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Related Experiment Videos

Interference by cellular phones with permanent implanted pacemakers: an update.

K Hekmat1, B Salemink, G Lauterbach

  • 1Department of Cardiothoracic Surgery, University of Cologne, 50924 Cologne, Germany. khosro.hekmat@medizin.uni-koeln.de

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|June 3, 2004
PubMed
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Pacemakers with feedthru filters generally do not interfere with digital cellular phones. Interference was only seen at very low ventricular sensitivity settings, suggesting proper programming prevents issues.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Electrophysiology

Background:

  • Pacemakers are critical for cardiac rhythm management.
  • Digital cellular phones utilize radiofrequency signals that could potentially interfere with electronic devices.
  • Feedthru filters are incorporated in pacemakers to mitigate electromagnetic interference.

Purpose of the Study:

  • To evaluate potential electromagnetic interference between digital cellular telephones and pacemakers equipped with feedthru filters.
  • To determine if cellular phone usage poses a risk to pacemaker function.

Main Methods:

  • Tested 100 patients undergoing initial pacemaker implantation (January 2001-May 2003).
  • Utilized a GSM-standard cellular phone in various modes (standby, dialing, operating) against 100 pacemakers (23 single-chamber, 77 dual-chamber).

Related Experiment Videos

  • Recorded continuous electrocardiograms, intracardiac electrograms, and marker channels during simulated cellular calls.

    • Main Results:

    • Pacing inhibition occurred in 2 patients when the cellular phone was placed directly over the pacemaker pocket.
    • Interference was observed at ventricular sensitivity settings below 0.50 mV.
    • Adjusting sensitivity to 0.50 mV or higher eliminated interference in one case, and 1.0 mV in another.

    Conclusions:

    • Pacemakers with feedthru filters are generally safe for use with digital cellular phones when programmed correctly.
    • The risk of interference is minimal and primarily associated with extremely low ventricular sensitivity settings.
    • Recommends permanent programming of ventricular sensitivity at 2.0 mV or higher to ensure optimal safety and prevent interference.