scholarly journals Findings on the Central Auditory Functions of Endemic Disease Control Agents

2021 ◽  
Vol 18 (13) ◽  
pp. 7051
Author(s):  
Patrícia Arruda de Souza Alcarás ◽  
Bianca Simone Zeigelboim ◽  
Maria Cristina Alves Corazza ◽  
Débora Lüders ◽  
Jair Mendes Marques ◽  
...  
Keyword(s):  
Disease Control ◽  
Otoacoustic Emissions ◽  
Noise Exposure ◽  
Pesticide Exposure ◽  
Exposed Group ◽  
Occupational Noise ◽  
Endemic Disease ◽  
Transient Evoked Otoacoustic Emissions ◽  
Suppression Effect ◽  
Auditory Functions

This study aimed to assess the central auditory functions of endemic disease control agents. This cross-sectional cohort study comprised two groups: the exposed group, with 38 male endemic disease control agents with simultaneous occupational noise and pesticide exposure; and the control group, with 18 age- and sex-matched workers without occupational noise and/or pesticide exposure. All participants underwent pure-tone audiometry, brainstem auditory evoked potentials, dichotic digits test, and transient-evoked otoacoustic emissions suppression effect. There was a significant inter-group difference in waves III and V absolute latencies, and interpeak I–III and I–V latencies bilaterally, with worse results found in the exposed group. Abnormal dichotic digits test results occurred more often in the exposed group, with a significant association between pesticide- and noise-exposure and the abnormal results (p = 0.0099). The transient-evoked otoacoustic emissions with suppression effect did not yield significant inter-group differences. It was concluded that pesticide and noise exposure induce harmful effects on the central auditory functions, particularly on the brainstem and figure-ground speech-sound auditory skills.

Vocal Performance Teachers and Hearing Loss

2015 ◽  
Vol 16 (1) ◽  
pp. 15-24
Author(s):  
Vance Gunnell ◽  
Jeff Larsen
Keyword(s):  
Hearing Loss ◽  
Otoacoustic Emissions ◽  
Noise Exposure ◽  
Vocal Performance ◽  
Occupational Noise ◽  
Hearing Conservation ◽  
Occupational Noise Exposure ◽  
Distortion Product ◽  
Hearing Thresholds ◽  
Performance Teachers

Hearing thresholds and distortion product otoacoustic emissions were measured for teachers of vocal performance who were gathered for a national conference. Results showed mean audiometric thresholds to be consistent with noise induced hearing loss, more than what would be expected with normal aging. Years of instruction and age were considered as factors in the hearing loss observed. It was concluded that hearing conservation should be initiated with this group to help raise awareness and protect them from hearing loss due to occupational noise exposure.

scholarly journals Auditory effects of recreational and occupational noise exposure among dental students: a cross-sectional study

Revista CEFAC ◽  
2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Eduardo Fuentes-López ◽  
Francisco García-Huidobro Nuñez ◽  
Pamela Acuña Caro ◽  
Nicolás Castro Becerra ◽  
Gabriela Jalil García ◽  
...  
Keyword(s):  
Otoacoustic Emissions ◽  
Noise Exposure ◽  
Cross Sectional Study ◽  
Dental Students ◽  
Multivariate Model ◽  
Health Science ◽  
Control Group ◽  
Occupational Noise ◽  
Cross Sectional ◽  
Occupational Noise Exposure

ABSTRACT Purpose: to determine the auditory effects of noise exposure from recreational and occupational sources among dentistry students. Methods: forty-two dentistry students, routinely exposed to occupational noise, and 72 students from other health science schools were recruited (control group). Audiometric testing, otoacoustic emissions and questionnaires to assess recreational and occupational noise were applied to the sample. The presence of a notch was determined for each participant audiometry´s test based on the criteria proposed by Coles et al. Differences in notch prevalence were analyzed by applying univariate regression models as well as a multivariate model adjusted by covariates. Results: non-significant differences in auditory thresholds between groups were found. The controls exhibited a significantly higher prevalence of a notch at 4 kHz than the group exposed to noise. However, the differences were not statistically significant in the multivariate model adjusted by recreational noise exposure. Conclusions: the occupational noise exposure was not significantly associated to auditory system dysfunction. In addition, the differences in notch prevalence could be related to recreational noise exposure.

Effects of chronic noise exposure on speech-in-noise perception in the presence of normal audiometry

2013 ◽  
Vol 127 (3) ◽  
pp. 233-238 ◽  
Author(s):  
A J Hope ◽  
L M Luxon ◽  
D-E Bamiou
Keyword(s):  
Air Force ◽  
Auditory Processing ◽  
Otoacoustic Emissions ◽  
Pure Tone ◽  
Noise Exposure ◽  
Pure Tone Audiometry ◽  
Frequency Discrimination ◽  
Royal Air Force ◽  
Transient Evoked Otoacoustic Emissions ◽  
Speech In Noise

AbstractObjective:To assess auditory processing in noise-exposed subjects with normal audiograms and compare the findings with those of non-noise-exposed normal controls.Methods:Ten noise-exposed Royal Air Force aircrew pilots were compared with 10 Royal Air Force administrators who had no history of noise exposure. Participants were matched in terms of age and sex. The subjects were assessed in terms of: pure tone audiometry, transient evoked otoacoustic emissions, suppression of transient evoked otoacoustic emissions in contralateral noise and auditory processing task performance (i.e. masking, frequency discrimination, auditory attention and speech-in-noise).Results:All subjects had normal pure tone audiometry and transient evoked otoacoustic emissions amplitudes in both ears. The noise-exposed aircrew had similar pure tone audiometry thresholds to controls, but right ear transient evoked otoacoustic emissions were larger and speech-in-noise thresholds were elevated in the noise-exposed subjects compared to controls.Conclusion:The finding of poorer speech-in-noise perception may reflect noise-related impairment of auditory processing in retrocochlear pathways. Audiometry may not detect early, significant noise-induced hearing impairment.

scholarly journals Occupational Noise-Induced Tinnitus：Knowledge, Attitude and Practice (KAP)

2020 ◽  
Author(s):  
Lu Bai ◽  
Jianping Yu ◽  
Hong Du ◽  
Zhuang Shen ◽  
Hongyan Yang
Keyword(s):  
Noise Exposure ◽  
Hearing Threshold ◽  
Clinic Visit ◽  
Sound Level ◽  
Exposed Group ◽  
Control Group ◽  
Exposure Level ◽  
Occupational Noise ◽  
Exposed Workers ◽  
The Difference

Abstract Background: Occupational noise is the most common hazards in the workplaces. Noise exposure may induce tinnitus (ringing in the ears), which seriously affects workers’ normal life, even impair their work performance. To investigate associations between if respondents are awareness of tinnitus induced by occupational noise (Knowledge), what the viewpoint they have (Attitude) and how they cope with it (Practice). Methods: A questionnaire based cross-sectional study was conducted. 519 noise-exposed workers in railway transportation mechanical manufacturers were recruited as the exposed group. 515 non noise-exposed workers as the control group. To investigate the effects of noise exposure level, the exposed group was classified into 4 subgroups according to sound level measurements reported by industrial hygienists., while the exposed group was categorized into 3 subgroups according to usage of personal hearing protection device (PHPD). Questionnaire was focused on medical history, occupational history, life habits and tinnitus for all participants. Qualified audiologists assessed hearing threshold by using standardized audio-metric procedures assuring at least 48 h of noise avoidance.Results: The prevalence of tinnitus were 36.6% and 18.8% in the exposed group and in the control group, respectively. The difference was statistically significant (c2=40.725, P<0.05). The prevalence of tinnitus were 36.2%, 20.5% and 41.7% in 3 using PHPD subgroups of the exposed group. The difference was statistically significant (c2=6.072, P<0.05). The prevalence of tinnitus were 34.7%，8.3%，63.6% and 54.0% in 4 sound level subgroups. The difference was statistically significant (c2trend=30.491, P < 0.05). The percentage of clinic visit for tinnitus was 15.8% in the exposed group. 93.2% workers claimed tinnitus symptoms were unimproved since they still heard buzzing or ringing in ears. 81.05% of them gave up treatment. The percentage of clinic visit for tinnitus was 7.2% in the control group and 99.0% workers claimed tinnitus symptoms were unimproved. Conclusions: Only when workers have awareness of tinnitus and tinnitus treatment can they have positive attitude and better practice. Noise-exposed workers should periodically attend educational courses on “taking care of your ears” and should be under the supervision.

Assessing the Effects of Pesticide Exposure on the Auditory System based on the Suppression of Transient-Evoked Otoacoustic Emissions

2016 ◽  
Vol 2016 (1) ◽  
Author(s):  
Maria Isabel Kós* ◽  
Tatiana Garcia ◽  
Silvana Frota ◽  
Maria de Fátima Miranda ◽  
Armando Meyer
Keyword(s):  
Auditory System ◽  
Otoacoustic Emissions ◽  
Pesticide Exposure ◽  
Transient Evoked Otoacoustic Emissions

Use of transient evoked otoacoustic emissions as a hearing screen after high-intensity noise exposure

2021 ◽  
Vol 20 (4) ◽  
pp. 21-26
Author(s):  
V. V. Dvoryanchikov ◽  
◽  
M. S. Kuznetsov ◽  
L. A. Glaznikov ◽  
M. V. Morozova ◽  
...  
Keyword(s):  
High Intensity ◽  
Otoacoustic Emissions ◽  
Noise Exposure ◽  
Screening Method ◽  
Organ Damage ◽  
Intensity Noise ◽  
Transient Evoked Otoacoustic Emissions ◽  
Hearing Research ◽  
Hearing Organ ◽  
The Right

Hearing organ damage caused by high-intensity noise continues to be one of the actual problems of modern otorhinolaryngology. This study aims to evaluate the effectiveness of transient evoked otoacoustic emissions (TEOAEs) as a screening method for hearing research. 15 patients (men aged 18 to 28 years) were examined before and after exposure to high-intensity noise of artillery weapons. All patients passed a set of diagnostic tests: otoscopy, whispered voice test, tonal threshold audiometry, and TEOAE. Hearing thresholds according to audiometry did not exceed normal values. However, the number of people who passed the test TEOAE after noise exposure was 46.6% in the right ear and 40.0% in the left ear, which was statistically significantly different from the data obtained before the shooting. The authors conclude that TEOAE allows evaluation of the functional state of the hearing organ better than tonal threshold audiometry. This technique can be used for mass screening of individuals who are most sensitive to the effects of high-intensity noise, as well as for their further in-depth audiological monitoring.

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