardially implanted ventricular pacing electrodes in a pediatric population.
  • To identify factors influencing electrode survival and failure modes.

Main Methods:

  • Retrospective analysis of 126 epicardial ventricular pacing electrodes implanted between 1970 and 1985 in 81 children.
  • Actuarial life table analysis was used to determine electrode survival rates over time.
  • Electrode failures were categorized by mode, including high pacing threshold and sensing issues.

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Main Results:

  • Electrode failure occurred in 38 of 126 electrodes, with a median time to failure of 37 months.
  • Actuarial survival rates were 88% ± 3% at 6 months and 75% ± 5% at 53 months.
  • A significant decrease in survival was observed after 53 months, reaching 49% ± 7% by 101 months.

Conclusions:

  • Epicardial ventricular pacing electrodes in children demonstrate a significant failure rate over time, particularly after 53 months.
  • Early electrode survival (to 6 months) is a strong predictor of longer-term function.
  • Understanding these longevity patterns is crucial for managing pediatric patients requiring long-term pacing.