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Pacemaker failure associated with therapeutic radiation.

C Brooks1, M Mutter

  • 1University of Tennessee Medical Center, Knoxville.

The American Journal of Emergency Medicine
|November 1, 1988
PubMed
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Radiotherapy can cause pacemaker failure. A patient receiving radiation for lung cancer experienced pacemaker malfunction, which was resolved by magnet application, indicating a likely complication of the treatment.

Area of Science:

  • Oncology
  • Cardiology
  • Medical Physics

Background:

  • A 48-year-old male patient with inoperable lung cancer underwent cobalt-60 radiotherapy.
  • The patient had a multiprogrammable Intramedics 259-01 pacemaker implanted.

Observation:

  • Several weeks post-radiotherapy, the patient presented with chest and abdominal pain, shortness of breath, hypotension, and tachycardia.
  • A paced tachycardia was observed, and magnet application over the pacemaker temporarily inhibited its function.

Findings:

  • Magnet application restored normal sinus rhythm and alleviated the patient's symptoms.
  • The pacemaker malfunction was likely a complication secondary to radiotherapy.

Implications:

  • Radiotherapy may pose a risk of pacemaker malfunction in patients with implanted devices.

Related Experiment Videos

  • This case highlights the importance of monitoring cardiac device function in cancer patients undergoing radiation therapy.
  • Further investigation into the mechanisms of radiotherapy-induced pacemaker interference is warranted.