Prevention of the Evolution of Workers' Hearing Loss from Noise-Induced Hearing Loss in Noisy Environments through a Hearing Conservation Program

Introduction Noise-induced hearing loss (NIHL) is a serious problem for workers and therefore for businesses. The hearing conservation program (HCP) is a set of coordinated measures to prevent the development or evolution of occupational hearing loss, which involves a continuous and dynamic process of implementation of hearing conservation routines through anticipation, recognition, evaluation, and subsequent control of the occurrence of existing environmental risks or of those that may exist in the workplace and lead to workers' hearing damage. Objective The aim of this study was to evaluate the effectiveness of the HCP in preventing further hearing loss in workers with audiograms suggestive of NIHL. The audiometric tests and medical records of 28 furniture company workers exposed to noise were reviewed and monitored for 2 years. Methods This retrospective, cross-sectional study examined five audiometric tests in the medical records (on admission and every semester) of 28 workers in a furniture company (totaling 140 audiometric exams) following the introduction of the HCP. Results Data analysis showed no differences between the audiometric tests conducted on admission and those performed every semester. Conclusions The HCP implemented was effective in preventing the worsening of hearing loss in workers already with NIHL when exposed to occupational noise. Therefore, such a measure could be useful for the employment of workers with hearing loss in job sectors that have noise exposure.

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Prevalence of Hearing Loss in Military Aviators: The Audiometry and Risk Factors Analysis

Journal of Armed Forces Medical College Bangladesh ◽

10.3329/jafmc.v9i1.18721 ◽

2014 ◽

Vol 9 (1) ◽

pp. 19-24

Author(s):

MR Alam ◽

MA Wahab ◽

MM Rahman ◽

AKM Asaduzzaman ◽

MAS Al-Azad ◽

...

Keyword(s):

Risk Factors ◽

Hearing Loss ◽

Noise Exposure ◽

Health Hazard ◽

Hearing Threshold ◽

Armed Forces ◽

Cross Sectional Study ◽

Noise Induced Hearing Loss ◽

Cross Sectional ◽

Medical Checkup

Introduction: Noise Induced Hearing Loss (NIHL) is an occupational health hazard linked with noise exposure of more than 85 dB. Aircraft noise and other occupational noise exposure cause military aviators more susceptible to NIHL than commercial jet pilots. Aim: To find out the prevalence of noise induced hearing loss among different military aircrew population with special emphasis on identifying the associated risk factors. Materials and Methods: This cross sectional study was conducted on Kuwait Air force pilots those who came for annual medical checkup from July 2010 to July 2012. Audiometry of all subjects was done by ENT specialist and necessary data were collected by structured questionnaires. All data were analyzed by SPSS (Statistical Package for the Social Sciences) version 17.0 Results: Out of 221 aircrew 32 (14.48%) developed NIHL. Hearing loss was mild to moderate and predominately at high frequencies. Most affected group was helicopter pilots. Pilots of more than 40 years of age and those who had more than 1000 flying hours had mean hearing threshold more than other groups. The right ear was affected in majority of cases than left ear. Conclusion: Noise exposure to aircrew is inevitable so hearing loss prevention strategies might play a pivotal role to save aircrew hearing. Active surveillance of hearing protection practices might have beneficiary effect. Steps can be taken for early detection of NIHL and hearing conservation program. DOI: http://dx.doi.org/10.3329/jafmc.v9i1.18721 Journal of Armed Forces Medical College Bangladesh Vol.9(1) 2013: 19-24

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Sex differences in noise-induced hearing loss: a cross-sectional study in China

Biology of Sex Differences ◽

10.1186/s13293-021-00369-0 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Qixuan Wang ◽

Xueling Wang ◽

Lu Yang ◽

Kun Han ◽

Zhiwu Huang ◽

...

Keyword(s):

Risk Factors ◽

Hearing Loss ◽

Sex Differences ◽

Noise Exposure ◽

Low Frequency ◽

Cross Sectional Study ◽

Noise Induced Hearing Loss ◽

Sectional Study ◽

Cross Sectional ◽

Exposure Levels

Abstract Background Significant sex differences exist in hearing physiology, while few human studies have investigated sex differences in noise-induced hearing loss (NIHL), and the sex bias in previous studies resulted in inadequate female data. The study aims to investigate sex differences in the characteristics of NIHL to provide insight into sex-specific risk factors, prevention strategies and treatment for NIHL. Methods This cross-sectional study included 2280 industrial noise-exposed shipyard workers (1140 males and 1140 females matched for age, job and employment length) in China. Individual noise exposure levels were measured to calculate the cumulative noise exposure (CNE), and an audiometric test was performed by an experienced technician in a soundproof booth. Sex differences in and influencing factors of low-frequency (LFHL) and high-frequency hearing loss (HFHL) were analyzed using logistic regression models stratified by age and CNE. Results At comparable noise exposure levels and ages, the prevalence of HFHL was significantly higher in males (34.4%) than in females (13.8%), and males had a higher prevalence of HFHL (OR = 4.19, 95% CI 3.18 to 5.52) after adjusting for age, CNE, and other covariates. Sex differences were constant and highly remarkable among subjects aged 30 to 40 years and those with a CNE of 80 to 95 dB(A). Alcohol consumption might be a risk factor for HFHL in females (OR = 3.12, 95% CI 1.10 to 8.89). Conclusions This study indicates significant sex differences in NIHL. Males are at higher risk of HFHL than females despite equivalent noise exposure and age. The risk factors for NIHL might be different in males and females.

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

Pakistan Armed Forces Medical Journal ◽

10.51253/pafmj.v1i1.3850 ◽

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.

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Hubungan merokok dengan gangguan pendengaran akibat bising pada pekerja pabrik kelapa sawit X

Oto Rhino Laryngologica Indonesiana ◽

10.32637/orli.v47i2.218 ◽

2018 ◽

Vol 47 (2) ◽

pp. 95

Author(s):

Maesyara Adinda Sari ◽

Adlin Adnan ◽

Delfitri Munir ◽

Putri Chairani Eyanoer

Keyword(s):

Hearing Loss ◽

Cigarette Smoking ◽

Noise Exposure ◽

Smoking Habit ◽

Organ Of Corti ◽

Cross Sectional Study ◽

Noise Induced Hearing Loss ◽

Cross Sectional ◽

Occupational Noise Exposure ◽

Study Results

Latar belakang: Paparan bising dapat mengakibatkan kerusakan pada organ korti, dan menurunkan aliran darah koklea yang mengakibatkan hipoksia koklea. Merokok diketahui sebagai ototoksik langsung dan pemicu iskemia koklea. Kebiasaan merokok dan paparan bising secara sendiri ataupun secara bersama-sama dapat menyebabkan gangguan pendengaran. Tujuan: Mengetahui hubungan merokok terhadap kejadian gangguan pendengaran akibat bising (GPAB). Metode: Penelitian analitik dengan pendekatan potong lintang. Hasil: Dari 122 pekerja, didapati sebanyak 89,3% pekerja mengalami GPAB. Tuli ringan paling banyak ditemukan (68,8%). Didapatkan adanya hubungan yang signifikan antara tipe perokok dengan derajat beratnya GPAB (p=0,000). Kemungkinan pekerja yg merokok untuk mengalami GPAB 1,224 kali lebih besar dibandingkan dengan pekerja yang tidak merokok (PR=1,224, p=0,002, CI 95%=1,077–1,392). Kesimpulan: Terdapat hubungan yang signifikan antara kebiasaan merokok dengan kejadian GPAB.Kata kunci: Merokok, gangguan pendengaran, gangguan pendengaran akibat bising, bising lingkungan kerja ABSTRACT Introduction: Noise exposure can lead to the organ of corti damage, and decrease the blood flow to the cochlea resulting in cochlear hypoxia. Cigarette smoking could be ototoxic to cochlea, and could evoke cochlear ischemia. Cigarette smoking habit and noise exposure, each or together can cause hearing loss. Objective: To identify the correlation between cigarette smoking and noise induced hearing loss (NIHL). Method: Analytic with a cross-sectional study. Results: From the 122 workers, we found that the proportion of NIHL was 89.3%. Mild deafness was most common (68.8%). We found that there was a significant correlation between type of smokers and grade of hearing loss (p=0.000). Workers who smoked likely to undergo NIHL 1.224 times greater than nonsmokers (PR=1.224, p=0.002, CI 95%=1.077–1.392). Conclusion: There was a significant correlation between cigarette smoking habit and noise induced hearing loss.Keywords : Cigarette smoking, hearing loss, noise induced hearing loss, occupational noise exposure

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Audiometric profile of civilian pilots according to noise exposure

Revista de Saúde Pública ◽

10.1590/s0034-8910.2014048005256 ◽

2014 ◽

Vol 48 (5) ◽

pp. 790-796 ◽

Cited By ~ 2

Author(s):

Taiana Pacheco Falcão ◽

Ronir Raggio Luiz ◽

Gabriel Eduardo Schütz ◽

Márcia Gomide da Silva Mello ◽

Volney de Magalhães Câmara

Keyword(s):

Hearing Loss ◽

Pure Tone ◽

Noise Exposure ◽

Acoustic Stimulus ◽

Cross Sectional Study ◽

Exposure Level ◽

Noise Induced Hearing Loss ◽

Length Of Service ◽

Cross Sectional ◽

Air Conduction

OBJECTIVE To evaluate the audiometric profile of civilian pilots according to the noise exposure level. METHODS This observational cross-sectional study evaluated 3,130 male civilian pilots aged between 17 and 59 years. These pilots were subjected to audiometric examinations for obtaining or revalidating the functional capacity certificate in 2011. The degree of hearing loss was classified as normal, suspected noise-induced hearing loss, and no suspected hearing loss with other associated complications. Pure-tone air-conduction audiometry was performed using supra-aural headphones and acoustic stimulus of the pure-tone type, containing tone thresholds of frequencies between 250 Hz and 6,000 Hz. The independent variables were professional categories, length of service, hours of flight, and right or left ear. The dependent variable was pilots with suspected noise-induced hearing loss. The noise exposure level was considered low/medium or high, and the latter involved periods > 5,000 flight hours and > 10 years of flight service. RESULTS A total of 29.3% pilots had suspected noise-induced hearing loss, which was bilateral in 12.8% and predominant in the left ear (23.7%). The number of pilots with suspected hearing loss increased as the noise exposure level increased. CONCLUSIONS Hearing loss in civilian pilots may be associated with noise exposure during the period of service and hours of flight.

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Field Monitoring of Otoacoustic Emissions During Noise Exposure: Pilot Study in Controlled Environment

American Journal of Audiology ◽

10.1044/2017_aja-17-0003 ◽

2017 ◽

Vol 26 (3S) ◽

pp. 352-368 ◽

Cited By ~ 1

Author(s):

Vincent Nadon ◽

Annelies Bockstael ◽

Dick Botteldooren ◽

Jérémie Voix

Keyword(s):

Hearing Loss ◽

Pilot Study ◽

Otoacoustic Emissions ◽

Ambient Noise ◽

Noise Exposure ◽

High Temporal Resolution ◽

Noise Induced Hearing Loss ◽

Conservation Programs ◽

Hearing Conservation ◽

Hearing Status

Purpose In spite of all the efforts to implement workplace hearing conservation programs, noise-induced hearing loss remains the leading cause of disability for North American workers. Nonetheless, an individual's susceptibility to noise-induced hearing loss can be estimated by monitoring changes in hearing status in relation to the level of ambient noise exposure. The purpose of this study was to validate an approach that could improve workplace hearing conservation practices. The approach was developed using a portable and robust system designed for noisy environments and consisted of taking continuous measurements with high temporal resolution of the health status of the inner ear using otoacoustic emissions (OAEs). Method A pilot study was conducted in a laboratory, exposing human subjects to industrial noise recordings at realistic levels. In parallel, OAEs were measured periodically using the designed OAE system as well as with a commercially available OAE system, used as a reference. Results Variations in OAE levels were analyzed and discussed along with the limitations of the reference and designed systems. Conclusions This study demonstrates that the monitoring of an individual's OAEs could be useful in monitoring temporary changes in hearing status induced by exposure to ambient noise and could be considered as a new tool for effective hearing conservation programs in the workplace.

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

Work ◽

10.3233/wor-213607 ◽

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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Assessment of Noise Exposure and Hearing Loss Among Workers in Textile Mill (Thamine), Myanmar: A Cross-Sectional Study

Safety and Health at Work ◽

10.1016/j.shaw.2020.04.002 ◽

2020 ◽

Vol 11 (2) ◽

pp. 199-206

Author(s):

Aung K. Zaw ◽

Aung M. Myat ◽

Mya Thandar ◽

Ye M. Htun ◽

Than H. Aung ◽

...

Keyword(s):

Hearing Loss ◽

Noise Exposure ◽

Cross Sectional Study ◽

Sectional Study ◽

Textile Mill ◽

Cross Sectional

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

Journal of Medical Science & Research ◽

10.47648/jmsr.2012.v1902.02 ◽

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.

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GAMBARAN SIKAP TERHADAP KEBISINGAN PADA SISWA SMK NEGERI 2 MANADO

e-CliniC ◽

10.35790/ecl.2.2.2014.5027 ◽

2014 ◽

Vol 2 (2) ◽

Author(s):

Haidy Febrian Raintung ◽

Steward K. Mengko ◽

Julied Dehoop

Keyword(s):

Hearing Loss ◽

Positive Attitude ◽

Noise Exposure ◽

Hearing Threshold ◽

Negative Attitude ◽

Primary Source ◽

Cross Sectional Study ◽

Cross Sectional ◽

Music Player ◽

Senior Secondary

Abstract: Hearing loss is the inability of a person’s sense of hearing in listening range of sound that can still be heard by people with normal hearing. With the growing popularity of entertainment venues (discos, karaoke, music concerts, internet cafes, etc.) as well as the use of portable music player, leisure noise have become the primary source that causing increased incidence of adolescent noise induced hearing loss (NIHL). Attitudes towards noise needs to be assessed at a young age, this is because the attittude is the basis of behavior, and behavior (towards leisure noise) can affect the amount of noise exposure of each person. Chronicity of NIHL symptoms often make adolescent tends to ignore the serious long-term problem that can arise and not take steps to resolve it. Objective: The purpose of this study is to obtain data from students of Manado 2nd Vocational Senior Secondary School concerning attitudes towards noise. Method: This research used descriptive observational with cross-sectional study. The subjects are students of Stone Concrete’s majors in Manado 2nd Vocational Senior Secondary Schoolthat have passed initial hearing screening. Result: Of the 20 respondents who willingly take part in this research, obtained 5 respondents (25%) had negative attitude, 10 respondents (50%) had neutral attitude, and 5 respondents (25%) had positive attitude. From audiometric examination, obtained 4 respondents had a mild decreased in hearing threshold. Of the 4 respondents, 2 (50%) of them had a neutral attitude and 2 other respondents (50%) had positive attitude. Conclusion: Respondents with positive attitude towards noise are vulnurable to hearing threshold changes caused by daily noise exposure.Keywords: adolescent, hearing, noise, attitudes towards noise Abstrak: Gangguan pendengaran merupakan ketidakmampuan indra pendengaran seseorang dalam mendengarkan rentang suara yang masih dapat didengar oleh orang dengan pendengaran normal. Semakin berkembangnya popularitas dari tempat-tempat hiburan (diskotik, karaoke, konser musik, warung internet, dan lain sebagainya) serta penggunaan pemutar musik portabel telah menjadi sumber peningkatan angka kejadian gangguan pendengaran akibat bising (GPAB) pada usia muda. Sikap terhadap kebisingan perlu dinilai pada usia muda, hal ini dikarenakan sikap merupakan dasar dalam berperilaku, dan perilaku (terhadap kebisingan sosial) dapat mempengaruhi derajat paparan bising masing-masing orang. Kronisitas dari gejala (GPAB) membuat kaum muda kurang menanggapi serius masalah-masalah jangka panjang yang dapat ditimbulkan, serta mengambil langkah untuk mengatasinya. Tujuan: Tujuan penelitian ini adalah untuk memperoleh data sikap terhadap kebisingan pada siswa sekolah menengah kejuruan (SMK) Negeri 2 Manado. Metode Penelitian:Penelitian ini merupakan penelitian deskriptif observasional dengan menggunakan metode cross-sectional. Subjek penelitian adalah siswa jurusan Teknik Konstruksi Batu Beton (TKBB) SMK Negeri 2 Manado yang sudah melewati screening pendengaran awal. Hasil: Dari 20 responden yang bersedia menjadi responden penelitian, didapatkan 5 responden (25%) mempunyai sikap negatif, 10 responden (50%) mempunyai sikap netral, dan 5 responden (25%) mempunyai sikap positif. Dari pemeriksaan audiometrik, didapatkan 4 responden mengalami penurunan ambang dengar derajat ringan. Dari 4 responden tersebut, 2 (50%) diantaranya mempunyai sikap netral dan 2 responden (50%) mempunyai sikap positif. Simpulan: Responden yang bersikap positif terhadap bising (pro-bising) rentan terhadap terjadinya perubahan ambang dengar yang akibatkan oleh paparan kebisingan sehari-hari.Kata kunci: usia muda, pendengaran, bising, sikap terhadap kebisingan

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