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Related Experiment Videos

Therapeutic irradiation over a permanent cardiac pacemaker.

R J Teskey1, I Whelan, Y Akyurekli

  • 1University of Ottawa Heart Institute, Ontario, Canada.

Pacing and Clinical Electrophysiology : PACE
|February 1, 1991
PubMed
Summary

Radiation therapy poses challenges for patients with cardiac pacemakers. A novel approach involved irradiating a pacemaker using a temporary external device, preserving its function post-treatment.

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Area of Science:

  • Radiation Oncology
  • Cardiology
  • Biomedical Engineering

Background:

  • Therapeutic irradiation of cancer can inadvertently include implanted cardiac pacemakers, posing risks to device function.
  • Managing patients with pacemakers requiring radiation therapy necessitates careful planning to avoid device malfunction.

Observation:

  • A case involving a proposed radiation field encompassing subclavian pacemaker pockets was presented.
  • An alternative strategy was employed, irradiating the Cordis model 334A implantable pulse generator using a temporary external pacemaker.

Findings:

  • The implantable pulse generator received a total dose of 60 Gy in 30 fractions.
  • Backup temporary pacing and continuous ECG monitoring were utilized during the initial fractions.
  • Post-irradiation evaluation, including transtelephonic monitoring over 4 months, confirmed normal pacemaker function without changes in pacing or sensing.

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Implications:

  • This technique offers a viable alternative for irradiating pacemakers, especially non-multiprogrammable devices with radiation-resistant technology.
  • It provides a method to ensure continued cardiac pacing support during oncological treatment.
  • This approach highlights the importance of interdisciplinary collaboration between radiation oncologists and pacemaker physicians.