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Related Experiment Videos

The nuclear pacemaker: is renewed interest warranted?

V Parsonnet1, A D Berstein, G Y Perry

  • 1Newark Beth Israel Medical Center, New Jersey 07112.

The American Journal of Cardiology
|October 1, 1990
PubMed
Summary
This summary is machine-generated.

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Radioisotope-powered pacemakers demonstrated excellent longevity and safety, with 99% power source survival at 15 years. Despite higher initial costs, their reliability and reduced reoperation rates suggest suitability for modern implantable devices.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Nuclear Medicine

Background:

  • Radioisotope thermoelectric generators (RTGs) have been utilized as power sources for pacemakers.
  • Previous studies indicated potential benefits of nuclear pacemakers regarding longevity.

Purpose of the Study:

  • To evaluate the long-term safety and reliability of radioisotope-powered pacemakers.
  • To compare the performance of fixed-rate (VOO) versus demand (VVI) nuclear pacemakers.

Main Methods:

  • A retrospective analysis of 155 nuclear pacemakers implanted between 1973 and 1987.
  • Comparison of VOO and VVI pacemaker performance, including longevity, reoperation rates, and system survival.
  • Assessment of power source failures, reasons for pacemaker removal, and malignancy incidence.

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Main Results:

  • Actuarial survival at 15 years was 99% for power sources and 82% for entire pacing systems.
  • VOO pacemakers required more reoperations than VVI, primarily for mode change.
  • Power source failure was rare (1 case); common removal reasons included component malfunction and lead issues.

Conclusions:

  • Nuclear pacemakers are safe and reliable, with power sources exhibiting exceptional longevity.
  • The extended lifespan and reduced reoperation frequency of nuclear pacemakers justify their use.
  • Long-lasting nuclear power sources are recommended for contemporary pacemakers and implantable rhythm-management devices.