Made available in DSpace on 2016-04-27T18:12:19Z (GMT). No. of bitstreams: 1 Michelle Barna Guzman.pdf: 1703779 bytes, checksum: 68352f5892cec094784243fe934f0b1c (MD5) Previous issue date: 2007-02-27 / Objective: Identify complaints related to the auditory health and annoyance caused by occupational and urban noises, in a firefighters corporation from Santo André county, and carry out a sound mapping from the surrounding area. Methods: A cross-sectional study was concerned in a population of 72 firefighters from the 8th brigade, being 28 from the administrative section, 20 from the occurrence center and 24 from the operational call center, using a protocol which consisted of 57 questions about personal data, auditory complaints, non-auditory complaints and annoyance. A sound mapping from the surrounding area was performed. Results: The sound pressure levels in the firefighter corporation area exceeded 67 dB (A), reaching more than 82 dB (A) in the avenue. Evaluating 72 firefighters, 95,8% are male. More than half (59,7%) have high school level. Most of them (83,3%) reported noisy work in their everyday life, being the urban noise reported as the major problem. When evaluated separately by performance section, the highest occurrence is urban noise (73,9%), firefighter vehicle noise (68,0%) and telephone noise (38,2%), in the administrative section, operational call center and occurrence center, respectively. The noisiest periods were in the morning and afternoon (45,5%), interfering in work activities for 65% of the interviewed. The most mentioned alterations were concentration (43,4%) and hearing (26,4%). Related to the hearing perception, most of them (55,6%) reported good hearing. When it comes to chemical exposure products, 55,6% reported exposure during work activities. Conclusions: Interviewed firefighters, besides noisy exposure deriving from work activities, like vehicles, walk-talk radios and telephones, are liable to consequences from the urban noise, which disturbs work activities and also causes health problems / Objetivo: Identificar queixas relacionadas à saúde auditiva e incômodo para o ruído ocupacional e urbano, em uma corporação de bombeiros do município Santo André-SP e mapeamento sonoro do entorno. Método: Tratou-se de um estudo epidemiológico transversal de inquérito na população de 72 bombeiros do 8° Grupamento sendo 28 do setor administrativo, 20 do centro de ocorrência e 24 do atendimento operacional, por meio da aplicação de um protocolo composto por 57 questões referentes a dados pessoais, queixas auditivas, não auditivas e incômodo. Foi realizado, também, o mapeamento sonoro do local. Resultados: Os níveis de pressão sonora no local da corporação ultrapassaram 67 dB (A), chegando a níveis maiores de 82 dB (A) na avenida. Dos 72 sujeitos, 95,8% são do sexo masculino. Mais da metade (59,7%) apresentou como nível de escolaridade o ensino médio. A maioria (83,3%) dos sujeitos relatou o cotidiano ruidoso no trabalho, sendo o ruído urbano citado como maior fonte. Quando vistos separadamente por área de atuação, a maior ocorrência é para ruído urbano (73,9%), ruído da viatura (68,0%) e ruído do telefone (38,2%) para o setor administrativo, divisão operacional e atendimento de ocorrências respectivamente. O período mais crítico foi manhã e tarde (45,5%), interferindo as atividades no trabalho para 65% dos sujeitos. As alterações mais citadas foram concentração (43,4%) e ouvir (26,4%). Sobre a percepção da audição, a maior parte (55,6%) referiu audição boa. Em relação à exposição a produtos químicos, 55,6% relatou exposição durante o trabalho. Conclusões: Os bombeiros analisados, além da exposição a ruídos provenientes da ocupação no ambiente de trabalho como viaturas, rádios de comunicação e telefones, também sofrem as conseqüências do ruído urbano, que altera atividades no trabalho e provoca distúrbios que foram percebidos também na saúde

L’imagerie par résonance magnétique (IRM) est l’une des techniques les plus utilisées en neurosciences. Malheureusement, elle implique une exposition à des niveaux de bruit importants. Cette exposition peut entraîner des effets temporaires ou permanents sur l’audition, surtout lorsqu’elle est prolongée ou répétée. Plusieurs inconnus subsistent au sujet des risques pour l’audition de sujets subissant des examens en IRM à répétition. L’objectif de ce projet était de suivre six participants de recherche subissant des examens IRM hebdomadaires et d’évaluer sur une base régulière l’évolution de leur audition. L’audition des participants a été testée périodiquement sur une période d’un an et demi. Des valeurs de référence ont été récoltées pour chacun des tests avant le début de ce projet. Des séances de tests auditifs ont ensuite été planifiées immédiatement avant et après un scan ainsi qu’à la suite d’un délai variant entre deux et sept jours après un scan. Un article scientifique présentant les résultats les plus importants de ce projet a été rédigé. Il comporte les résultats à deux des tests administrés aux participants: l’audiométrie par tons purs et les émissions otoacoustiques par produit de distorsion. Aucun effet de l’exposition au bruit du scanneur n’a été révélé par ces tests. / Magnetic resonance imaging (MRI) is one of the most commonly used tools in neuroscience. However, it implies exposure to high noise levels. It is well known that exposure to noise can lead to temporary or permanent hearing damages, especially when the exposure is long or repeated. Little is known about the hearing risks of people undergoing several MRI examinations, especially in the context of prolonged longitudinal studies. The goal of this research project was to follow six research participants undergoing weekly MRI scan sessions and test the evolution of their auditory health on a regular basis. The participants’ hearing was tested periodically, over a period of a year-and-a-half. First, baseline values were acquired for each of the hearing tests before the beginning of this research project. Hearing tests were then scheduled immediately before/after a scan and with a delay between two and seven days after a scan. A scientific publication was written outlying the main results regarding two of the administered tests: pure-tone audiometry and distortion product otoacoustic emissions. No consistent impacts of the scanner noise exposure were found for those two tests.