Noise Induced Hearing Loss among Factory Workers of Dharan Industrial Area

2019 ◽  
Vol 2 (2) ◽  
pp. 34-39
Author(s):  
D Paudel ◽  
S Bhandary ◽  
A Pokharel ◽  
ST Chettri ◽  
SP Shah ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Pure Tone Audiometry ◽  
Industrial Area ◽  
Sensory Loss ◽  
Noise Induced Hearing Loss ◽  
Loud Noise ◽  
Factory Workers ◽  
Cross Sectional ◽  
Exposed Population ◽  
The Difference

Background: Hearing loss is the most common sensory loss accounting for 250 million population of world out of which 16% is attributed from occupational exposure to loud noise, ranging from 7% to 21% in different parts of the world. The prevalence of noise induced hearing loss is more common among factory workers than general population. There are limited reports regarding occupational noise from developing country like Nepal. Method: A cross sectional study was done in Dharan Industrial Area between February 2014 to May 2014. Twenty different industries operating inside the premises of industrial area were categorized into four major categories as per the nature and types, such as: Metal, Plastic, Food and Chemical based industries. Measurement of the sound was done in two phases. Pure tone audiometry of the exposed and non-exposed population was done. Results: Total 104 workers were included from 20 different factories; out of them 80 workers were exposed to loud noise and 24 were non-exposed who acted as the control. The frequency of hearing loss among exposed population was 38.8% and it was 12.5% among non-exposed and the difference was statistically significant. In exposed population hearing loss was 7.7%, 40.5% and 60.9% in age groups of 15- 30, 31- 45 and > 46 years respectively and the difference was statistically significant. Population working longer duration had more chance of noise induced hearing loss and the difference was significant. Conclusion: Population working in noise producing factory has high risk of developing noise induced hearing loss and the risk increases in older people and in people who works for long duration.

scholarly journals Noise Induced Hearing Loss of Traffic Polices: Study of 30 Cases

2012 ◽  
Vol 19 (Number 2) ◽  
pp. 7-11
Author(s):  
Md. M Rahman ◽  
Md. Daulatuzzaman ◽  
N Khan
Keyword(s):  
Hearing Loss ◽  
Clinical Examination ◽  
Hearing Aids ◽  
Pure Tone Audiometry ◽  
Cross Sectional Study ◽  
Normal Hearing ◽  
Noise Induced Hearing Loss ◽  
Cross Sectional ◽  
Police Service ◽  
Mixed Hearing Loss

A cross sectional study was done in the department of otolaryngology of Central Police Hospital. Rajarbagh, Dhaka., during the period of January 2005 to December 2007 to find out noise induced hearing loss of traffic polices and to raise awareness for early diagnosis and treatment and also preventive measures of noise induced hearing loss. 'Thirty patients who were diagnosed as a case of hearing impairment by detailed history, clinical examination and related investigations were included in the study who were exposed to noise 0-20 years. Common chief complaints of the patients were impairment of hearing (100%), Minims (50%), dizziness (20%), aural discharge (6.66)%. Medical history of 11w patients were diabetes (6.66%) and hypertension (26.66 %). 40 % patients were smoker and 60 % patients were non smoker. A ssoc jar ed other disease like chronic supporative otitis media (CSOM) t vas present in 13.33 %. Pure tone audiometry revealed normal hearing 3.3 %, conductive hearing loss 10 %, sensorineural hearing loss 73.33 %, mixed hearing loss 13.33 % and normal hearing 6.66 %, mild hearing loss 50 To, moderate type of hearing loss 36.66 % and moderately severe 3.33 %, severe hearing loss were 3.33 %. Treatment of the patients were given by vitamin 13,, Lli, B6, cochlear vasodilators such as vinpocetine and hearing aids. Patients were advised to Hume to other department of police service. those traffic police persons are vulnerable of noise induced hearing loss determined by patients complain, clinical examination and investigations like PTA, were advised to be changed to other department of police service.

scholarly journals Noise Induced Hearing Loss among Aircrews of Bangladesh Air Force

2021 ◽  
Vol 16 (1) ◽  
pp. 12-15
Author(s):  
Iftekharul Islam ◽  
Md Abdullah Al Jobair ◽  
Mohammad Ahmed Ahsan ◽  
Mushtaq Ahmad ◽  
Mohammad Delwar Hossain ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Air Force ◽  
Pure Tone ◽  
Prolonged Exposure ◽  
Age Groups ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
Noise Induced Hearing Loss ◽  
Cross Sectional ◽  
Military Pilots

Introduction: Noise-induced hearing loss is a significant, often unrecognized health problem among the military pilots. Advanced aircraft are powerful and more efficient but generate high noise causing noise-induced hearing loss (NIHL) among military pilots. Aim: To determine the prevalence of noise-induced hearing loss among pilots of the Bangladesh Air Force (BAF) and its association with aircraft type and flying hours. Methods: This cross-sectional study was carried out at Central Medical Board (CMB), Bangladesh Air Force (BAF) Dhaka from April 2017 to March 2018. The audiometry was done in the ENT department of CMB, BAF. Pure-tone audiometry was used to measure hearing thresholds and following pure tone frequencies were used for the test: 0.25, 0.5, 1, 2, 3, 4, 6 and 8 kHz. The association between flight hours and the development of noise-induced hearing loss was analyzed in the different age groups. Results: The study revealed NIHL in the aircrew was 16.5% with a higher prevalence among the helicopter pilots (18.6%) as compared with fighter (16.7%) and transport (11.5%) pilots. The left ear was affected in most of the cases than the right ear. Pilots of more than 40 years old and ≥1500 flying hours had a significantly higher hearing threshold compared with other categories. Conclusion: Exposure to noise in aircrew is unavoidable. By avoiding prolonged exposure to loud noise environments and utilization of personal hearing safety devices can prevent noise-induced hearing loss. JAFMC Bangladesh. Vol 15, No 1 (June) 2020: 12-15

scholarly journals Occupational noise induced hearing loss among local industrial population in Kashmir: a lifestyle study

2018 ◽  
Vol 4 (4) ◽  
pp. 1023
Author(s):  
Imran Sheikh ◽  
Ihsan Ali ◽  
Owais Makhdoomi ◽  
Rabbanie Tariq Wani
Keyword(s):  
Hearing Loss ◽  
Observational Study ◽  
Clinical Examination ◽  
Pure Tone Audiometry ◽  
Noise Induced Hearing Loss ◽  
Occupational Noise ◽  
Loud Noise ◽  
Medical College ◽  
Industrial Distribution ◽  
Study Population

<p class="abstract"><strong>Background:</strong> The purpose of this observational study was to evaluate the incidence of occupational noise induced hearing loss (ONIHL) among the local industrial population of Kashmir who are involved in occupations exposed to noise.</p><p class="abstract"><strong>Methods:</strong> This prospective observational study was conducted in the department of ENT&amp;HNS of government medical college Srinagar and SMHS Hospital. Total of 508 patients were screened and 158 patients were found have ONIHL patients were included in this study. The study population was evaluated for any significant history and were subjected thorough ENT assessment which included history, clinical examination, Otoscopic examination and then a pure tone audiometry. All these patients were further evaluated with a questionnaire in addition to clinical examination.  </p><p class="abstract"><strong>Results:</strong> Around 31% (158) participants were found to have occupational noise induced hearing loss. The highest incidence of hearing loss was found in 50-59 years age group, which was 0.61. The industrial distribution of occupational noise induced hearing loss (ONIHL) in the screened population in the community was found maximum among Bandsaws workers with ONIHL, contributing 30.37% to the total. ONIHL was found to be most common (64.28%) in individuals exposed to loud noise for maximum duration of time (&gt;20 yrs), while it was least common (20.34%) in individuals exposed to loud noise for least duration of time (&lt;5 yrs).</p><strong>Conclusions:</strong> Our study concluded that people who are exposed to noise more than 90db for more than 8 hours day working in local industries of Kashmir have high frequency sensorineural hearing loss.

scholarly journals Noise Induced Hearing Loss in Ground Handling Workers at Juanda Airport Surabaya

2020 ◽  
Vol 63 (2) ◽  
pp. 59-63
Author(s):  
Citra Dwi Novastuti ◽  
Nyilo Purnami ◽  
Nugraenny Affianti
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Noise Induced Hearing Loss ◽  
Distortion Product Otoacoustic Emission ◽  
Research Subjects ◽  
Cross Sectional ◽  
Female Ratio ◽  
Distortion Product ◽  
Ground Handling

Background and Objectives The airport ground handling workers are most vulnerable to noise exposure from the sound of aircraft engines that are quite loud and, if exposed continuously, they may experience hearing loss. This study describes the profile of noise induced hearing loss in ground handling workers at Juanda Airport Surabaya.Subjects and Method The descriptive cross sectional approach is employed, and the noise level in the work environment is measured by airport apron, physical ear examination, distortion product otoacoustic emission (DPOAE) and pure tone audiometry, which were conducted for 89 ground handling workers at the airport.Results The age range that experienced hearing loss the most is 50-59 years (19.10%). The male: female ratio of subjects who experienced hearing loss was 50%:53.24%. The highest percentage of subjects with hearing loss was found in the Area II (export-import cargo) with 68%. Workers who experience hearing loss the most have been working for 17-21 years (76%). The ratio of hearing loss between continuous users of ear protectors and occasional or non-users of protectors was 22.47%:30.34%. Of the 89 total research subjects, 47 were found with hearing based on the DPOAE refer results; of these subjects, 30 (33.7%) experienced hearing loss due to noise (NIHL), 9 suffered in the right ear (10.11%), 9 in the left ear (10.11%) and 12 in both ears (13.48%).Conclusion Based on the DPOAE results, 52.81% of the ground handling workers at Juanda airport Surabaya were found with hearing loss; of these workers, 33.7% workers experienced NIHL with 10.11% observed in each ear and 13.48% in both ears.

scholarly journals OCCUPATIONAL NOISE INDUCED HEARING LOSS: IT’S FREQUENCY & RISK FACTORS

2021 ◽  
Vol 71 (Suppl-3) ◽  
pp. S607-11
Author(s):  
Muhammad Javid Iqbal Pattafi ◽  
Nazia Mumtaz ◽  
Ghulam Saqulain
Keyword(s):  
Risk Factors ◽  
Hearing Loss ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Cross Sectional Study ◽  
P Value ◽  
Noise Induced Hearing Loss ◽  
Occupational Noise ◽  
Cross Sectional ◽  
Female Ratio

Objective: To determine the frequency and risk factors of occupational noise induced hearing loss. Study Design: Cross sectional study. Place and Duration of Study: Dispensary Unit of Jaith Bhuta Sugar Mill near Rahim Yar Khan, Southern Punjab.from Aug 2017 to Jan 2018. Methodology: This study was conducted using nonprobability consecutive sampling. n=300 workers of bothgenders aged 18-40 years were assessed. Basic demographic parameters, otoscopic examination and Pure Tone Audiometry were used for data collection. The Data was analyzed by using SPSS version 21. Results: Study included 215 (71.7%) males and 85 (28.3%) females with male to female ratio of 2.53: 1 and meanage of 28.34 ± 4.61 years. The frequency rate of hearing impairment (HI) was 90 (30%) out of 300 respondents inthis study. Out of 70 (100%) of respondents were affected with duration of job of 6-10 years. There was significant association between gender, age, education, duration of noise exposure with occupational noise induced hearing loss with p-value <0.001. Conclusion: There was high frequency of occupational noise induced hearing loss (ONIHL) with significantrisk factors being level and duration of exposure to noise (ETN), age, gender, education and hearing protectivedevices (HPD)’s.

scholarly journals Frequency of Noise Induced Hearing Loss Among Traffic Wardens of Lahore

2019 ◽  
Vol 8 (4) ◽  
pp. 181-185
Author(s):  
Salman Shahid ◽  
Hina Majid ◽  
Khalid Ismail ◽  
Sohail Safdar ◽  
Syed Bilal Hassan
Keyword(s):  
Hearing Loss ◽  
Traffic Noise ◽  
Pure Tone Audiometry ◽  
Moderate Degree ◽  
Noise Induced Hearing Loss ◽  
Developing Regions ◽  
Cross Sectional ◽  
The World ◽  
Severe Degree ◽  
Lahore City

Background: Noise-induced hearing loss (NIHL) is a major cause of disability throughout the world. It is the most common irreversible job-related hazard in the world with a higher burden in the developing regions of the world. Certain occupations are at high risk for NIHL. Traffic wardens could be considered highly vulnerable group as they are exposed to long hours of traffic noise. The objective of this study was to determine the frequency of noise induced hearing loss among traffic wardens of Lahore city.Material and Methods: It was a cross-sectional, descriptive study, carried out from 1st December 2018 to 31st May 2019, in which 329 traffic wardens appointed in 34 beats/sectors of Lahore city were included. Data was collected through a structured questionnaire, followed by Pure Tone Audiometry (PTA) of all the subjects.Results: A total of 329 traffic wardens were selected for this study. Mean age of the traffic wardens was 35.35 ± 1.21 years. NIHL was present in 174 (52.9%) traffic wardens, out of which, 138 (79.3%) had mild, 32 (18.4%) moderate, and 4 (2.3%) had moderately severe degree of hearing loss. Among the 329 traffic wardens, 165 (50.2%) had exposure to noise between 7am to 3pm (morning shift) and 42 (12.8%) had some problem with their hearing. Only 12 (3.6%) had ringing in the ears or tinnitus, 140 (42.6%) wore any hearing protection during duty hours and 42 (12.8%) said they had difficulty in hearing and frequently asked people to repeat themselves.Conclusion: In this study a high frequency of noise induced hearing loss was reported among traffic wardens of Lahore city with most of them having mild to moderate degree of hearing loss.

Frequency of Noise Induced Hearing Loss in Textile Mill Workers

2021 ◽  
Author(s):  
Azmat Tahira ◽  
Warris Ali ◽  
Ambreen Sadaf ◽  
Maria Shahzadi ◽  
Umair Ahsan ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Pure Tone Audiometry ◽  
Cross Sectional Study ◽  
P Value ◽  
Noise Induced Hearing Loss ◽  
Textile Mill ◽  
Chi Square ◽  
Cross Sectional ◽  
Interpersonal Vulnerability

Hearing impairment is a natural ageing as well as the most common reason of disability in the world. Hearing loss can increase the worsening of health quality of life and damaged hearing, which can lead to social behavior, anxiety, interpersonal vulnerability and conflicts for the affected individuals Objectives: The objective of this study is to find out frequency of noise induced hearing loss and its association in textile mill workers. Methods: An analytical cross sectional study was conducted on 125 textile mill workers with nonprobability purposive sampling having 5 to 10 years working experience in spinning and weaving units of age 25 to 40 years (males). Data was collected by performing Otoscopy, tympanometry and pure tone audiometry in noise controlled room, analyzed and evaluated with the help of statistical package for social sciences version 25.00.Pearson chi square was used and P value was equal or less than 5% was taken as significant. Results: Total number of 125(100%) were tested to check their hearing levels by standard pure tone audiometry. Out of 125(100%) 14(11.2 %) were with normal hearing. 28(22.4%) with mild hearing, 36(29%) with mild to moderate hearing, 34(27%) with moderate hearing, 12(10%) with moderately severe hearing and 1(0.8%) with severe hearing levels. Out of 125(100%) 50 (40%) were diagnosed with low level of anxiety, 43(34%) were with moderate level of anxiety and 32(26%) were with severe level of anxiety in all the participants working in the textile mill. Conclusions: It is concluded that the mill workers are on the risk of developing hearing loss of different severity levels which also cause anxiety to them.

scholarly journals Noise Induced Hearing Loss in Steel Factory Workers

2016 ◽  
Vol 4 (2) ◽  
pp. 34-43 ◽  
Author(s):  
Gaurav Agarwal ◽  
Prakash S. Nagpure ◽  
Shweta V. Gadge
Keyword(s):  
Hearing Loss ◽  
Occupational Safety ◽  
Health And Safety ◽  
Cross Sectional Study ◽  
Normal Hearing ◽  
Noise Induced Hearing Loss ◽  
Factory Workers ◽  
Time Duration ◽  
Cross Sectional ◽  
Steel Factory

Background: Industrial noise is usually considered mainly from the point of view of environmental health and safety, rather than nuisance, as sustained exposure can cause permanent hearing damage. Objective: To assess the Noise induced hearing loss in steel factory workers.Methods: It was a cross sectional study done to evaluate the hearing status of factory workers, working nearby a rural hospital, which were then correlated with the duration of work and SPL (in dBA) of exposure at their workplace. Results: In this study, Noise Induced Hearing Loss (NIHL) was calculated in the workers by taking the average of the 4 frequencies i.e. 500Hz, 1000Hz, 2000Hz and 4000Hz in right and left ear separately. Results showed that 129 (37.83%) workers were having Mild SNHL in Right ear i.e. between 26- 40 dB. 203 (59.54%) of the workers were having normal hearing i.e. hearing loss not exceeding 25 dB. Only 9 (2.63%) workers had moderate (41-60 dB) hearing loss in right ears. Whereas in case of left ears results showed that 145 (42.52%) workers were having Mild SNHL in left ear i.e. between 26- 40 dB. 185 (54.25%) of the workers were having normal hearing i.e. hearing loss not exceeding 25 dB. Only 11 (3.23%) workers had moderate (41-60 dB) hearing loss.Conclusion: Duration of exposure of individuals was found in the range from 6 years to 20 years. Maximum number of workers i.e. 235 (68.92%) were exposed to a time duration of 16 to 20 years followed by 96 (28.15%) who were exposed to 11-15 years. There were 10 (2.93) workers who were having the exposure of 6 to 10 years.International Journal of Occupational Safety and Health, Vol 4 No 2(2015) 34 – 43

The effects of dyslipidemia on noise-induced hearing loss in a petrochemical workers in the Southwest of Iran

Work ◽  
2021 ◽  
pp. 1-8
Author(s):  
Payam Rashnoudi ◽  
Arman Amiri ◽  
Maryam Omidi ◽  
Abbas Mohammadi
Keyword(s):  
Hearing Loss ◽  
Cross Sectional Study ◽  
Blood Cholesterol ◽  
Noise Induced Hearing Loss ◽  
Total Blood ◽  
Cross Sectional ◽  
Inner Diameter ◽  
Spss Software ◽  
Southwest Of Iran ◽  
Total Blood Cholesterol

BACKGROUND: Research has shown that the decrease in the inner diameter of vessels caused by hyperlipidemia lowers the capacity for blood oxygen delivery to the cochlea. This leads to impaired cochlear metabolism and causes hearing problems. OBJECTIVE: The effects of dyslipidemia on noise-induced hearing loss in workers were examined. METHODS: This descriptive cross-sectional study was performed on 692 male employees in a petrochemical industry in the southwest of Iran exposed to 85 dB noise. Clinical audiometry and blood sample tests were used to evaluate the hearing and prevalence indices of dyslipidemia (cholesterol, triglyceride, HDL and LDL). The data were analyzed using SPSS software version 25 (p = 0.05). RESULTS: The results showed that the prevalence of dyslipidemia was 24.5%with abnormal relative triglyceride frequency of 49.5%, HDL of 28%, LDL of 33%, and total blood cholesterol level of 37.8%. There was no significant relationship between NIHL and dyslipidemia (p >  0.09). However, the major NIHL drops at different frequencies were in the individuals with dyslipidemia. The parameters age and dyslipidemia increased NIHL odds ratio (95%C.I.). by 1.130 (1.160–1.100) and 1.618 (2.418–1.082) respectively CONCLUSION: The rate of hearing loss in individuals with dyslipidemia increases at different frequencies and it leads to an increase of the OR of NIHL in individuals with dyslipidemia. We can control dyslipidemia and its effective factors. The NIHL is more common in people exposed to noise.

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