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      Correlación del umbral de potencial evocado auditivo de tronco cerebral con el umbral de potencial evocado auditivo de estado estable en pacientes hipoacúsicos Translated title: Correlation of the threshold of auditory brainstem response with the auditory steady state response in hearing loss patients

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          Abstract

          RESUMEN Introducción: El avance de los dispositivos de ayuda auditiva han ocasionado a su vez el desarrollo de las técnicas electrofisiológicas destinadas al diagnóstico de la sordera. Objetivo: Comparar los umbrales del potencial evocado auditivo de tronco cerebral (PEATC) y del potencial evocado auditivo de estado estable (PEAee) en niños con hipoacusia. Material y método: Estudio observacional descriptivo de una serie de casos de pacientes de 0 a 6 años de edad con hipoacusia, diagnosticada mediante PEATC y PEAee. Se compara el umbral de la onda V en el PEATC y la media del valor registrado en 2 y 4 kHz en el PEAee mediante la correlación de Spearman y se utiliza el índice Kappa para conocer la concordancia entre las mismas. Resultados: Se diagnosticaron 89 oídos con hipoacusia, 23 con hipoacusia profunda. Se obtiene un valor de rho de Spearman de 0,64 (p <0,001). El índice de Kappa obtenido es del 0,59 con un IC al 95% entre 0,52 y 0,66 (p <0,001). La diferencia media de umbrales entre el PEAee y el PEATC es de −2,42 dB con una desviación estándar de 13,11 dB. Conclusión: Se obtiene un grado de relación y acuerdo moderado entre las pruebas, influido sobre todo por los pacientes con hipoacusia profunda. Los umbrales del PEAee son mayores que los del PEATC.

          Translated abstract

          ABSTRACT Introduction: The advancement of hearing aid devices has led to the development of electrophysiological techniques for the diagnosis of hearing loss. Aim: To compare the thresholds of auditory brainstem response (ABR) with the auditory steady state response (ASSR) in hearing loss children. Material and method: A descriptive observational study of cases from 0 to 6 years of age with hearing loss, diagnosed by ABR and ASSR was performed. The Spearman correlation test is used to compare the threshold obtained for the V wave in the ABR and the average value recorded in 2 and 4 kHz in the ASSR. To know the concordance between the two tests, the Kappa index is used. Results: 89 ears were diagnosed with hearing loss, 23 with profound hearing loss. The Spearman's rho value is 0.64 (p <0.001). The Kappa index obtained is 0.59 with a 95% CI between 0.52 and 0.66 (p <0.001). The mean difference thresholds between the ASSR and the ABR is −2.42 dB with a standard deviation of 13.11 dB. Conclusion: A moderate relationship and agreement between the tests is obtained, influence especially in patients with profound hearing loss. The thresholds of ASSR are higher than those of ABR.

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          Frequency-specific audiometry using steady-state responses.

          To evaluate the audiometric usefulness of steady-state responses to multiple simultaneous tones, amplitude-modulated at 75 to 110 Hz. Steady-state responses to multiple tones amplitude-modulated at different rates between 75 and 110 Hz and presented simultaneously were recorded at different intensities in normal adults, well babies, normal adults with simulated hearing loss, and adolescents with known hearing losses. Response thresholds were compared with behavioral thresholds. In normal adults the thresholds for steady-state responses to tones of 0.5, 1, 2, and 4 kHz were 14 +/- 11, 12 +/- 11, 11 +/- 8, and 13 +/- 11 dB, respectively, above behavioral thresholds for air-conducted stimuli, and 11 +/- 5, 14 +/- 8, 9 +/- 8, and 10 +/- 10 dB above behavioral thresholds for bone-conducted stimuli. In well babies tested in a quiet environment, the thresholds were 45 +/- 13, 29 +/- 10, 26 +/- 8, and 29 +/- 10 dB SPL. In adolescents with known hearing losses, the steady-state responses thresholds predict behavioral thresholds with correlation coefficients (r) of 0.72, 0.70, 0.76, and 0.91 at 0.5, 1, 2, and 4 kHz, respectively. Steady-state responses to tone amplitude-modulated at 75 to 110 Hz can be used for frequency-specific objective audiometry. The multiple-stimulus technique allows thresholds to be estimated for eight different stimuli at the same time.
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            Auditory steady-state responses.

            The auditory steady state response (ASSR) is an auditory evoked potential (AEP) that can be used to objectively estimate hearing sensitivity in individuals with normal hearing sensitivity and with various degrees and configurations of sensorineural hearing loss (SNHL). For this reason, many audiologists want to learn more about the stimulus and recording parameters used to successfully acquire this response, as well as information regarding how accurately this response predicts behavioral thresholds across various clinical populations.
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              Cochlear implantation in the very young child: Long-term safety and efficacy.

              Widespread universal newborn hearing screening has led to increased identification of infant hearing loss. Supported by improved diagnostic tools allowing more definitive diagnosis of profound sensorineural hearing loss in young children, cochlear implantation in children <12 months of age is now common. Literature supports short-term safety and improved auditory outcomes in these young children, however long-term data is lacking. The study examines issues of long-term safety and efficacy in cochlear implant patients implanted <1 year of age. Retrospective chart review. Fifty children who received cochlear implants before 1 year of age were followed for up to 7 years. Age at implantation ranged from 5 to 11 months with a mean of 9.1 months. Three patients had simultaneous bilateral implantation at 8 to 9 months of age. Medical records were reviewed for complications incurred during length of device usage, including time of complication, management, and resolution. Auditory assessment included both the Infant-Toddler Meaningful Auditory Integration Scale and tests of speech perception. All 50 patients had full insertions of the electrode array. There were a total of eight complications (16%) in seven patients, three major (6%) and five minor (10%), which occurred at or before 10 months postoperatively. There were no perioperative anesthetic complications. Cochlear implantation in children <12 months of age is safe and efficacious over an extended period of time. Rates and nature of both major and minor complications are comparable to studies in adults and older children and support continued monitoring of these patients over the long-term.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                orl
                Revista de otorrinolaringología y cirugía de cabeza y cuello
                Rev. Otorrinolaringol. Cir. Cabeza Cuello
                Sociedad Chilena de Otorrinolaringología, Medicina y Cirugía de Cabeza y Cuello (Santiago, , Chile )
                0718-4816
                September 2019
                : 79
                : 3
                : 299-306
                Affiliations
                [2] Murcia orgnameUniversidad Católica de San Antonio orgdiv1Hospital Perpetuo de Socorro orgdiv2Servicio de Otorrinolaringología España
                [3] Cartagena orgnameHospital General Universitario Santa Lucía orgdiv1Sección de Neuropediatría orgdiv2Servicio de Pediatría España
                [4] Murcia orgnameUniversidad Católica de San Antonio orgdiv1Hospital Universitario Los Arcos del Mar Menor orgdiv2Servicio de Otorrinolaringología España
                [1] Cartagena orgnameHospital General Universitario Santa Lucía orgdiv1Servicio de Otorrinolaringología España
                Article
                S0718-48162019000300299
                b1ff8020-38c0-4958-9f3a-a8881810eaca

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 30 March 2019
                : 07 May 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 19, Pages: 8
                Product

                SciELO Chile

                Categories
                ARTÍCULOS DE INVESTIGACIÓN

                evoked potentials,células receptoras sensoriales,tronco cerebral,potenciales evocados auditivos,Potenciales de acción,sensory receptor cells,brainstem,auditory,Actions potentials

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