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 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 288 Hearing Loss as a Potentially Modifiable Risk Factor in People with Mild Cognitive Symptoms Attending a Specialist Memory Service

2019 ◽  
Vol 48 (Supplement_3) ◽  
pp. iii17-iii65
Author(s):  
Cathy McHale ◽  
Jennifer Sharkey ◽  
Tara Coughlan ◽  
Desmond O’Neill ◽  
Joshi Dookhy ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Risk Factor ◽  
Hearing Aids ◽  
Noise Exposure ◽  
Care Pathway ◽  
Pure Tone Audiometry ◽  
Modifiable Risk Factor ◽  
Speech Discrimination ◽  
Loss Assessment ◽  
Memory Assessment

Abstract Background People with mild hearing loss at age 50 are twice as likely to develop dementia increasing to a five times greater risk for those with severe hearing loss. The prevalence of dementia and hearing impairment increase with age. Intact hearing enables cognition, facilitates social interaction and enhances communication. Hearing loss, social isolation and dementia are commonly interwoven. We recently commenced routine audiology screening in our memory service. Methods Consecutive patients with mild cognitive impairment attending a tertiary memory assessment and support service were referred for full audiology screening. People were routinely referred on basis of cognitive diagnosis, and not on the basis of perceived hearing loss. Assessment included ENT history, otoscopy, tympanometry, pure tone audiometry and speech audiometry to determine the presence, type and amount of any hearing loss present. This included speech discrimination testing – a functional test to determine processing of 10 phonetically balanced words with 100% being an optimal response. Results 20 people (12 women), mean age 72.3 (range 57-87) were assessed. The majority had amnestic MCI 18/20 (90%). 9/20 (45%) patients subjectively complained of hearing loss. 7/20 (35%) had history of occupational noise exposure. 12/20 (60%) had occlusion due to ear wax. Hearing loss identified: Mild 8/20 (40%); Moderate to severe 7/20 (35%); with Normal hearing in 5/20 (25%). High frequency hearing loss was noted in 19/20 (95%). Speech discrimination score was impaired in those with hearing loss: mean 89.4% (range 66-100). 6/20 (30%) received referral for hearing aids. Conclusion This study highlights the importance of incorporating an assessment of auditory acuity as part of memory assessment and post-diagnostic care-pathway for people with mild cognitive complaints given the established impact hearing loss has on the future risk for cognitive decline. Hearing loss is frequently unidentified and is a clear modifiable risk factor to promote brain health.

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.

A Study of Noise Exposure and Hearing Sensitivity in a High School Woodworking Class

1993 ◽  
Vol 24 (3) ◽  
pp. 167-173 ◽  
Author(s):  
James E. Lankford ◽  
Denise M. West
Keyword(s):  
High School ◽  
Hearing Loss ◽  
Noise Exposure ◽  
Low Noise ◽  
Control Group ◽  
Single Class ◽  
Hearing Sensitivity ◽  
Sound Levels ◽  
Hearing Thresholds ◽  
Technical Drawing

The purpose of this study was to determine if noise in a high school woodworking class could contribute to the incidence of hearing loss. Students in the woodworking class served as the experimental group, and students in a technical drawing class were the control group. Four separate experiments were conducted. Experiment 1 consisted of measuring and comparing the sound levels in the woodworking and the technical drawing class environments. In Experiment 2, dosimetry samples of the students in both classrooms were collected. In Experiment 3, the temporary threshold shifts (TTSs) were determined for students in both groups by assessing hearing thresholds at the beginning and end of a single class period. The focus of Experiment 4 was to determine if a threshold shift had occurred in the hearing of the students in the woodworking class over a semester. Results of this study suggest that hazardous noise levels in the high school woodworking shop caused statistically significant TTS among the students. Relatively low noise doses were recorded, but no significant changes in hearing thresholds from the beginning to the end of the semester were noted. It was concluded that repeated noise exposure in a woodworking class may be a contributing factor to hearing loss among a student population and that a hearing conservation program should be instituted in these high school environments.

scholarly journals Sensorineural hearing loss in high school teenagers in Mexico City and its relationship with recreational noise

2009 ◽  
Vol 25 (12) ◽  
pp. 2553-2561 ◽  
Author(s):  
María del Consuelo Martínez-Wbaldo ◽  
Claudia Soto-Vázquez ◽  
Ivonne Ferre-Calacich ◽  
Elizabeth Zambrano-Sánchez ◽  
Lucía Noguez-Trejo ◽  
...  
Keyword(s):  
Risk Factors ◽  
High School ◽  
Hearing Loss ◽  
High School Students ◽  
Mexico City ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Public High School ◽  
School Students ◽  
Associated Risk Factors

The aim of this study was to measure the frequency of hearing loss in a sample of typical public high-school students exposed to recreational noise, and determine associated risk factors. The sample was made up of 214 teenagers from a high-school in Mexico City; subjects were selected randomly per strata. We applied a questionnaire to identify risk factors for hearing loss and performed a battery of audiologic tests consisting of otoscopy, tympanometry, and pure-tone audiometry. The mean age of the sample was 16 ± 1.07 years; 73% were male and 27%, female. Hearing loss was found in 21% of students. The main hearing loss-related risk factor was exposure to recreational noise: frequent attendance at discotheques and pop-music concerts; use of personal stereos; and noise exposure in school workshops. The high frequency of hearing loss in high school students from one Mexico City school (nearly one fifth of the sample) was found to be related to noise exposure mainly during recreational activities.

Intermittent Exposure to Noise: Effects on Hearing

1983 ◽  
Vol 92 (6) ◽  
pp. 623-628 ◽  
Author(s):  
Joseph Sataloff ◽  
Robert T. Sataloff ◽  
Raymond A. Yerg ◽  
Hyman Menduke ◽  
Robert P. Gore
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Continuous Exposure ◽  
Hearing Results ◽  
Noise Effects ◽  
High Frequencies ◽  
Severe Loss ◽  
Intermittent Exposure ◽  
Intense Noise ◽  
Continuous Noise

Most studies of the effects of noise upon hearing have dealt with continuous noise exposure. Previous reports on intermittent exposure to noise concluded that it causes less damage to hearing than does continuous exposure to noise of the same intensity. In this investigation, 12,000 workers were screened to find 295 subjects who met the strict criteria of the study. Most of the subjects were exposed to jackhammer noise at peak levels of 118 dBA. Intermittent exposure to intense noise results in very severe loss in high frequencies but relatively little or no hearing loss in the lower frequencies even after many years of exposure. This differs substantially from the effects of continuous exposure to noise of the same intensity. It remains to be determined whether this pattern of hearing results from intermittent exposure to all sorts of noise or only from the kinds of sources investigated in this study.

scholarly journals Genetic and audiologic study in elderly with sensorineural hearing loss

CoDAS ◽  
2013 ◽  
Vol 25 (3) ◽  
pp. 224-228 ◽  
Author(s):  
Kelly Martins ◽  
Marília Fontenele ◽  
Silva Câmara ◽  
Edi Lúcia Sartorato
Keyword(s):  
Hearing Loss ◽  
Sensorineural Hearing Loss ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Genetic Mutation ◽  
Sensorineural Hearing ◽  
Control Group ◽  
Case Group ◽  
Syndromic Hearing Loss ◽  
And Gender

PURPOSE: This study aimed to correlate probable predisposing factors for sensorineural hearing loss in elderly by investigating the audiologic characteristics and frequency of mutations in genes considered responsible for non-syndromic hearing loss. METHODS: Sixty elderly patients were separated into two groups: the Case Group, composed of 30 individuals, 21 females and nine males, all 60 years old or older and presenting diagnoses of sensorineural hearing loss, and the Control Group, composed of 30 elderly individuals matched to the experimental group by age and gender, presenting normal hearing. The patients underwent anamnesis and pure tone audiometry in frequencies of 250, 500, 1000, 2000, 3000, 4000 and 6000 Hz. Blood samples were collected from each patient for analysis of mutations in nuclear and mitochondrial genes related to non-syndromic sensorineural hearing loss. RESULTS: It was observed a greater tendency to noise exposure and consumption of alcohol in the Case Group. The statistically significant symptoms between the groups were tinnitus and hearing difficulty in several situations as: silent environment, telephone, television, sound location and in church. All the individuals of Case Group presented sensorineural and bilateral hearing loss. The symmetry and progression of the hearing impairment were also statistically significant between the groups. No genetic mutations were identified. CONCLUSION: The most reported symptoms were communication difficulties and tinnitus. The predominant auditory characteristics included sensorineural, bilateral, progressive and symmetrical hearing loss. It was not evidenced a relationship between sensorineural hearing loss in elderly and genes considered responsible for non-syndromic hearing loss as no genetic mutation was found in this study.

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

Noise Exposure, Hearing Loss, Speech Discrimination and Tinnitus

1984 ◽  
Vol 98 (S9) ◽  
pp. 74-76 ◽  
Author(s):  
Maurice H. Miller ◽  
John R. Jakimetz
Keyword(s):  
Hearing Loss ◽  
Noise Exposure ◽  
Complete Recovery ◽  
Clinical Situation ◽  
Speech Discrimination ◽  
Discrimination Ability ◽  
Essentially Normal ◽  
Word Discrimination

Noise exposure in the workplace and the recreational environment probably accounts for more new cases of tinnitus and hearing loss than all other causes combined. To an increasing degree, preemployment audiograms of late teenagers and those in their early twenties show noise-induced, sensorineural ‘notches’ greatest at 4000 or 6000 Hz with partial or complete recovery at 8000 Hz. Word discrimination tests, as typically evaluated in a clinical situation, show essentially normal findings although more difficult measures of consonant discriminations such as the California Consonant Test or conventional speech tests in a background of noise often demonstrate impaired word discrimination ability.

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