title: The efficiency of otoacoustic emissions and pure-tone audiometry in the detection of temporary auditory changes after exposure to high sound pressure levels.
abstract: Exposure to noise has a harmful effect on the auditory health of workers.
  
  
  OBJECTIVE
  The main goal of this paper was to establish the role of pure-tone audiometry and evoked transient otoacoustic emissions in the detection of small temporary auditory changes after exposure to high sound pressure levels.
  
  
  METHODS
  A cross-sectional cohort study.
  
  
  METHODS
  30 otologically normal subjects aged between 20 and 35 years were submitted to pure-tone audiometry and evoked transiente otoacoustic emissions before and after 5 hours of exposure to high sound pressure levels (between 80 and 90 dB).
  
  
  RESULTS
  For pure-tone audiometry the largest changes occurred at high frequencies--from 3 KHz to 8 KHz after exposure. The evoked transient otoacoustic emissions showed reduced reproductibility from 1 KHz to 4 KHz after exposure to noise.
  
  
  CONCLUSIONS
  We noted that both pure-tone audiometry and evoked transient otoacoustic emissions had a role in detecting statistically significant changes in the auditory threshold and in reproductibility, after exposure to high sound pressure levels.
authors: Universidade Veiga de Almeida.
authors: Samanta Marissane da Silva
authors: SM
authors: Barros
authors: Silvana
authors: S
authors: Frota
authors: Ciríaco Cristovão Tavares
authors: CC
authors: Atherino
authors: Francisco
authors: F
authors: Osterne
mesh_terms: D000328:Adult; D001301:Audiometry, Pure-Tone; D001305:Auditory Fatigue; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D006801:Humans; D008297:Male; D009622:Noise; D017084:Otoacoustic Emissions, Spontaneous / Q000502:physiology*; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity