Noise induced hearing loss in dance music disc jockeys and an examination of sound levels in nightclubs

2004 ◽  
Vol 118 (2) ◽  
pp. 123-128 ◽  
Author(s):  
Adam Bray ◽  
Marcin Szymański ◽  
Robert Mills
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Study Group ◽  
Temporary Threshold Shift ◽  
Noise Induced Hearing Loss ◽  
Dance Music ◽  
Sound Levels ◽  
Substantial Risk

Noise exposure, hearing loss and associated otological symptoms have been studied in a group of 23 disc jockeys using a questionnaire and pure tone audiometry. The level of noise exposure in the venues where they work has also been studied using Ametek Mk-3 audio dosimeters. Three members of the study group showed clear evidence of noise-induced hearing losson audiometry, 70 per cent reported temporary threshold shift after sessions and 74 per cent reported tinnitus. Sound levels of up to 108 dB(A) were recorded in the nightclubs. The average level for a typical session was 96 dB(A) which is above the level at which the provision of ear protection is mandatory for employers in industry. It can be concluded that DJs are at substantial risk of developing noise-induced hearing loss and noise exposure in nightclubs frequently exceeds safe levels.

Noise

2020 ◽  
pp. 1671-1673
Author(s):  
David Koh ◽  
Tar-Ching Aw
Keyword(s):  
Cardiovascular Disease ◽  
Hearing Loss ◽  
Sleep Disturbance ◽  
Cognitive Performance ◽  
Noise Exposure ◽  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Noise Induced Hearing Loss ◽  
Occupational Setting ◽  
Human Ear

Noise can affect hearing in the occupational setting but can have other effects where exposures are non-occupational. For clinical purposes, noise is measured in decibels weighted according to the sensitivity of the human ear (dB(A)). Regardless of source, the effects of overexposure to noise are similar. Initially there is a temporary threshold shift, where reversibility of hearing loss is possible with removal away from further noise. Noise-induced hearing loss occurs following prolonged or intense exposure, with poor prospects for improvement of hearing. The classical audiogram for noise-induced hearing loss shows a 4 kHz dip. Non-auditory effects of prolonged noise exposure include annoyance, sleep disturbance, hypertension, and cardiovascular disease, stress, and impaired cognitive performance. Prevention of noise-induced hearing loss is by reducing exposure to noise at source minimizing exposure time, using hearing protection, and participating in surveillance.

scholarly journals Audiometric Characteristics of Presbycusis: A Hospital-Based Study

2021 ◽  
Vol 10 (3) ◽  
pp. 169-175
Author(s):  
Ghulam Saqulain ◽  
Gul Zahra ◽  
Nazia Mumtaz
Keyword(s):  
Hearing Loss ◽  
High Frequency ◽  
Pure Tone ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Sampling Technique ◽  
Rehabilitation Medicine ◽  
Speech Discrimination ◽  
Chi Square ◽  
Severe Hearing Loss

Background: Presbycusis is related to degenerative changes of aging resulting from deficient cochlear microcirculation. It is characterized by bilateral, symmetrical, sensorineural hearing loss (SNHL) in which recruitment and speech discrimination is affected in the absence of noise exposure. The objective of this study was to analyze the pure tone audiogram characteristics in Presbycusis. Methods: This descriptive study recruited n=192 cases of presbycusis of both genders, aged 50 to 80 years with convenience sampling technique. The study was conducted at Yusra General Hospital and the National Institute of Rehabilitation Medicine, Islamabad from1st July 2017 to 30th September 2017. Pure tone audiometry was used to collect audiometric data. SPSS-24 was used for data analysis. Chi-square and Pearson’s correlation were used to determine association between variables with p < 0.05 taken as significant. Results: Pure tone audiometry revealed 58 (30.2%) right and 65 (33.9%) left ears with high frequency gently sloping audiogram, while the second commonest configuration being high frequency steeply sloping curve in 51(26.6%) right and 52(27.1%) left ears. There was a significant correlation between the configuration of the audiogram and age with p=0.000, while no significant correlation with gender (p=0.71). The majority,77 (40.10%) right and 71(36.98%) of left ears had moderately severe hearing loss, while severe hearing loss was second commonest with 60(31.25%) right and 70(36.46%) left ears affected. The severity of hearing loss had a significant (P=0.000) positive correlation with age but no significant relationship with gender. Conclusion:  High frequency gently sloping audiogram was the commonest configuration followed by high frequency steeply sloping curve. Moderately severe hearing loss was most commonly seen followed by severe hearing loss.

scholarly journals Research and Discussion on the Relationships between Noise-Induced Hearing Loss and ATP2B2 Gene Polymorphism

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Suhao Zhang ◽  
Enmin Ding ◽  
Haoyang Yin ◽  
Hengdong Zhang ◽  
Baoli Zhu
Keyword(s):  
Hearing Loss ◽  
Gene Polymorphism ◽  
Noise Exposure ◽  
Venous Blood ◽  
Pure Tone Audiometry ◽  
Control Group ◽  
Case Group ◽  
Noise Induced Hearing Loss ◽  
Cochlear Hair Cells ◽  
Potential Biomarker

Long-term and continuous noise exposure can result in noise-induced hearing loss (NIHL), which is a worldwide problem resulting from the interaction of environmental and genetic factors. The ATP2B2 gene polymorphism can destroy cochlear hair cells and increase the risk of NIHL. A case-control study of 760 Chinese textile workers was conducted to investigate the relationship between ATP2B2 polymorphisms and NIHL susceptibility. Venous blood was collected and questionnaires were conducted by professional physicians. A case group and a control group which were typed by individuals’ pure-tone audiometry test results were set. Three polymorphism sites of ATP2B2 were genotyped by using the PCR technique. Analysis results revealed that the C allele of rs3209637 (95%CI=1.08–2.58, odds ratio OR=1.67, P=0.027) was a dangerous factor and could add to risks of NIHL in the Chinese employees. The data of stratified analysis revealed that individuals who are exposed to noise>95 dB with the rs3209637 C genotype have a higher susceptibility to NIHL (OR=1.34, 95%CI=1.07–1.68). Multifactor dimensionality reduction analysis revealed that the interaction between rs14154 and rs3209637 is linked to increased NIHL risk, and for the interaction among rs14154, smoking and drinking had the same function (OR=1.54 and 1.77, 95%CI=1.15–2.07, 1.33–2.37, and P=0.0037 and P<0.0001, respectively). Our results suggest that genetic polymorphism rs3209637 C within ATP2B2 is a risk factor for NIHL among Chinese employees and rs3209637 C could be a potential biomarker for NIHL patients.

scholarly journals Prevalance of Noise Induced Hearing Loss among Traffic Police Personnel of Kathmandu Metropolitan City

2012 ◽  
Vol 9 (4) ◽  
pp. 274-278 ◽  
Author(s):  
I Shrestha ◽  
B L Shrestha ◽  
M Pokharel ◽  
R C M Amatya ◽  
D R Karki
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Positive Impact ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
University Hospital ◽  
P Value ◽  
Noise Induced Hearing Loss ◽  
Traffic Police ◽  
Police Personnel

Background Noise induced hearing loss (NIHL) is a major preventable occupational health hazard. Objective To measure permanent threshold shift in traffic police personnel due to noise exposure and to examine whether it was associated with duration of noise exposure, years of work and risk factors. Methods Cross sectional, descriptive study conducted at Dhulikhel hospital, Kathmandu University Hospital in 110 responding traffic police personnel. Detailed history and clinical examination of ear, impedence audiometry and pure tone audiometry was performed. Results Mean age group was 29.82 years; 82(74.5%) were males and 28 (25.5%) were females. Mean duration of service is 11.86 years. Twenty six (23.6%) had tinnitus and 39(35.5%) had blocked sensation in ear. Sixty five (59.1%) worked between 10-19 years. Alcohol and smoking shows positive impact on NIHL (p value =0.00). Odds ratio with 95% confidence interval were 4.481 (1.925-10.432) and 6.578 (2.306-18.764) respectively. Among 73(66.4%) noise induced hearing loss positive cases, bilateral involvement was seen in 45 (40.9%) and unilateral in 28(25.4 %) cases. Among unilateral cases most were left sided. Hearing threshold at 4 kHz increased according to age and duration of service. Conclusion Traffic police personnel are in constant risk of noise induced hearing loss. Screening for hearing loss is recommended for people exposed to noise.DOI: http://dx.doi.org/10.3126/kumj.v9i4.6343 Kathmandu Univ Med J 2011;9(4):274-8

scholarly journals Dentist’s Hub Bub - A Cross-Sectional Study on Impact of Long-Term Occupational Noise Exposure on Hearing Potential among Dental Practitioners

2021 ◽  
Vol 10 (43) ◽  
pp. 3676-3682
Author(s):  
Jayaprada Reddy Surakanti ◽  
Vikram Reddy Guntakandla ◽  
Preethi Raga ◽  
Vishwaja Uppalapati ◽  
Sai Praveena Kunaparaju ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Control Group ◽  
Dental Practitioners ◽  
Conservative Dentistry ◽  
Loss Of Hearing ◽  
Dental Professionals

BACKGROUND Dentists are liable to loss of hearing during dental treatment due to noise exposure. A study was carried out to determine whether or not dental professionals from the Department of Periodontics, Conservative Dentistry and Endodontics and Prosthodontics ought to cause hearing decrement with the aid of using continual excessive frequency sounds created by dental equipments. METHODS This study involved 38 dentists from the specialities of Periodontics, Conservative Dentistry and Endodontics, and Prosthodontics who were subjected to noise during operating for 6 hours per day and 38 medical professionals who were matched served as a control group. Three audiometric examinations included an otoscopic exam; tympanometry and pure tone audiometry were performed by the participants. RESULTS According to the data, 15.8 % of dentists and 2.6 % of the control group suffered from loss of hearing. In the pure tone audiometry test, there was no substantial difference between the two groups; however, the qualitative analysis showed that the dentists' group had a greater percentage of hearing loss than their control counterparts. In the pure tone audiometry test, there was a statistically significant difference between the specialists from periodontics, conservative dentistry and endodontics, and prosthodontics (P = 0.005). CONCLUSIONS Noise from dental clinics has been shown to cause hearing problems, with the left ear being affected when compared to that of the right; again, these problems aren't serious. Dentists were common among noise-induced hearing impairment and periodontic specialists than conservative dentistry and endodontics, and prosthodontic specialists than the control group. KEY WORDS Dental Professionals, Long Term Exposure, Noise-Induced Hearing Loss, Pure Tone Audiometry.

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

Noise exposure in orthopaedic practice: potential health risk

2004 ◽  
Vol 118 (6) ◽  
pp. 413-416 ◽  
Author(s):  
Ramzan Ullah ◽  
Neil Bailie ◽  
Sean Crowther ◽  
James Cullen
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Speech Discrimination ◽  
Potential Health ◽  
Recorded Sound ◽  
Sound Levels ◽  
Service Staff ◽  
Intense Noise ◽  
Hearing Assessment

Noise exposure is one of the major causes of permanent hearing loss in society. Exposure of health service staff to intense levels of noise in the workplace is a potential risk for the development of temporary and permanent hearing loss.In this prospective study, 18 members of the orthopaedic staff underwent hearing assessment by pure tone audiometry and speech discrimination prior to noise exposure at the workplace and immediately following cessation of work. The number of hours of exposure and noise levels in the workplace was also analysed.Only minimal temporary sensorineural threshold shifts were detected post-noise exposure. There was no change in speech discrimination scores and no individuals complained of tinnitus. The number of hours of exposure ranged from 1.5 to 8.5 hours (mean 5.2 hours). Recorded sound levels for instruments ranged from 119.6 dB at source to 73.1 decibels at 3 metres.Although high sound levels are recorded in the orthopaedic operating theatre, the intermittent nature exposure to the intense noise may protect staff against hearing loss, speech discrimination difficulties and tinnitus.

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 Prevalensi dan Faktor Risiko Tuli Akibat Bising pada Operator Mesin Kapal Feri

2013 ◽  
Vol 7 (12) ◽  
pp. 545
Author(s):  
Jumali Jumali ◽  
Sumadi Sumadi ◽  
Sylvia Andriani ◽  
Misbahul Subhi ◽  
Damianus Suprijanto ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Pure Tone ◽  
Noise Intensity ◽  
Noise Exposure ◽  
Noise Induced Hearing Loss ◽  
Affecting Factors ◽  
Cross Sectional ◽  
Intensity Measurements ◽  
Study Results ◽  
Cross Sectional Design

Kebisingan ruang mesin dapat menyebabkan gangguan pendengaran. Tujuan penelitian ini adalah menganalisis prevalensi tuli akibat bising Noise Induced Hearing Loss (NIHL) dan faktor yang memengaruhi pada operator mesin kapal feri penyeberangan Ketapang-Gilimanuk. Penelitian observasional dengan pendekatan cross sectional ini menggunakan metode pengumpulan data dengan wawancara, pengukuran intensitas kebisingan ruang mesin dan pemeriksaan audiometri terhadap operator. Besar sampel adalah 66 operator dari 36 kapal feri yang memenuhi kriteria inklusi dipilih secara acak. Hasil studi menunjukkan 36% kapal memiliki intensitas kebisingan ² 85 dBA dan 64% > 85 dBA. Pemeriksaan audiometri dengan nada murni pada 66 operator didapatkan 34,85% responden mengalami NIHL. Hasil analisis regresi logistik menunjukkan faktor dominan yang memengaruhi NIHL adalah usia dan lama paparan (p < 0,05). Hasil uji kai kuadrat didapatkan intensitas kebisingan berpengaruh signifikan terhadap NIHL setelah dikoreksi dengan umur dan lama paparan (p < 0,05). Disarankan untuk mengurangi waktu paparan terhadap operator yang terpajan kebisingan tinggi dan menjaga jarak antara operator dengan sumber kebisingan untuk meminimalkan pajanan bising.Engine room noise can cause hearing loss. The objective of this research was to analyze the prevalence of Noise Induced Hearing Loss (NIHL) and its affecting factors on machinery ferry operators at Ketapang-Gilimanuk. This was an observational with cross sectional design, the techniques for collecting data were interviews, noise intensity measurements and audiometric examination.The sample was 66 operators who were selected randomly after inclusion. The study results showed that 36% of ferry have noise intensity ² 85 dBA and 64% have > 85 dBA. The audiometric examination with pure tone result of the 66 operators showed that 34.85% of respondent had NIHL. The age and length of exposure affected NIHL incidence (p < 0.05). While the noise intensity affected the incidence of NIHL (p > 0.05) together with age and lenght of exposure. It is important to reduce exposure time of noisy operations on workers, automation of activities and increase the distance between workers and noisy equipment to minimise the noise exposure.

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