ABSTRACT
UNLABELLED: Profound hearing loss is a disability that affects personality and when it involves teenagers before language acquisition, these bio-psychosocial conflicts can be exacerbated, requiring careful evaluation and choice of them for cochlear implant. AIM: To evaluate speech perception by adolescents with profound hearing loss, users of cochlear implants. STUDY DESIGN: Prospective. MATERIALS AND METHODS: Twenty-five individuals with severe or profound pre-lingual hearing loss who underwent cochlear implantation during adolescence, between 10 to 17 years and 11 months, who went through speech perception tests before the implant and 2 years after device activation. For comparison and analysis we used the results from tests of four choice, recognition of vowels and recognition of sentences in a closed setting and the open environment. RESULTS: The average percentage of correct answers in the four choice test before the implant was 46.9% and after 24 months of device use, this value went up to 86.1% in the vowels recognition test, the average difference was 45.13% to 83.13% and the sentences recognition test together in closed and open settings was 19.3% to 60.6% and 1.08% to 20.47% respectively. CONCLUSION: All patients, although with mixed results, achieved statistical improvement in all speech tests that were employed.
Subject(s)
Cochlear Implants , Hearing Loss, Sensorineural/surgery , Speech Discrimination Tests , Speech Perception/physiology , Adolescent , Child , Cognition/physiology , Female , Humans , Male , Prospective Studies , Severity of Illness Index , Time FactorsABSTRACT
Profound hearing loss is a disability that affects personality and when it involves teenagers before language acquisition, these bio-psychosocial conflicts can be exacerbated, requiring careful evaluation and choice of them for cochlear implant. AIM: To evaluate speech perception by adolescents with profound hearing loss, users of cochlear implants. STUDY DESIGN: Prospective. MATERIALS AND METHODS: Twenty-five individuals with severe or profound pre-lingual hearing loss who underwent cochlear implantation during adolescence, between 10 to 17 years and 11 months, who went through speech perception tests before the implant and 2 years after device activation. For comparison and analysis we used the results from tests of four choice, recognition of vowels and recognition of sentences in a closed setting and the open environment. RESULTS: The average percentage of correct answers in the four choice test before the implant was 46.9 percent and after 24 months of device use, this value went up to 86.1 percent in the vowels recognition test, the average difference was 45.13 percent to 83.13 percent and the sentences recognition test together in closed and open settings was 19.3 percent to 60.6 percent and 1.08 percent to 20.47 percent respectively. CONCLUSION: All patients, although with mixed results, achieved statistical improvement in all speech tests that were employed.
A surdez profunda é uma deficiência que afeta a personalidade e quando se trata de adolescentes com surdez profunda pré-lingual, esses conflitos biopsicossociais são exacerbados, necessitando de cautela na avaliação e escolha destes candidatos ao implante coclear. OBJETIVO: Avaliar a percepção de fala em adolescentes portadores de surdez pré-lingual do tipo neurossensorial grave a profunda bilateral com implante coclear. FORMA DE ESTUDO: Prospectivo. CASUÍSTICA E MÉTODO: Vinte e cinco indivíduos com surdez pré-lingual, sensório-neural, de grau severo ou profundo, que foram submetidos ao implante coclear na adolescência, definida entre 10 a 17 anos e 11 meses, passaram por testes de percepção de fala pré-implante e 2 anos após a ativação do dispositivo. Para análise, utilizamos os resultados dos testes de four choice, reconhecimento de vogais e sentenças em conjunto fechado e aberto. RESULTADOS: A média da porcentagem de acertos do teste de four choice antes do implante coclear era de 46,9 por cento e após, 2 anos de uso do dispositivo, a média foi para 86,1 por cento; no teste de vogais, a média foi de 45,13 por cento a 83,13 por cento; e no teste de sentenças em conjunto fechado e aberto foi de 19,3 por cento a 60,6 por cento e de 1,08 por cento a 20,47 por cento, respectivamente. CONCLUSÃO: Embora com resultados heterogêneos, todos obtiveram melhora estatística nos testes aplicados.
Subject(s)
Adolescent , Child , Female , Humans , Male , Cochlear Implants , Hearing Loss, Sensorineural/surgery , Speech Discrimination Tests , Speech Perception/physiology , Cognition/physiology , Prospective Studies , Severity of Illness Index , Time FactorsABSTRACT
UNLABELLED: Electrically Evoked Compound Action Potential is a measure of synchronous cochlear nerve fibers activity elicited by electrical stimulation of the cochlear implant. The electrophysiological nerve responses may contribute to explain the variability in individual performance of cochlear implant recipients. AIM: To compare speech perception tests performances of cochlear implant users according to the presence or absence of intraoperative neural telemetry responses. MATERIAL AND METHOD: Prospective study design with 100 "Nucleus 24" cochlear implant users divided in two groups according to the presence or absence of intraoperative neural telemetry responses. Speech perception tests were performed after 6 months of continuous use of the device and compared among groups. RESULTS: Intraoperative action potentials were observed in 72 % of individuals. Open-set sentence test results were better in implant users who had neural telemetry responses when compared to implant users in whom this potential was absent (averages 82.8 % versus 41 %, p = 0.005). There was a strong association between post meningitis-related deafness and absence of intraoperative potentials. CONCLUSION: The absence of intraoperative neural telemetry responses was associated with worse performances in speech perception tests and meningitis as etiology of deafness. On the other hand, the presence of these potentials suggests excellent prognosis.
Subject(s)
Cochlear Implantation , Deafness/surgery , Evoked Potentials, Auditory/physiology , Speech Perception/physiology , Adolescent , Adult , Auditory Threshold/physiology , Child , Child, Preschool , Electric Stimulation , Female , Humans , Male , Prospective StudiesABSTRACT
UNLABELLED: Cochlear implantation has been recommended for children under 24 months of age. The use of objective measures is needed to help speech processor programming. The electrically evoked compound potential (EAP), which can be assessed by neural response telemetry (NRT), is one of those objective measures. AIM: to determine how often the EAP can be recorded by NRT system during surgery and to describe the responses. STUDY DESIGN: Clinical with transversal cohort. MATERIAL AND METHOD: The impedances and NRT were measured in a group of 17 Nucleus 24 implant users. The responses were analyzed and compared to the etiology, hearing loss duration and electrode array position. RESULTS: The EAP was easily recorded in the apical electrodes and, in otosclerosis and meningitis cases the EAP threshold was higher than in the other etiology cases. CONCLUSIONS: The NRT can be found in 82% of the cases during surgery. The responses obtained may vary according to etiology and the position of electrodes along the cochlea.
Subject(s)
Action Potentials/physiology , Cochlear Implants , Deafness/physiopathology , Evoked Potentials, Auditory/physiology , Telemetry , Adolescent , Adult , Auditory Perception/physiology , Child , Child, Preschool , Cochlear Implantation , Deafness/etiology , Deafness/surgery , Electric Stimulation , Electrodes , Female , Humans , Male , Middle Aged , Neural Pathways , Speech Perception/physiologyABSTRACT
Introduçäo: alguns estudos relatam a importância da aplicaçäo clínica no acompanhamento da funçäo coclear em tratamentos com medicaçöes ototóxicas ou em exposiçäo a agentes nocivos à cóclea. Pesquisas sobre a reprodutibilidade das emissöes otoacústicas foram realizadas para validar sua utilizaçäo na monitorizaçäo da funçäo coclear, entretanto a experiência clínica nos mostra que os valores de variaçäo entre teste-reteste näo coincidem com os descritos na literatura. Objetivo: verificar a variaçäo da amplitude de resposta das emissöes otoacústicas transientes evocadas (TEOAEs) e das emissöes otoacústicas por produto de distorçäo (DPOAEs). Forma de estudo: clínico prospectivo randomizado. Material e método: Foram estudados 10 indivíduos jovens com audiçäo normal, usando programa Celesta 503, Madsen. Foram realizadas três avaliaçöes com no mínimo três semanas de intervalo, mantendo-se constantes as variáveis clinicamente controláveis, tais como, tamanho da oliva, número de apresentaçöes e intensidade do estímulo. Resultados: mostram que a amplitude das TEOAEs variou menos do que das DPOAEs, e que a amplitude da resposta inicial näo mostrou ser determinante na variabilidade da resposta
