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 ORIGINAL ARTICLE
Year : 2019  |  Volume : 21  |  Issue : 101  |  Page : 164--168

Distortion product oto-acoustic emission: a superior tool for hearing assessment than pure tone audiometry


Occupational Health Division, Defence Institute of Physiology & Allied Sciences (DIPAS), Ministry of Defence, DRDO, Timarpur, Delhi, India

Correspondence Address:
Neeru Kapoor
Occupational Health Division, Defence Institute of Physiology & Allied Sciences (DIPAS), Ministry of Defence, DRDO, Lucknow Road, Timarpur, Delhi 110 054
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/nah.NAH_37_19

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Objective: Hearing plays a crucial role in the performance of a soldier and is important for communication and speech processing. Service personnel are constantly exposed to high levels of noise and hence predisposed to occupational health disabilities, principally noise-induced hearing loss (NIHL) and tinnitus. NIHL is a significantly common impairment in the military and can affect the warfare performances. Parochial awareness about the effects of uproarious noise which exacerbates their hearing, acceptance rate of use of hearing protection devices and follow-up audiological tests have become the major drawback for prevention of NIHL and are less pondered upon. Method: The present study focuses on the effects of noise on the hearing of service crew operating and maintaining military equipment and explores the efficacy of DPOAE’s to substitute pure tone audiometry as a quick, easy to operate and implementable test technique for monitoring of hearing status. Results: The results suggest that DPOAE test is important and more coherent than audiometry alone for the early detection of cochlear injury due to noise from military operations and efficacious for detecting NIHL.






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