title: The acute auditory effects of exposure for 60 minutes to mobile`s electromagnetic field.
abstract: OBJECTIVE
  To assess the immediate consequences of 60 minutes exposure to mobile phones on hearing function by determining changes in distortion product otoacoustic emission (DPOAE) and hearing threshold levels (HTLs).
  
  
  METHODS
  This prospective control clinical trial study was carried out at the Ear, Nose and Throat Department, King Abdulaziz University Hospital, Riyadh, Kingdom of Saudi Arabia from July 2009 to July 2011. The data collected included age, symptoms experienced after exposure, and HTLs and DPOAE were recorded before, and immediately after 60 minutes of exposure to the same model of mobile phone.
  
  
  RESULTS
  Heat/pain was the most commonly reported symptom. In the test-ears, significant shift (p<0.05) was noticed in HTLs at 1000 and 2000 Hz but not at other frequencies, while non test-ears did not reveal significant shift in HTLs. Additionally, test-ears revealed significant differences (p<0.05) in DPOAE at 1000 Hz, 1400 Hz, 2000 Hz, and at the average of all frequencies, while non test-ears did not show significant differences.
  
  
  CONCLUSIONS
  Sixty minutes of close exposure to electromagnetic fields emitted by a mobile phone had an immediate effect on HTL assessed by pure-tone audiogram and inner ear (assessed by DPOAE) in young human subjects. It also caused a number of other otologic symptoms.
authors: Department of Otolaryngology, Head and Neck Surgery, King Saud University, Riyadh, Kingdom of Saudi Arabia. sanosi@hotmail.com
authors: Abdulrahman A
authors: AA
authors: Alsanosi
authors: Murad O
authors: MO
authors: Al-Momani
authors: Abdulrahman A
authors: AA
authors: Hagr
authors: Fidaa M
authors: FM
authors: Almomani
authors: Ibraheem M
authors: IM
authors: Shami
authors: Salman F
authors: SF
authors: Al-Habeeb
mesh_terms: D000293:Adolescent; D000328:Adult; D040421:Cell Phone; D004574:Electromagnetic Fields / Q000009:adverse effects*; D005260:Female; D006309:Hearing; D006801:Humans; D008297:Male; D012529:Saudi Arabia; D055815:Young Adult