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PURPOSE: to analyze the knowledge, behaviors, and attitudes of students on noise. METHODS: We used an observational method study, in 32 Schools from Itajaí/Brazil, with a convenience sample, comprising 1,835 students, 45.7% females and 54.3% males, mean age of 11.53 ± 0.8 years, was conducted. The Portuguese version of Dangerous Decibels® questionnaire was applied. For the data analysis, descriptive and inferential statistics were used, significance level of 5%. RESULTS: A large part of the sample part of the sample had harmful hearing habits; 62.6% reported knowledge on the subject, but only 25.4% answered the questions on the theme correctly; 58.9% reported that they did not know how to protect hearing if necessary. Regarding sex and age: males have more hazardous hearing habits (p < 0.001) and tinnitus complaint (p<0.001) and females have more knowledge (p < 0.001) and the intent to wear hearing protection (p<0.001), greater intention to wear hearing protection among younger students (10 and 11 years old) (p < 0.001), and the older ones (12 to 16 years old) get more exposed to noise (p < 0.001), and there are more tinnitus complaints (p < 0.05) among them. CONCLUSION: A large part of the students in the study has hazardous noisy habits and scarce knowledge on the theme, with males and older subjects showing the worst attitudes and behaviors in face of the potential hearing risk caused by exposure to high noise levels.

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OBJECTIVE: To evaluate the effectiveness of hearing health education programs aimed at preventing noise-induced hearing loss (NIHL), of recreational and occupational origin, by means of a systematic review and meta-analysis. DESIGN: The search strategy was carried out in on five electronic databases, as well as referrals from experts. The risk of bias was judged, and the random effects meta-analysis was performed. The certainty of the evidence was assessed. STUDY SAMPLE: Effectiveness studies that used educational intervention in hearing health and prevention of NIHL were included. RESULTS: 42 studies were included. The Dangerous Decibels program was the only one that could be quantitatively analysed and showed improvement in the post-intervention period of up to one week [SMD = 0.60; CI95% = 0.38-0.82; I2 = 92.5%) and after eight weeks [SMD = 0.45; CI95% = 0.26-0.63; I2 = 81.6%) compared to the baseline. The certainty of evidence was judged as very low. CONCLUSIONS: The Dangerous Decibels program is effective after eight weeks of intervention. The other programs cannot be quantified. They still present uncertainty about their effectiveness. The level of certainty is still low for this assessment.

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This study aimed to scope the literature, identify knowledge gaps, appraise results, and synthesize the evidence on the audiological evaluation of workers exposed to solvents. We searched Medline, PubMed, Embase, CINAHL, and NIOSHTIC-2 up to March 22, 2021. Using Covidence, two authors independently assessed study eligibility, risk of bias, and extracted data. National Institute of Health Quality Assessment Tools was used in the quality evaluation of included studies; the Downs and Black checklist was used to assess the risk of bias. Of 454 located references, 37 were included. Twenty-five tests were studied: two tests to measure hearing thresholds, one test to measure word recognition in quiet, six electroacoustic procedures, four electrophysiological tests, and twelve behavioral tests to assess auditory processing skills. Two studies used the Amsterdam Inventory for Auditory Disability and Handicap. The quality of individual studies was mostly considered moderate, but the overall quality of evidence was considered low. The discrepancies between studies and differences in the methodologies/outcomes prevent recommending a specific test battery to assess the auditory effects of occupational solvents. Decisions on audiological tests for patients with a history of solvent exposures require the integration of the most current research evidence with clinical expertise and stakeholder perspectives.

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PURPOSE: To analyze the possible differences among the hearing of farmers and their families when compared to the population not exposed to pesticides. METHODS: Cross-sectional study with 70 smallholder family farmers (research group), with the mean age of 39.7 years, of both sexes and a mean of 23.7 years of exposure to pesticides. We included a control group with 71 participants of both sexes with the mean age of 39.5 years, not exposed to either noise or chemical substances, to compare the results. In stage 1, both groups were submitted to conventional and high-frequency audiometry, and acoustic immittance. In stage 2, only people with normal hearing were submitted to the evoked otoacoustic emissions and suppression effect on transient otoacoustic emissions. RESULTS: Significant differences were observed between the groups in the conventional pure-tone and in the high-frequency audiometry, as well as in the acoustic reflex. The most affected frequencies in the conventional pure-tone audiometry ranged from 3 to 6 kHz and, in the high-frequency audiometry, from 9000 to 11200 Hz. As for the transient otoacoustic emissions, the worse suppression effect results were found in the research group. CONCLUSION: There were differences among the hearing of family farmers and the control group. The conventional auditory thresholds are related to the group, age and sex. Farming is associated with impairments in the basal region of the cochlea, absence of acoustic reflex, reduced signal-to-noise ratio of the transient otoacoustic emissions, and dysfunction in the olivocochlear efferents of the auditory system.

OBJETIVO: Analisar as possíveis diferenças na audição de agricultores e suas famílias em comparação com população não exposta aos agrotóxicos. MÉTODO: Estudo transversal, com 70 participantes (grupo pesquisa), com média de idade de 39,7 anos, de ambos os sexos, proprietários de pequenos estabelecimentos agrícolas vinculados a agricultura familiar e tempo de exposição médio aos agrotóxicos de 23,7 anos. Um grupo controle com 71 participantes de ambos os sexos, sem exposição a ruído e agentes químicos, com idade média de 39,5 anos, foi incluído para a comparação dos resultados. Na etapa 1, ambos os grupos foram submetidos a audiometria convencional e de altas frequências e imitanciometria. Na etapa 2, somente os normoouvintes foram submetidos as emissões otoacústicas evocadas e efeito de supressão das emissões otoacústicas transientes. RESULTADOS: Observou-se diferenças significativas entre os grupos para audiometria tonal convencional e de altas frequências, e no reflexo acústico. As frequências mais afetadas na audiometria tonal convencional foram 3 a 6kHz e na audiometria de altas frequências foram as frequências de 9.000 e 11.200 Hz. Nas emissões otoacusticas transientes, observou-se no efeito de supressão piores resultados no grupo de pesquisa. CONCLUSÃO: Conclui-se que houve diferenças na audição dos agricultores familiares em comparação com o grupo controle. Os limiares auditivos convencionais estão relacionados em função do grupo, idade e gênero. O trabalho na agricultura está associado com o comprometimento na região basal da cóclea, à ausência de reflexo acústico, à redução da relação sinal/ruído das emissões otoacústicas transientes e à disfunção do sistema auditivo eferente olivococlear.

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INTRODUCTION: The aim of the study was to describe auditory and vestibular findings in Brazilian adults after COVID-19 in a municipality from the outskirts of the São Paulo state. METHODS: This was a transversal and exploratory study comprising sixteen participants infected by the SARS-CoV-2 virus, confirmed through RT-PCR detection, aged 20 to 55 years. Subjects underwent anamnesis, vestibular and auditory testing. Fisher's exact test was used to evaluate medication use, chemical and physical exposure, and occupational risk and McNemar test was used to compare auditory and vestibular symptoms pre- and post-COVID-19. RESULTS: Most patients were women (75%) and had been exposed to the virus over 90 days before testing (50%). 18.8% used hydroxychloroquine, 68.8% used ivermectin, and 87.5% used azithromycin to treat COVID-19. Auditory complaints were reported by 31.2% and vestibular by 18.7%. There was no statistical difference before and after the disease. Other reported symptomatology was hair loss, pain, fatigue, memory loss, difficulty to concentrate, and headache. Auditory findings were relevant in contralateral acoustic reflex, in the distortion-product otoacoustic emissions, and in the brainstem auditory evoked potential, characterizing a neurosensorial compromise. 43.74% of patients had altered vectonystagmography. When comparing both ears, no statistical relevance was found; however, when results were crossed with medication use and exposures, there was statistical relevance in the amplitude of the V wave for medications and absolute latency of the V wave to exposure to physical agents. DISCUSSION/CONCLUSION: This study demonstrated auditory and vestibular findings of neurosensorial nature, considering hearing and of a peripheral vestibulopathy. As it is a study of transversal nature, it is not possible to extend results to general population; yet it may be a finding to future studies.

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OBJECTIVES: Previous studies have demonstrated that individuals with hearing loss can internalize social stigmas, resulting in several self-perceived negative connotations, such as incompetence, cognitive impairment, and social disability. This systematic review aimed to investigate the impact of the social stigma associated with hearing loss on the self-stigma experienced by adults and older adults. DESIGN: Combinations of words and appropriate truncations were selected and adjusted specifically for each electronic database. The Population, Exposure, Comparator, Outcomes, and Study Characteristics strategy was used to delimit the scope of the review, bearing in mind the importance of a well-formulated research question. RESULTS: A total of 953 articles were retrieved from the final search of each database. Thirty-four studies were selected for full-text reading. Thirteen were excluded, and 21 studies were ultimately included in this review. The results of this review were divided into three themes: (1) impact of social stigmas on self-stigma, (2) effect of emotions on self-stigma, and (3) other factors that impact self-stigma. The themes were related to the relationship between the individual and social perceptions reported by the participants with respect to their hearing experiences. CONCLUSIONS: Our results suggest that the impact of social stigma associated with hearing loss on the self-stigma of adults and older adults is strongly associated with the effects of aging and hearing loss, which may lead to withdrawal, social segregation, and negative self-perception.

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PURPOSE: The aim of the present study is to translate, adapt, and cross-culturally validate the Brazilian Portuguese version of the questionnaire Hearing Protection Assessment Questionnaire (HPA). METHODS: The original instrument, developed in English, seeks to assess barriers and supports related to the use of hearing protection devices (HPD), as well as workers' knowledge, habits and attitudes towards occupational noise. The translation, adaptation, and cross-cultural validation of the questionnaire consisted of five steps: Translation of the questionnaire from English to Portuguese; 2) Reverse translation from Portuguese to English; 3) Analysis of the instrument by three experts in the field; 4) Pre-test of the questionnaire with ten workers; 5) Application of the instrument to 509 workers in a meatpacking industry after the pre-employment medical exam. RESULTS: The results indicate the construction and content validity of the Brazilian Portuguese version for use with a working population and its internal consistency. CONCLUSION: This study resulted in the translation, cultural adaptation, and validation of the Hearing Protection Assessment Questionnaire (HPA), in order to be used to assess the use of individual hearing protection in the occupational field, called Hearing Protection Assessment Questionnaire (HPA).

OBJETIVO: O objetivo do presente estudo foi traduzir, adaptar e validar transculturalmente a versão para língua portuguesa brasileira do questionário Hearing Protection Assessment Questionnaire (HPA). MÉTODO: O instrumento original, desenvolvido na língua inglesa, buscou avaliar as barreiras e suportes relacionados ao uso dos dispositivos de proteção auditiva (DPA), assim como o conhecimento, hábitos e atitudes dos trabalhadores frente ao ruído ocupacional. A tradução, adaptação e validação transcultural do questionário foi composta de cinco etapas: Tradução do questionário do inglês para o português; 2) Processo inverso de tradução do português para o inglês; 3) Análise do instrumento por três especialistas na área; 4) Pré-teste do questionário com 10 trabalhadores; 5) Aplicação do instrumento em 509 trabalhadores de uma indústria frigorífica após o exame admissional. RESULTADOS: os resultados indicam a validade de construção e conteúdo da versão em Português Brasileiro para o seu uso com uma população trabalhadora e a consistência interna do mesmo. CONCLUSÃO: Este estudo resultou na tradução, na adaptação cultural e validação do questionário Hearing Protection Assessment Questionnaire (HPA) com a finalidade de ser usado para avaliar o uso de proteção auditiva individual em âmbito ocupacional, denominado Questionário de Avaliação da Proteção Auditiva (APA).

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OBJECTIVES: To conduct critical assessment of the literature on the effects of cochlear implantation on adults' cognitive abilities. DESIGN: PubMed, Scopus, Lilacs, Web of Science, Livivo, Cochrane, Embase, PsycInfo, and grey literature were searched. Eligibility criteria: age 18 or over with severe-to-profound bilateral hearing loss, cochlear implantation, cognitive test before and after implantation. Risk of bias was assessed using ROB, ROBINS-I and MASTARI tools. Meta-analysis was performed. STUDY SAMPLE: Out of 1830 studies, 16 met the inclusion criteria. RESULTS: On AlaCog test, significant improvement was found after implantation [MD = -46.64; CI95% = -69.96 to -23.33; I2 = 71%]. No significant differences were found on the Flanker, Recall, Trail A and n-back tests (p > 0.05). For MMSE, no significance was found [MD 0.63; CI 95% = -2.19 to 3.45; I2 = 88%]. On TMT, an overall significant effect with a 9-second decrease in processing speed post-implantation [MD = -9.43; CI95% = -15.42 to -3.44; I2 = 0%]. CONCLUSION: Cognitive improvements after cochlear implantation may depend on time and the cognitive task evaluated. Well-designed studies with longer follow-up are necessary to examine whether cochlear implantation has a positive influence on cognitive abilities. Development of cognitive assessment tools to hearing-impaired individuals is needed.

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ABSTRACT COVID-19 is a viral infection that mainly affects the lower respiratory tract and with the affinity of the Spike protein to the Angiotensin 2 converter enzyme, inducing a prothrombotic state which may lead to compromising of the cardiovascular, central nervous, auditory, and vestibular systems. Viral infections knowingly affect vestibular and auditory systems. This study aimed to present the auditory and vestibular findings of a woman without otoneurological complaints, before the infection with SARS-CoV-2. This is a longitudinal case report, presenting the evolution of the otoneurological clinical picture accompanied by the results of a battery of tests. The results evidenced a unilateral, permanent, cochlear sensorineural hearing loss through altered otoacoustic emissions albeit with normal tonal thresholds, accompanied by peripheral vestibular hypofunction which worsened with time, without any other factor that could justify these findings. This study shows the importance of the complete protocol of tests performed over time for a better understanding of long-time implications of the SARS-CoV-2 infection.

RESUMO A COVID-19 é uma infecção viral que afeta, principalmente, a via respiratória inferior e, com a afinidade da proteína Spike com a Enzima Conversora de Angiotensina 2, gerando estado protrombótico, pode haver comprometimento dos sistemas cardiovasculares, nervoso central e renal. As infecções virais são capazes, também, de causar alterações nos sistemas auditivo e vestibular. O presente estudo teve por finalidade apresentar os achados auditivos e vestibulares de uma mulher sem queixas otoneurológicas, previamente à infecção pela SARS-CoV-2. Trata-se de um relato de caso longitudinal, com apresentação da evolução do quadro clínico otoneurológico acompanhado de uma bateria de exames. Os resultados evidenciaram o aparecimento de uma perda auditiva neurossensorial unilateral prevista por emissões otoacústicas alteradas na presença limiares tonais normais. Com a sequência de exames, observou-se piora dos limiares auditivos e alteração da função vestibular, de maneira permanente, sem qualquer outro histórico que pudesse justificar a instalação do quadro. Em quadros infecciosos faz-se importante a longitudinalidade de avaliação com uso de protocolo completo de exames para melhor compreensão dos efeitos tardios.

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RESUMO Objetivo O objetivo do presente estudo foi traduzir, adaptar e validar transculturalmente a versão para língua portuguesa brasileira do questionário Hearing Protection Assessment Questionnaire (HPA). Método O instrumento original, desenvolvido na língua inglesa, buscou avaliar as barreiras e suportes relacionados ao uso dos dispositivos de proteção auditiva (DPA), assim como o conhecimento, hábitos e atitudes dos trabalhadores frente ao ruído ocupacional. A tradução, adaptação e validação transcultural do questionário foi composta de cinco etapas: Tradução do questionário do inglês para o português; 2) Processo inverso de tradução do português para o inglês; 3) Análise do instrumento por três especialistas na área; 4) Pré-teste do questionário com 10 trabalhadores; 5) Aplicação do instrumento em 509 trabalhadores de uma indústria frigorífica após o exame admissional. Resultados os resultados indicam a validade de construção e conteúdo da versão em Português Brasileiro para o seu uso com uma população trabalhadora e a consistência interna do mesmo. Conclusão Este estudo resultou na tradução, na adaptação cultural e validação do questionário Hearing Protection Assessment Questionnaire (HPA) com a finalidade de ser usado para avaliar o uso de proteção auditiva individual em âmbito ocupacional, denominado Questionário de Avaliação da Proteção Auditiva (APA).

ABSTRACT Purpose The aim of the present study is to translate, adapt, and cross-culturally validate the Brazilian Portuguese version of the questionnaire Hearing Protection Assessment Questionnaire (HPA). Methods The original instrument, developed in English, seeks to assess barriers and supports related to the use of hearing protection devices (HPD), as well as workers' knowledge, habits and attitudes towards occupational noise. The translation, adaptation, and cross-cultural validation of the questionnaire consisted of five steps: Translation of the questionnaire from English to Portuguese; 2) Reverse translation from Portuguese to English; 3) Analysis of the instrument by three experts in the field; 4) Pre-test of the questionnaire with ten workers; 5) Application of the instrument to 509 workers in a meatpacking industry after the pre-employment medical exam. Results The results indicate the construction and content validity of the Brazilian Portuguese version for use with a working population and its internal consistency. Conclusion This study resulted in the translation, cultural adaptation, and validation of the Hearing Protection Assessment Questionnaire (HPA), in order to be used to assess the use of individual hearing protection in the occupational field, called Hearing Protection Assessment Questionnaire (HPA).

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RESUMO Objetivo Analisar as possíveis diferenças na audição de agricultores e suas famílias em comparação com população não exposta aos agrotóxicos. Método Estudo transversal, com 70 participantes (grupo pesquisa), com média de idade de 39,7 anos, de ambos os sexos, proprietários de pequenos estabelecimentos agrícolas vinculados a agricultura familiar e tempo de exposição médio aos agrotóxicos de 23,7 anos. Um grupo controle com 71 participantes de ambos os sexos, sem exposição a ruído e agentes químicos, com idade média de 39,5 anos, foi incluído para a comparação dos resultados. Na etapa 1, ambos os grupos foram submetidos a audiometria convencional e de altas frequências e imitanciometria. Na etapa 2, somente os normoouvintes foram submetidos as emissões otoacústicas evocadas e efeito de supressão das emissões otoacústicas transientes. Resultados Observou-se diferenças significativas entre os grupos para audiometria tonal convencional e de altas frequências, e no reflexo acústico. As frequências mais afetadas na audiometria tonal convencional foram 3 a 6kHz e na audiometria de altas frequências foram as frequências de 9.000 e 11.200 Hz. Nas emissões otoacusticas transientes, observou-se no efeito de supressão piores resultados no grupo de pesquisa. Conclusão Conclui-se que houve diferenças na audição dos agricultores familiares em comparação com o grupo controle. Os limiares auditivos convencionais estão relacionados em função do grupo, idade e gênero. O trabalho na agricultura está associado com o comprometimento na região basal da cóclea, à ausência de reflexo acústico, à redução da relação sinal/ruído das emissões otoacústicas transientes e à disfunção do sistema auditivo eferente olivococlear.

ABSTRACT Purpose To analyze the possible differences among the hearing of farmers and their families when compared to the population not exposed to pesticides. Methods Cross-sectional study with 70 smallholder family farmers (research group), with the mean age of 39.7 years, of both sexes and a mean of 23.7 years of exposure to pesticides. We included a control group with 71 participants of both sexes with the mean age of 39.5 years, not exposed to either noise or chemical substances, to compare the results. In stage 1, both groups were submitted to conventional and high-frequency audiometry, and acoustic immittance. In stage 2, only people with normal hearing were submitted to the evoked otoacoustic emissions and suppression effect on transient otoacoustic emissions. Results Significant differences were observed between the groups in the conventional pure-tone and in the high-frequency audiometry, as well as in the acoustic reflex. The most affected frequencies in the conventional pure-tone audiometry ranged from 3 to 6 kHz and, in the high-frequency audiometry, from 9000 to 11200 Hz. As for the transient otoacoustic emissions, the worse suppression effect results were found in the research group. Conclusion There were differences among the hearing of family farmers and the control group. The conventional auditory thresholds are related to the group, age and sex. Farming is associated with impairments in the basal region of the cochlea, absence of acoustic reflex, reduced signal-to-noise ratio of the transient otoacoustic emissions, and dysfunction in the olivocochlear efferents of the auditory system.

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ABSTRACT Purpose: to implement and assess hearing health interventions for school students, using Dangerous Decibels® Program activities in partnership with the Young Doctor Project, approaching noise-induced hearing loss prevention. Methods: the study encompassed 41 students, aged 12 to 14 years, from two schools in inland São Paulo and a social institution for public school students. Activities were based on the Young Doctor Project and the Dangerous Decibels® Brazil Program. The students answered a questionnaire administered in three situations: before the intervention (pre), right after the intervention (post), and 4 months after the intervention. The ANOVA, Friedman (p < 0.001), and Tukey´s (p < 0.05) statistical tests were used. Results: the 41 students who participated in the program were protagonists of knowledge, spreading the content they learned to another 954 students in the three schools through cultural workshops. The analysis of program effectiveness revealed improved results right after the intervention and 4 months afterward. Conclusion: combining these two programs encouraged the protagonism of young people to increase their involvement with the community. Moreover, the students changed their attitude toward potentially dangerous sounds.

RESUMO Objetivo: implementar e avaliar intervenções em saúde auditiva para escolares, utilizando as atividades do Programa Dangerous Decibels ®, em parceria com o Projeto Jovem Doutor, abordando aspectos preventivos da perda auditiva induzida por níveis de pressão sonora elevados. Métodos: participaram do estudo 41 escolares, com idade entre 12 e 14 anos, de duas escolas no interior de São Paulo e uma Instituição Social direcionada a estudantes de escolas públicas. As atividades foram baseadas no Projeto Jovem Doutor e no programa Dangerous Decibels ® Brasil. Os escolares responderam a um questionário aplicado em três situações, antes da intervenção (pré), logo após a intervenção (pós) e quatro meses após a intervenção. Foram utilizados os testes estatísticos ANOVA, FRIEDMAN; p<0,001 e TUKEY; p<0,05. Resultados: os 41 escolares que participaram do programa atuaram como protagonistas do conhecimento, multiplicando o conteúdo aprendido através das oficinas culturais, envolvendo 954 escolares das três escolas. Ao analisar a eficácia do programa, observou-se melhora nos resultados logo após a intervenção e, também, após 4 meses. Conclusão: a união desses dois programas incentivou o protagonismo juvenil, objetivando o maior envolvimento dos estudantes junto da comunidade. Foi possível observar a mudança de atitude dos escolares frente aos sons potencialmente perigosos.

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PURPOSE: To evaluate the caliber of an arterial micro-anastomosis in the young growing animal using a continuous suture technique. Additionally, late morphological changes and blood flows distal to the anastomosis were evaluated. METHODS: Seventy-four Wistar rats were submitted to laparotomy to access the aorta for blood flow measurement. The aorta was sectioned using microsurgery technique and an end-to-end anastomosis with continuous suture. After a period of six months to one year, the anastomosis was checked. RESULTS: Regarding the size of the aortas, comparing the pre- and postoperative values, there was an increase of 13.33% in adult animals and 25% in young animals, without any difference in the blood flows. CONCLUSIONS: The arteries of young rats show signs of growth at the site of the anastomosis performed with continuous suture.

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This study aimed to assess temporary and permanent auditory effects associated with occupational coexposure to low levels of noise and solvents. Cross-sectional study with 25 printing industry workers simultaneously exposed to low noise (<80 dBA TWA) and low levels of solvents. The control group consisted of 29 industry workers without the selected exposures. Participants answered a questionnaire and underwent auditory tests. Auditory fatigue was measured by comparing the acoustic reflex threshold before and after the workday. Workers coexposed to solvents and noise showed significantly worse results in auditory tests in comparison with the participants in the control group. Auditory brainstem response results showed differences in III−V interpeak intervals (p = 0.046 in right ear; p = 0.039 in left ear). Mean dichotic digits scores (exposed = 89.5 ± 13.33; controls = 96.40 ± 4.46) were only different in the left ear (p = 0.054). The comparison of pre and postacoustic reflex testing indicated mean differences (p = 0.032) between the exposed (4.58 ± 6.8) and controls (0 ± 4.62) groups. This study provides evidence of a possible temporary effect (hearing fatigue) at the level of the acoustic reflex of the stapedius muscle. The permanent effects were identified mainly at the level of the high brainstem and in the auditory ability of binaural integration.

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Introduction: Noise-induced hearing loss can be avoided by taking preventive measures. Objective: To assess the effectiveness of the Brazilian version of the Dangerous Decibels® program for noise-exposed workers, using the ecological model as an educational intervention plan. Method: Non-randomized interventional study with a quantitative, experimental trial design, conducted at a meatpacking company. The participants were divided into two groups-the first one (n = 132, divided into 6 subgroups) received the Dangerous Decibels® Brazil educational intervention (DDBEI) adapted to workers while the second group (n = 138, divided into 5 subgroups) received a conventional educational intervention (CEI). The interventions lasted 50 min. The Hearing Protection Assessment Questionnaire (HPA-5) was administered before and after the interventions. The five dimensions (attitude, behavior, knowledge, supports, and barriers) were compared using the Student's t-test for paired data (<0.05). Results: After both the DDBEI and CEI training, workers improved significantly in barriers, supports, knowledge, attitudes, and behavior around noise. By chance, the CEI group scored lower in all measures than the DDBEI group before training, and though both groups improved, the difference was maintained after training. Conclusion: The Brazilian version of the Dangerous Decibels® program for noise-exposed workers was effective, influencing positively the factors at different levels of the ecological model. Though the DDBEI was no more effective than the CEI, the CEI participants began at much lower levels, so the effectiveness of the DDBEI may have been underestimated.

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BACKGROUND: Hearing problems can have adverse effects on an individual's job performance, as well as on unemployment or underemployment and increased risk of stress-related sick leave. OBJECTIVE: To investigate hearing impairment among workers and satisfaction with the use of hearing aids. METHODS: Cross-sectional study with workers who are hearing aid users. Subjects underwent pure tone audiometry and answered the Hearing Handicap Inventory for Adults and the Satisfaction with Amplification in Daily Life questionnaires. RESULTS: Participants were 36 workers between 36 and 75 years old, with an average age of 53.47 years, 52.7% male and 47.3% female. There was a mild to moderate hearing handicap perception, with worse results for women in the emotional domain. As hearing loss increased, workers' frustration increased when talking to coworkers. Everyone was satisfied with the use of their hearing aids. Satisfaction increased with increasing age and decreased with increasing hearing loss. The greater the frustration when talking to co-workers, the lower the overall satisfaction with hearing aid use; the lower the satisfaction with the competence of the professional who assisted in adapting the hearing aid; the lower the satisfaction in environments with background noise and overall worse personal image. The worse the attitudes and emotional responses of workers regarding their hearing impairment, the lower the overall satisfaction with the hearing aid. CONCLUSIONS: Despite the use of hearing aids, workers perceive having a hearing impairment, especially women. As hearing loss and frustration in talking with co-workers increased, satisfaction decreased.

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Purpose: To evaluate the caliber of an arterial micro-anastomosis in the young growing animal using a continuous suture technique. Additionally, late morphological changes and blood flows distal to the anastomosis were evaluated. Methods: Seventy-four Wistar rats were submitted to laparotomy to access the aorta for blood flow measurement. The aorta was sectioned using microsurgery technique and an end-to-end anastomosis with continuous suture. After a period of six months to one year, the anastomosis was checked. Results: Regarding the size of the aortas, comparing the pre- and postoperative values, there was an increase of 13.33% in adult animals and 25% in young animals, without any difference in the blood flows. Conclusions: The arteries of young rats show signs of growth at the site of the anastomosis performed with continuous suture.

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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.

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BACKGROUND: Several health conditions among professional fishermen have been reported. Among the risks to the health of fishermen, it should be noted that high noise levels cause hearing loss and general health problems. OBJECTIVE: to investigate the effects of exposure to occupational noise on hearing in professional fishermen at the main large-scale commercial fishing center in Brazil. METHODS: A cross-sectional study, 466 Brazilian commercial fishermen participated in the study, all males, ages range 18-67 years. A total of 15 vessels were included in the study. The first phase involved assessment of the sound pressure levels (SPLs) in the vessels, the second phase involved the use of a questionnaire and audiological assessment. RESULTS: Most compartments registered SPLs greater than 80 dBA and the noisiest compartment was the engine-room, where the vessel pilot works. Among the fishermen, tinnitus was the most commonly reported symptom (48.63%). A higher prevalence of hearing loss was observed in engine-room keepers. Longer the length of time in service, and consequently, exposure to noise (in years), were associated with higher auditory thresholds. CONCLUSION: the tolerance limits to noise exposure were exceeded according to legislation. Fishing activities are associated with noise-induced hearing loss, with the risk increasing with the length of service.

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ABSTRACT The Purpose of this case report is to present four cases of tobacco growers with hearing loss due to occupational exposure to pesticides. A qualitative case study comprising three cases of sensorineural hearing loss with causal nexus (Cases 1, 2 and 4), and one (Case 3) of sensorineural hearing loss compatible with ototoxicity by pesticides, with causal nexus mainly based on minor neuropsychiatric disorders. The sample was composed of rural workers with health problems, in working age, having started working early in life, exposed to various pesticides, including organophosphates. The auditory and neurovegetative symptoms reported were noise discomfort (n = 2), speech perception difficulty (n = 3), dizziness (n = 2), and imbalance (n = 2). The pure-tone audiometry revealed a sensorineural hearing loss in one or more high frequencies, and one of the cases presented alteration in the brainstem auditory evoked potentials. There is evidence, in this study, of an association between hearing loss and work in tobacco growers exposed to pesticides, with peripheral auditory damage in four cases, and central damage in one of them. Thus, the need for a complete audiological evaluation of pesticide-exposed populations is highlighted.

RESUMO O objetivo desse relato de casos clínicos é apresentar quatro casos de fumicultores com perda auditiva devida à exposição laboral a agrotóxicos. Trata-se de um estudo de caso qualitativo, incluindo 3 casos de perda auditiva sensório-neural com nexo causal (Casos 1, 2 e 4) e um caso (Caso 3) de perda auditiva sensório-neural compatível com ototoxidade por agrotóxicos, com nexo baseado, sobretudo, nos transtornos neuropsiquiátricos menores. A casuística foi constituída por trabalhadores rurais com problemas de saúde, em idade produtiva, com início de atividade laboral precoce, expostos a múltiplos agrotóxicos, incluindo os organofosforados. Os sintomas auditivos e neurovegetativos relatados foram: desconforto a sons (n=2), dificuldade de compreender a fala (n=3), tontura (n=2) e desequilíbrio (n=2). A audiometria tonal revelou perda auditiva sensório-neural em uma ou mais frequências altas e um dos casos apresentou alteração no Potencial Evocado Auditivo de Tronco Encefálico. Foi evidenciada associação entre perda auditiva e o trabalho nos fumicultores expostos a agrotóxicos, com danos auditivos periféricos nos quatro casos e dano central em um dos casos, demonstrando a necessidade da avaliação audiológica completa para populações expostas a agrotóxicos.