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Effects of Bluetooth device electromagnetic field on hearing: pilot study
R Balachandran1, N Prepageran, N Prepagaran
1Department of Otorhinolaryngology, University of Malaya, Kuala Lumpur, Malaysia. b_rekha@yahoo.com
Background:
The Bluetooth wireless headset has been promoted as a 'hands-free' device with a low emission of electromagnetic radiation.
Objective:
To evaluate potential changes in hearing function as a consequence of using Bluetooth devices, by assessing changes in pure tone audiography and distortion production otoacoustic emissions.
Design:
Prospective study.
Materials And Methods:
Thirty adult volunteers were exposed to a Bluetooth headset device (1) on 'standby' setting for 6 hours and (2) at full power for 10 minutes. Post-exposure hearing was evaluated using pure tone audiography and distortion production otoacoustic emission testing.
Results:
There were no statistically significant changes in hearing, as measured above, following either exposure type.
Conclusion:
Exposure to the electromagnetic field emitted by a Bluetooth headset, as described above, did not decrease hearing thresholds or alter distortion product otoacoustic emissions.
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