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Health and safety information
9. What about wireless phone interference
with medical equipment?
Radio frequency 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 compatible 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.
10.What are the results of the research
done already?
The research done thus far has produced
conflicting results, and many studies have
suffered from flaws in their research
methods. Animal experiments investigating
the effects of radio frequency energy (RF)
exposures characteristic of wireless phones
have yielded conflicting results that often
cannot be repeated in other laboratories. A
few animal studies, however, have
suggested that low levels of RF could
accelerate the development of cancer in
laboratory animals. However, many of the
studies that showed increased tumor
development used animals that had been