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Related Experiment Videos

Potential for Personal Digital Assistant interference with implantable cardiac devices.

Jeffrey L Tri1, Jane M Trusty, David L Hayes

  • 1Division of Foundation Telecommunications and Network Services, Mayo Clinic College of Medicine, Rochester, Minn 55905, USA.

Mayo Clinic Proceedings
|December 15, 2004
PubMed
Summary

Wireless local area network (WLAN) technology, specifically Personal Digital Assistants (PDAs), did not interfere with implantable cardiac pacemakers or defibrillators in vitro. Further in vivo testing is recommended to confirm these findings for patient safety.

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Area of Science:

  • Biomedical Engineering
  • Electromagnetics
  • Cardiology

Background:

  • Implantable cardiac devices like pacemakers and defibrillators are crucial for managing cardiac arrhythmias.
  • The increasing prevalence of wireless technologies raises concerns about potential electromagnetic interference (EMI) with these vital medical implants.
  • Understanding the interaction between wireless local area network (WLAN) devices and cardiac implantable electronic devices (CIEDs) is essential for patient safety.

Purpose of the Study:

  • To evaluate the potential for electromagnetic interference between wireless local area network (WLAN) technology, specifically Personal Digital Assistants (PDAs), and implantable cardiac pacemakers and defibrillators.
  • To assess the safety of using PDA-based WLAN devices in close proximity to CIEDs.

Main Methods:

Related Experiment Videos

  • In vitro testing of various pacemakers and defibrillators was conducted at the Mayo Clinic.
  • Cardiac devices were exposed to an HP Compaq IPAQ PDA equipped with a Cisco Aironet WLAN card at maximum power.
  • Testing ensured consistent energy output from the WLAN card to rule out orientation-related interference.

    • Main Results:

    • All tested pacemakers and defibrillators demonstrated normal pacing and sensing functions without EMI.
    • One implantable cardioverter-defibrillator (ICD) exhibited an aberration, identified as 'noise' by the device itself.
    • This isolated aberration was attributed to the experimental setup, not the PDA's WLAN output.

    Conclusions:

    • In vitro testing revealed no clinically significant electromagnetic interference from WLAN technology with pacemakers and ICDs.
    • While initial results are reassuring, in vivo studies are recommended to definitively confirm the absence of clinically relevant interactions.
    • The findings suggest that current WLAN technology, as represented by the tested PDA, is unlikely to pose a significant EMI risk to CIEDs.