[Analysis of hearing threshold shift measured by otoacoustic emissions in soldiers after shooting with use hearing protectors].

Background: The aim of the study was to assess the influence of short-term impulse noise on the size of temporary threshold shift in soldiers using hearing protectors during exposure.

Material And Methods: The study covered 80 subjects with normal tympanic membrane and thresholds measured by pure tone audiometry lower than 20 dB. There were two groups: I--composed of 40 soldiers protected during shooting and II--comprised 40 young males which did not shoot (controls).