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11. What about wireless phone interference with medical equipment?
Radiofrequency energy (RF) from wireless phones can interact with some electronic devices. For
this reason, FDA helped develop a detailed test method to measure electromagnetic interference
(EMI) of implanted cardiac pacemakers and defibrillators from wireless telephones. This test
method is now part of a standard sponsored by the Association for the Advancement of Medical
instrumentation (AAMI). The final draft, a joint effort by FDA, medical device manufacturers,
and many other groups, was completed in late 2000. This standard will allow manufacturers to
ensure that cardiac pacemakers and defibrillators are safe from wireless phone EMI. FDA has
tested hearing aids for interference from handheld wireless phones and helped develop a voluntary
standard sponsored by the Institute of Electrical and Electronic Engineers (IEEE). This standard
specifies test methods and performance requirements for hearing aids and wireless phones so
that no interference occurs when a person uses a compatible phone and a accompanied hearing
aid at the same time. This standard was approved by the IEEE in 2000.
FDA continues to monitor the use of wireless phones for possible interactions with other
medical devices. Should harmful interference be found to occur, FDA will conduct testing to
assess the interference and work to resolve the problem.
12. Where can I find additional information?
For additional information, please refer to the following resources:
• FDA web page on wireless phones
http://www.fda.gov/cdrh/phones/index.html
• Federal Communications Commission (FCC) RF Safety Program
http://www.fcc.gov/oet/rfsafety
• International Commission on Non-Ionizing Radiation Protection
http://www.icnirp.de
• World Health Organization (WHO) International EMF Project
http://www.who.int/emf
• National Radiological Protection Board (UK)
http://www.nrpb.org.uk/
July 18, 2001For updates: http://www.fda.gov/cdrh/phones
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