Muhammad Jamalullah, Anjum Ilahi, Sher Muhammad Malik, Mansure, Orooj H.
Occupational noise induced heraing loss.
Isra Med J Jan ;6(4):301-4.

OBJECTIVE: To investigate hearing threshold of industrial workers and correlate between noise exposed and unexposed groups. STUDY DESIGN: An observational cross sectional study PLACE AND DURATION OF STUDY: Study was conducted at medical testing and research organization located at Islamabad from January 2010 to May 2010. METHODOLOGY: 50 industrial workers (Gp A) exposed to constant high level noise were integrated in study and compared with matched control group (Gp B). Pure tone audiometry (subjective test) was carried out to measure the hearing threshold at various frequencies. RESULTS: Hearing loss was more prevalent in group A. A characteristic dip of hearing threshold was noted at 4000 Hz in Gp A. CONCLUSION: Industrial workers are at higher risk of developing Sensor-neural hearing loss (SNHL) as compared to general population. These individuals can easily be picked in early stages by audiometry and appropriate protective measures advised to prevent or interrupt the silent progress of disease.

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