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ORIGINAL ARTICLE
Year : 2014  |  Volume : 20  |  Issue : 3  |  Page : 115-118

Prevalence of occupational noise induced hearing loss in industrial workers


1 Department of Otorhinolaryngology, Bharat ENT and Endoscopy Hospital, Bhiwani, India
2 Department of Otorhinolaryngology, Pt. BD Sharma Medical University, Rohtak, Haryana, India
3 Department of Audiology and Speech Language Pathology, Bharat ENT and Endoscopy Hospital, Bhiwani, India
4 Department of Audiology and Speech Language Pathology, E.S.I. Hospital, Bhiwani, India

Correspondence Address:
Rupender K Ranga
Bharat ENT and Endoscopy Hospital, Rohtak Gate, Bhiwani - 127 021, Haryana
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-7749.136848

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Introduction: Occupational noise induced hearing loss causes sensorineural hearing loss (SNHL) in industrial workers who are continuously exposed to high frequency noise due to degeneration in hair cells and associated nerve fibers. Materials and Methods: This study was conducted in 100 industrial male workers, including officials, machinery operators, and helpers. ENT and audiometry examination were done and noise level was measured. The age, noise level, duration of exposure, type of activity, and measurement of hearing loss were co-related. Results: The workers who worked in machinery area were affected more when compared to official and helpers. The age group 36-40 was affected more when compared to other age groups. Conclusions: Chronic exposure to noise is common hazard in industrial workers that affect bilateral cochlea and causes high frequency SNHL with 4 kHz notch. We observed 39% industrial workers who were exposed to noise level >87.3 dBA, for 8-12 h/day in textile and hard strip rolling mills in spite of noise free machine are recommended suffered from SNHL.


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