Comparative Physiological study for Audiometry between Normal and Industrial Employee

Dr. Brijesh Baranda; Dr. Ashok Goswami

Volume : VI, Issue : I, January - 2017

Comparative Physiological study for Audiometry between Normal and Industrial Employee

Dr. Brijesh Baranda, Dr. Ashok Goswami

Abstract :

Continuous exposure to noise of high frequency causes Noise-Induced he� Loss (NIHL) at 4KHz. We should focus on employee�s use of he� protection devices (HPDs) rather than on controlling the noise exposure at its source. The objectives were to assess and comparison of he� threshold in normal healthy subjects and industrial employees and also to find out prevalence of he� loss and relationship between he� loss and age group. Total 50 healthy subjects and 50 industrial employees of Dhaal enterprise ltd, Ahmedabad underwent a pure tone pure tone audiometry. He� threshold for air conduction and bone conduction in both ear at each frequency was higher in Industrial employee as compared to normal subjects. There were 20 industrial employees (40%) suffering from 4 kHz notch in right ear and 4 (8%).It was observed that the proportion of he� impairment (mild, moderate, moderately severe and severe) in both ear increased as age increased. Mild deafness in right ear was prevalent among 13 employees(26%) and in left ear 16 employees (32%), moderate deafness in right ear prevalent among 5 employees(10%) and in left ear 4 employees (8%), moderately severe deafness prevalent among 6 employees(12%) in both ear and severe deafness prevalent among 2 employees (4%) in right ear and 1 employee (2%) left ear. In more than 60 year older industrial employees moderate he� loss (41 to 55 db) was observed at 1000Hz, 2000 Hz, 4000 Hz and moderately severe h� loss (56 to 70 db) at 8000 Hz in right ear. In left ear of more than 60 year older industrial employees moderate he� loss (41 to 55 db) was observed at 2000 Hz, 4000 Hz and 8000 Hz.