ABSTRACT
Introdução: O zumbido é uma ilusão auditiva consciente, uma sensação sonora não relacionada com uma fonte externa de estimulação. Objetivos: Caracterizar a Acufenometria, Limiar Diferencial de Mascaramento, o questionário de qualidade de vida Inventário de Desvantagem do Zumbido e Potencial Auditivo de Tronco Encefálico em adultos normo-ouvintes com zumbido, com a finalidade de comparar seus achados. Método: Vinte indivíduos do sexo feminino e masculino, entre 20 e 60 anos de idade, normo-ouvintes com queixa de zumbido, foram submetidos ao Acufenometria, Limiar Diferencial de Mascaramento, Inventário de Desvantagem do Zumbido e Potencial Evocado Auditivo de Tronco Encefálico. Resultados: AAcufenometriarevelou que o pitch médio foi de 4,3 KHz à orelha direita e 4,6 KHz à orelha esquerda. O loudness médio foi de 21,7 dBNS à orelha direita e 23,5 dBNS à orelha esquerda. O Limiar Diferencial de Mascaramento médio mostrou-se alterado. O Inventário de Desvantagem do Zumbido médio correspondeu à classificação de grau leve. O Potencial Evocado Auditivo de Tronco Encefálico apresentou parâmetros dentro da normalidade bilateralmente. Conclusão: Constatou-se que adultos normo-ouvintes com queixa de zumbido apresentam zumbido de pitch agudo bilateral com discreto impacto na qualidade de vida, condução adequada das vias auditivas até o tronco encefálico e comprometimento na identificação de sons na presença de ruído, demonstrando que o zumbido pode ter repercussões nas habilidades auditivas centrais. (AU)
Introduction: Tinnitus is a conscious auditory illusion, a sound perception unrelated to any external stimulus source. Objectives: To characterize the Acuphenometry, Masking Level Difference, the quality of life questionnaire Tinnitus Handicap Inventory and Auditory Brainstem Response in normal hearing adults with tinnitus, with the purpose of comparing the findings. Method: Twenty female and male individuals, between 20 and 60 years of age, normal hearing with complaints of tinnitus, underwent Acuphenometry, Masking Level Difference, Tinnitus Handicap Inventory and Auditory Brainstem Response. Results: The Acuphenometry showed the average pitch was 4.3 KHz to the right ear and 4.6 KHz to the left ear. The average loudness was 21.7 dBSL to the right ear and 23.5 dBs to the left ear. The average Masking Level Difference was altered. The average Tinnitus Handicap Inventory corresponded to the classification of mild grade. Auditory Brainstem Response showed parameters within normal range bilaterally. Conclusion: It was found that normal hearing adults with tinnitus complaints have bilateral acute pitch tinnitus with a slight impact on quality of life, appropriate conduction of auditory pathways to the brainstem and impaired identification of sounds in the presence of noise, demonstrating that tinnitus can have repercussions on central auditory skills. (AU)
Introducción: El tinnitus es una ilusión auditiva consciente, una sensación de sonido no relacionada con una fuente externa de estimulación. Objetivos: Caracterizar la coincidencia de tono y volumen, el umbral de enmascaramiento diferencial, el inventario de minusvalía para acúfenos y el potencial auditivo del tronco encefálico en adultos normoyentes con acúfenos, con el fin de comparar sus hallazgos. Método:Veinte sujetos masculinos y femeninos, con edades entre 20 y 60 años, audición normal con tinnitus, fueron sometidos a acúfenos, Umbral de Enmascaramiento Diferencial, Inventario de Desventajas de Tinnitus y Potenciales Evocados Auditivos del Tronco Encefalico. Resultados: La combinación de tono y volumen reveló que el tono promedio era de 4,3 KHz en el oído derecho y de 4,6 KHz en el oído izquierdo. Mientras que el volumen medio fue de 21,7 dBNS para el oído derecho y de 23,5 dBNS para el oído izquierdo. Se modificó el umbral diferencial de enmascaramiento promedio. El Inventario de Desventajas de Tinnitus promedio correspondió a la clasificación de grado leve. El Potenciales Evocados Auditivos del Tronco Encefalico presentó parámetros dentro del rango normal bilateralmente. Conclusión:Se encontró que los adultos normooyentes con quejas de tinnitus presentan tinnitus de tono alto bilateral con leve impacto en la calidad de vida, conducción adecuada de las vías auditivas al tronco encefálico y deterioro en la identificación de sonidos en presencia de ruido, demostrando que Tinnitus puede tener repercusiones en las habilidades auditivas centrales. (AU)
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Tinnitus/etiology , Hearing Tests , Perceptual Masking , Auditory Threshold , Surveys and Questionnaires , Evoked Potentials, Auditory, Brain StemABSTRACT
Abstract Introduction The auditory structures of the brainstem are involved in binaural interaction, which contributes to sound location and auditory figure-background perception. Objective To investigate the performance of young adults in the masking level difference (MLD) test, brainstem auditory-evoked potentials (BAEPs) with click stimulus, and frequency-following response (FFR), as well as to verify the correlation between the findings, considering the topographic origin of the components of these procedures. Methods A total of 20 female subjects between 18 and 30 years of age, with normal hearing and no complaints concerning central auditory processing underwent a basic audiological evaluation, as well as the MLD test, BAEP and FFR. Results The mean result on the MLD test was of 10.70 dB. There was a statistically significant difference in the absolute latencies of waves I, III and V in the BAEPs of the ears. A change in the FFR characterized by the absence of the C, E and F waves was noticed. There was a statistically significant difference in the positive correlation of wave V in the BAEPs with the MLD. There was a statistically significant difference in the positive correlation of the mean MLD and the V, A and F components of the FFR. Conclusion The mean MLD was adequate. In the BAEPs, we observed that the click stimulus transmission occurred faster in the right ear. The FFR showed absence of some components. The mean MLD correlated positively with the BAEPs and FFR.
ABSTRACT
El diagnóstico de la Neuropatía Diabética Periférica es tardío. Identificar maniobras semiológicas que permitan el diagnóstico precoz de la neuropatía diabética. Estudio de casos, analítico, transversal y operacional: personas sanas, prediabéticos, diabéticos de reciente diagnóstico y diabéticos de más de 5 años de diagnóstico. Se realizaron 2 evaluaciones: la primera por dos investigadores a ciegas que evaluaron: sensibilidad mecánica, reflejos osteotendinosos y palestesia. También se evaluación de la córnea con Rosa de Bengala y se aplicó el Cuestionario DN4. Segunda Evaluación: von Frey. Biopsia de Piel: será tratada con inmunohistoquímica de campo claro. Muestra de 25 personas. El DN4, obtuvo 14 personas con dolor neuropático. La tinción con Rosa de Bengala obtuvo 7 pacientes con ojo seco y una diabética con más de 5 años de diagnóstico con alteración corneal. En la evaluación con von Frey hubo 3 pacientes con zonas sin respuesta al microfilamento de 10 g. La inmunohistoquímica demostró que el número y densidad de fibras nerviosas tuvo un promedio de 7 fibras/campo en sanos y a partir de los prediabéticos disminuyó desde 4,4 fibras/campo. El ojo seco justifica la evaluación periódica del internista. La evaluación de la sensibilidad con los filamentos de von Frey señala que el monofilamento utilizado individualmente tiene menor eficiencia diagnóstica. La biopsia demostró una capacidad diagnóstica precoz de esta, aún en ausencia de síntomas. La biopsia de piel con cuantificación del número y densidad de fibras, es útil en la identificación temprana de lesión de fibras C y se comporta como método de pesquisa.
The diagnosis of Diabetic Peripheral Neuropathy is made lately. To identify semiological maneuvres that allow early diagnosis of diabetic neuropathy. Case studie, analitic, transversal and operational, without therapeutic intervention in healthy, prediabetic, diabetic and newly diagnosed diabetes over 5 years of diagnosis. The First Assessment was: conducted by two blinded researchers measuring mechanical sensitivity, tendon reflexes, and palesthesia. Von Frey 3) Skin biopsy: the cornea Bengal Rose and DN4 Questionnaire. The second assessment was done with brightfield immunohistochemistry. The sample consisted of 25 persons. The DN4 had 14 people with neuropathic pain. Staining with Rose Bengal scored 7 persons. The second Assessment was done in patients with dry eye and over 5 years of diagnosis of corneal disorder. The evaluation with von Frey 3 patients with no response areas were obtained at 10 g microfilament. Immunohistochemistry showed that the number and density of nerve fibers had an average of 7 fibers in healthy and from prediabetic decreased to 4.4 fibers. The Dry eye justifies the periodic evaluation by the internist. The evaluation of sensitivity with von Frey hairs used indicate that the monofilament has a lower diagnostic efficiency individually. The biopsy revealed an early diagnostic capacity in this condition in the absence of symptoms. Skin biopsy with quantification of the number and density of nerve fibers is useful in early identification of C fiber damage and behaves like screening method.