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Search Results: 1 - 10 of 8948 matches for " Heraldo Lorena;Sousa "
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Rela??o entre os achados da avalia??o audiométrica e das emiss?es otoacústicas em policiais militares
Guida, Heraldo Lorena;Sousa, Ariane Laís de;Cardoso, Ana Cláudia Vieira;
Arquivos Internacionais de Otorrinolaringologia , 2012, DOI: 10.7162/S1809-48722012000100010
Abstract: introduction: otoacoustic emissions can be an alternative for cochlear evaluation in noise induced hearing loss (nihl). objective: to investigate the correlation between the findings of audiometry results and distortion product otoacoustic emissions (dpoae) in the military police. method: from cross-sectional and retrospective study, 200 military police officers were submitted to audiological evaluation - pure tone audiometry and dpoae. results: considering the provisions of ordinance 19 of the labour department, the results were suggestive of induced hearing loss by high sound pressure levels in 58 individuals, distributed as follows: 28 (48.3%) bilateral cases and 30 (51.7%) unilateral cases, and 15 (25.85%) in each ear. the correlation between the audiometric and dpoae showed statistical significance in most of the frequencies tested in both ears, confirming that the greater the degree of hearing loss, the smaller the dpoae amplitudes. in addition, there was observed significant difference between the dpoaes amplitudes of normal subjects and listeners with hearing loss, confirming the lowering of responses in the group with hearing loss. conclusion: considering that the correlation between pure tone audiometry and dpoae, we conclude that otoacoustic emissions can be a complementary tool for the detection and control of nihl in military police.
Relationship between the findings of pure-tone audiometry and otoacoustic emission tests on military police personnel
Guida, Heraldo Lorena,Sousa, Ariane Laís de,Cardoso, Ana Cláudia Vieira
International Archives of Otorhinolaryngology , 2012,
Abstract: Introduction: Otoacoustic emissions can be an alternative for cochlear evaluation in noise induced hearing loss (NIHL). Objective: To investigate the correlation between the findings of audiometry results and distortion product otoacoustic emissions (DPOAE) in the military police. Method: from cross-sectional and retrospective study, 200 military police officers were submitted to audiological evaluation - pure tone audiometry and DPOAE. Results: considering the provisions of Ordinance 19 of the Labour Department, the results were suggestive of induced hearing loss by high sound pressure levels in 58 individuals, distributed as follows: 28 (48.3%) bilateral cases and 30 (51.7%) unilateral cases, and 15 (25.85%) in each ear. The correlation between the audiometric and DPOAE showed statistical significance in most of the frequencies tested in both ears, confirming that the greater the degree of hearing loss, the smaller the DPOAE amplitudes. In addition, there was observed significant difference between the DPOAEs amplitudes of normal subjects and listeners with hearing loss, confirming the lowering of responses in the group with hearing loss. Conclusion: considering that the correlation between pure tone audiometry and DPOAE, we conclude that otoacoustic emissions can be a complementary tool for the detection and control of NIHL in military police.
Morphological and Histochemical Analysis of the Human Vestibular Fold
Guida,Heraldo Lorena; Zorzetto,Neivo Luiz;
International Journal of Morphology , 2007, DOI: 10.4067/S0717-95022007000300010
Abstract: a morphological and histochemical study of the human vestibular fold was carried out using routine histological techniques. seven μm-thick histo logical sections stained with hematoxylin-eosin (he) and callej a showed the presence of elastic collagen fibers and seromucous glands in the vestibular fold. muscle fibers forming the ventricular muscle were also identified. ultrastructural analyses of the epithelial layer by scanning electron microscopy (sem) revealed ciliated cells and gland ducts opening on the epithelial surface. histochemical analyses were performed on ventricular muscles submitted to nicotinamide-adenine-dinucleotide tetrazolium reductase (nadh-tr), succinate dehydrogenase (sdh), and myofibrillar adenosine triphosphatase (matpase) reactions. based on these reactions, it was observed that the muscle is formed by three types of muscle fibers: slow-twitch oxidative (so), fast-twitch oxydative glycolytic (fog) and fast-twitch glycolytic (fg) fibers distributed in a mosaic pattern. the fiber frequency was 22.7%, 69.9% and 7.4%, respectively. the higher frequency of so and fog fibers characterized the muscle as having aerobic metabolism and resistance to fatigue. the ventricular muscle was considered fast. the study of the neuromuscular junctions performed after nonspecific esterase reaction showed that they are of the en-plaque type and have multiple occurrences in the ventricular muscle
Firefighters' noise exposure: a literature review
Taxini, Carla Linhares;Guida, Heraldo Lorena;
International Archives of Otorhinolaryngology , 2013, DOI: 10.7162/S1809-97772013000100014
Abstract: aim: to review the literature about the effects of environmental noise on the hearing ability of firefighters. method: the pubmed and scielo databases were searched and studies from 2002 to 2012 that included the keywords firefighters, noise, and hearing loss were identified. initially, 24 studies were selected, but only 10 met the inclusion criteria of investigating the effects of occupational noise on firefighters. results: only 2 (20%) studies quantified levels of sound pressure and performed audiological tests to identify associations with noise intensity and 3 (30%) questionnaire-based studies reported that these professionals are more susceptible to hearing loss. four (50%) studies found that noise exposure damages the auditory system in this population. discussion: these findings indicate that there is a necessity for preventive measures to be adopted by this population since it is considered to be at risk. conclusion: in recent years, there have been few studies of firefighters' exposure to occupational noise, but our findings show the importance of new studies that include proper means of quantifying their exposure to noise in different work environments, in order to identify possible adverse conditions as well as to aid in the diagnosis of hearing loss.
Hearing loss in patients with diabetes mellitus
Diniz, Thiago Hernandes;Guida, Heraldo Lorena;
Brazilian Journal of Otorhinolaryngology , 2009, DOI: 10.1590/S1808-86942009000400017
Abstract: the relationship between diabetes mellitus and hearing loss is described as 'controversial' in the literature, given that in the clinical realm many patients present dysacusis while others do not. aim: this study aims to investigate the relationship between hearing loss and diabetes mellitus and add to the knowledge being developed in this area. study design: cross-sectional clinical trial. materials and method: in our study we analyzed the medical charts of 50 adult patients of both genders, aged above 45 years, and diagnosed with diabetes mellitus, seen in our institution in 2006 and 2007, and compared them to the charts of 50 metabolic disease-free individuals. results: this study found statistically significant worse audiometric thresholds among patients with diabetes mellitus when compared to patients in the control group. conclusion: the results identified in this study point to a correlation between hearing loss and diabetes mellitus. this possibility should therefore be further investigated by health care workers providing care to patients with diabetes mellitus, in the form of closer follow-up on the auditory health of this patient group.
Morphological and Histochemical Analysis of the Human Vestibular Fold Análisis Morfológico e Histoquímico del Pliegue Vestibular Humano
Heraldo Lorena Guida,Neivo Luiz Zorzetto
International Journal of Morphology , 2007,
Abstract: A morphological and histochemical study of the human vestibular fold was carried out using routine histological techniques. Seven μm-thick histo logical sections stained with hematoxylin-eosin (HE) and Callej a showed the presence of elastic collagen fibers and seromucous glands in the vestibular fold. Muscle fibers forming the ventricular muscle were also identified. Ultrastructural analyses of the epithelial layer by scanning electron microscopy (SEM) revealed ciliated cells and gland ducts opening on the epithelial surface. Histochemical analyses were performed on ventricular muscles submitted to nicotinamide-adenine-dinucleotide tetrazolium reductase (NADH-TR), succinate dehydrogenase (SDH), and myofibrillar adenosine triphosphatase (mATPase) reactions. Based on these reactions, it was observed that the muscle is formed by three types of muscle fibers: slow-twitch oxidative (SO), fast-twitch oxydative glycolytic (FOG) and fast-twitch glycolytic (FG) fibers distributed in a mosaic pattern. The fiber frequency was 22.7%, 69.9% and 7.4%, respectively. The higher frequency of SO and FOG fibers characterized the muscle as having aerobic metabolism and resistance to fatigue. The ventricular muscle was considered fast. The study of the neuromuscular junctions performed after nonspecific esterase reaction showed that they are of the en-plaque type and have multiple occurrences in the ventricular muscle Fue realizado un estudio morfológico e histoquímico del pliegue vestibular humano a través de técnicas histológicas de rutina. Cortes histológicos de 7μm de grosor fueron te idos con HE y Calleja, los cuales revelaron la presencia de fibras colágenas, elásticas y glándulas seromucosas en el pliegue vestibular. También fueron identificadas fibras musculares que constituyen el músculo ventricular. Los análisis ultraestruturales de la capa epitelial realizados a través de microscopía electrónica de barrido, mostraron la presencia de células ciliadas, caliciformes y abertura de conductos glandulares en la superficie epitelial. Los análisis histoquímicos fueron realizados con músculos ventriculares sometidos a las reacciones NADH-TR, SDH y mATPasa. En base en estas reacciones se observó que el músculo está constituido por tres tipos de fibras musculares SO, FOG y FG, distribuidas en la forma de mosaico. La frecuencia de las fibras fue de 22,7%, 69,9% e 7,4%, respectivamente. La mayor frecuencia de fibras oxidativas SO+FOG caracterizó al músculo, con metabolismo aeróbico, resistente a la fatiga. El músculo ventricular fue considerado como rápido. El estudio de las
Firefighters' noise exposure: A literature review
Taxini, Carla Linhares,Guida, Heraldo Lorena
International Archives of Otorhinolaryngology , 2013,
Abstract: Aim: To review the literature about the effects of environmental noise on the hearing ability of firefighters. Method: The PubMed and Scielo databases were searched and studies from 2002 to 2012 that included the keywords firefighters, noise, and hearing loss were identified. Initially, 24 studies were selected, but only 10 met the inclusion criteria of investigating the effects of occupational noise on firefighters. Results: Only 2 (20%) studies quantified levels of sound pressure and performed audiological tests to identify associations with noise intensity and 3 (30%) questionnaire-based studies reported that these professionals are more susceptible to hearing loss. Four (50%) studies found that noise exposure damages the auditory system in this population. Discussion: These findings indicate that there is a necessity for preventive measures to be adopted by this population since it is considered to be at risk. Conclusion: In recent years, there have been few studies of firefighters' exposure to occupational noise, but our findings show the importance of new studies that include proper means of quantifying their exposure to noise in different work environments, in order to identify possible adverse conditions as well as to aid in the diagnosis of hearing loss.
Acoustic and psychoacoustic analysis of the noise produced by the police force firearms
Guida, Heraldo Lorena;Diniz, Thiago Hernandes;Kinoshita, Sérgio Koodi;
Brazilian Journal of Otorhinolaryngology , 2011, DOI: 10.1590/S1808-86942011000200005
Abstract: police officers are exposed to impact noise coming from firearms, which may cause irreversible injuries to the hearing system. aim: to evaluate the noise exposure in shooting stands during gunfire exercises, to analyze the acoustic impact of the noise produced by the firearms and to associate it with tonal audiometry results. study design: cross-sectional. materials and methods: to measure noise intensity we used a digital sound level meter, and the acoustic analysis was carried out by means of the oscillations and cochlear response curves provided by the praat software. 30 police officers were selected (27 males and 3 females). results: the peak level measured was 113.1 db(c) from a .40 pistol and 116.8 db(c) for a .38 revolver. the values obtained for oscillation and praat was 17.9±0.3 barks, corresponding to the rate of 4,120 and 4,580 hz. audiometry indicated greater hearing loss at 4,000hz in 86.7% of the cases. conclusion: with the acoustic analysis it was possible to show cause and effect between the main areas of energy excitation of the cochlea (praat cochlear response curve) and the frequencies of low hearing acuity.
Estudo comparativo da classifica??o do grau de perda auditiva em idosos institucionalizados
Kano, Cristhiane Emy;Mezzena, Lais Heloisa;Guida, Heraldo Lorena;
Revista CEFAC , 2009, DOI: 10.1590/S1516-18462009005000024
Abstract: purpose: to compare the audiological results for institutionalized elderly, taking into consideration two distinct classifications. methods: we evaluated 40 elderly of both genders, over 60-year-old, after assessing the clinical history and conduct of audiological otoscopy, we obtained the pure tone (via air and bone) of the individuals, by using the audiometer eymasa within an acoustic cabin. results: the classification used by recommendation 02/1 of bureau international d'audio phonologie, was more sensitive about hearing loss characterization in the elderly population. conclusion: the classification used by recommendation 02/1, is the one that better represents hearing loss degree in this population, since it takes in consideration in addition to the speech frequencies (500, 1k and 2khz), the frequency of 4khz for calculating the mean value.
Análise acústica em brinquedos ruidosos Acoustics analysis of the noisy toys
Carla Linhares Taxini,Sérgio Kodi Kinoshita,Heraldo Lorena Guida
Revista CEFAC , 2012, DOI: 10.1590/s1516-18462012005000066
Abstract: OBJETIVO: analisar os níveis de ruídos emitidos por brinquedos nacionalmente comercializados, utilizados por crian as de 1 a 5 anos; comparar os valores entre os brinquedos com e sem selo do Inmetro (Instituto Nacional de Metrologia, Normaliza o e Qualidade Industrial) e analisar o espectro acústico dos brinquedos, com o intuito de identificar a área da cóclea que pode ser mais afetada por esses ruídos. MéTODO: as medi es foram realizadas em 20 brinquedos sonoros (10 com o selo do Inmetro e 10 sem o selo) com o uso do decibelímetro digital em sala acusticamente tratada, e a análise dos sons emitidos pelos brinquedos foi realizada por meio do programa Praat. RESULTADOS: a intensidade do ruído dos brinquedos com o selo do Inmetro posicionados a 2,5 cm do equipamento variou de 61,50 a 91,55 dB(A) e 69,75 a 95,05 dB(C) e a referente à distancia de 25 cm variou entre 58,30 a 79,85 dB(A) e 62,50 a 83,65 dB(C). A intensidade do ruído dos brinquedos sem o selo do Inmetro a 2,5 cm variou entre 67,45 a 94,30 dB(A) e 65,4 a 99,50 dB(C) e na distancia de 25 cm registrou desde 61,30 a 87,45 dB(A) e 63,75 a 97,60 dB(C), portanto os achados demonstraram que existem brinquedos ruidosos que ultrapassam os valores recomendados pela legisla o vigente em ambos os grupos, com e sem selo do Inmetro. CONCLUS O: os brinquedos sem o selo do Inmetro apresentaram valores de intensidade significantemente maior em rela o ao outro grupo, oferecendo maior risco à saúde auditiva das crian as. PURPOSE: to analyze the levels of noise emitted by nationally-sold toys for use by children from 1 to 5 year old; to compare the values among the toys with and without the seal of Inmetro (National Institute of Metrology, Standardization and Industrial Quality) and to analyze the sound spectrum of toys, in order to identify the area of the cochlea that may be more affected by these noises. METHOD: measurements were performed on 20 sound toys (10 with the seal of the Inmetro and 10 without the seal) with the use of digital sound level meter in an acoustically treated room, and the sound analysis was performed using the Praat program. RESULTS: toys placed at 2.5 cm from the equipment with the seal of the Inmetro had an intensity ranging from 61.50 to 91.55 dB (A) and from 69.75 to 95.05 dB (C), positioned at 25 cm ranged from 58.3 to 79.85 dB (A) and from 62.50 to 83.65 dB (C). The results of the toys without warranty stamps placed at 2.5 cm ranged from 67.45 to 94.30 dB (A) and 65.4 to 99.50 dB (C) and the distance of 25 cm recorded from 61. 30 to 87.45 dB (A) and 63.75 to 97.60 dB (C), so tha
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