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Pacemaker function during radiofrequency ablation

D Pfeiffer1, J Tebbenjohanns, B Schumacher

  • 1Department of Cardiology, University of Bonn, Germany.

Pacing and Clinical Electrophysiology : PACE
|May 1, 1995
PubMed
Summary
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Radiofrequency ablation can disrupt pacemaker function, causing sensing and pacing failures. Pacemaker deactivation and external pacing are recommended during procedures to prevent complications.

Area of Science:

  • Electrophysiology
  • Cardiovascular Devices

Background:

  • Radiofrequency current ablation procedures are increasing.
  • Pacemakers are implanted in patients undergoing ablation for rhythm management.

Purpose of the Study:

  • To report pacemaker behavior during radiofrequency ablation.
  • To identify potential complications and recommend preventative measures.

Main Methods:

  • Observational study of 25 patients with pacemakers undergoing radiofrequency ablation.
  • Analysis of pacemaker behavior, including sensing and pacing functions.
  • Review of 13 different pacemaker devices, primarily with unipolar electrodes.

Main Results:

  • Sensing failures occurred in 32.0% of patients.

Related Experiment Videos

  • Pacing failures were observed in 16.0% of patients.
  • Prolonged pauses and induced tachyarrhythmias were noted; no device damage was observed.

    • Conclusions:

    • Pacemaker behavior during radiofrequency ablation is variable and can lead to significant dysfunction.
    • Deactivating implanted generators and using external bipolar pacing electrodes are recommended.
    • Pacemaker manufacturers should enhance device protection against 500 kHz radiofrequency current.