RESUMO
Abstract Introduction: The conventional evaluation of neural telemetry and impedance requires the use of the computer coupled to an interface, with software that provides visualization of the stimulus and response. Recently, a remote control (CR220®) was launched in the market, that allows the performance of intraoperative tests with minimal instrumentation. Objective: To evaluate the agreement of the impedance values and neural telemetry thresholds, and the time of performance in the conventional procedure and by the remote control. Methods: Multicentric prospective cross-sectional study. Intraoperative evaluations of cochlear implants compatible with the use of CR220® were included. The tests were carried out in the 22 electrodes to compare the time of performance in the two situations. The agreement of the neural telemetry threshold values obtained from five electrodes was analyzed, and the agreement of impedance was evaluated by the number of electrodes with altered values in each procedure. Results: There were no significant difference between the impedance values. There was a moderate to strong correlation between the electrically-evoked compound action potential thresholds. The mean time to perform the procedures using the CR220 was significantly lower than that with the conventional procedure. Conclusion: The use of the CR220 provided successful records for impedance telemetry and automatic neural response telemetry.
Resumo Introdução: A avaliação convencional da telemetria neural e de impedâncias implica o uso do computador acoplado a uma interface, o software fornece o estímulo e a visualização das respostas. Recentemente, foi lançado um controle remoto (CR220®), que possibilita testes intraoperatórios com instrumental mínimo. Objetivo: Avaliar a concordância dos valores das impedâncias e dos limiares da telemetria neural e o tempo de execução no procedimento convencional e pelo controle remoto. Método: Estudo prospectivo transversal multicêntrico. Foram incluídas as avaliações intraoperatórias de implante coclear compatível com o uso do CR220®. Os testes foram realizados nos 22 eletrodos para comparar os tempos de execução nas duas situações. Foi analisada a concordância dos valores do limiar da telemetria neural obtidos em cinco eletrodos e a concordância das impedâncias foi avaliada pelo número de eletrodos com valores alterados em cada procedimento. Resultados: Não houve diferença significante entre as impedâncias. Obteve-se moderada a forte correlação entre os limiares do potencial de ação composto eletricamente evocado. O tempo médio para os procedimentos com o CR220 foi significativamente menor do que com o procedimento convencional. Conclusão: O uso do CR220 proporcionou registros bem-sucedidos para a telemetria de impedância e a telemetria automática de respostas neurais.
Assuntos
Humanos , Pré-Escolar , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Adulto Jovem , Telemetria/instrumentação , Implantes Cocleares , Implante Coclear/instrumentação , Surdez/cirurgia , Limiar Auditivo , Testes de Impedância Acústica , Estudos Transversais , Estudos Prospectivos , Implante Coclear/métodos , Surdez/etiologia , Potenciais Evocados AuditivosRESUMO
INTRODUCTION: The conventional evaluation of neural telemetry and impedance requires the use of the computer coupled to an interface, with software that provides visualization of the stimulus and response. Recently, a remote control (CR220®) was launched in the market, that allows the performance of intraoperative tests with minimal instrumentation. OBJECTIVE: To evaluate the agreement of the impedance values and neural telemetry thresholds, and the time of performance in the conventional procedure and by the remote control. METHODS: Multicentric prospective cross-sectional study. Intraoperative evaluations of cochlear implants compatible with the use of CR220® were included. The tests were carried out in the 22 electrodes to compare the time of performance in the two situations. The agreement of the neural telemetry threshold values obtained from five electrodes was analyzed, and the agreement of impedance was evaluated by the number of electrodes with altered values in each procedure. RESULTS: There were no significant difference between the impedance values. There was a moderate to strong correlation between the electrically-evoked compound action potential thresholds. The mean time to perform the procedures using the CR220 was significantly lower than that with the conventional procedure. CONCLUSION: The use of the CR220 provided successful records for impedance telemetry and automatic neural response telemetry.
Assuntos
Implante Coclear/instrumentação , Implantes Cocleares , Surdez/cirurgia , Telemetria/instrumentação , Testes de Impedância Acústica , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Limiar Auditivo , Criança , Pré-Escolar , Implante Coclear/métodos , Estudos Transversais , Surdez/etiologia , Potenciais Evocados Auditivos , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos , Adulto JovemRESUMO
UNLABELLED: To investigate the major etiological agents that caused deafness in the studied population is of great relevance to prognostic and treatment purposes and it serves as sampling for future actions in the public health. AIM: to check the different hearing impairment etiologies of patients in the cochlear implant program; we studied the etiologies described in order to correlate etiology with age. MATERIALS AND METHODS: Longitudinal historical cohort study which analyzed 200 charts from patients submitted to cochlear implantation in the program between August of 2000 and May of 2008. Collected data: age; gender; state of birth; hearing impairment etiology. RESULTS AND CONCLUSION: Unknown etiology prevailed as main cause, and this indicates the need to continue carrying out genetic studies in those cases of congenital sensorineural hearing loss without an apparent cause in order to trace and etiological profile. Rubella was the second most found cause, and for this etiology there already are preventive measures as there are for meningitis. Even then, the incidences of these diseases remain high. In the correlation of the different etiologies and age ranges, we noticed varied etiologies when we compared children, young adults, adults and the elderly.
Assuntos
Implante Coclear , Surdez/etiologia , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Surdez/cirurgia , Feminino , Humanos , Lactente , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
Averiguar os principais agentes etiológicos que causaram a surdez nessa população em estudo é de grande relevância para o prognóstico do tratamento e serve de amostragem para futuras ações de saúde pública. OBJETIVO: Verificar as diferentes etiologias da deficiência auditiva dos pacientes implantados do programa de implante coclear; realizar o levantamento das etiologias encontradas; correlacionar a etiologia com a idade. MATERIAL E MÉTODO: Estudo de coorte histórico longitudinal com base na análise de 200 prontuários dos pacientes submetidos à cirurgia de Implante Coclear, realizada no período de agosto de 2000 a maio de 2008. Os dados coletados foram referentes a: idade, sexo, estado de origem, etiologia da deficiência auditiva. RESULTADOS E CONCLUSÃO: Pode-se afirmar que a etiologia desconhecida continua prevalecendo, o que indica a necessidade da realização de estudos genéticos nos casos de surdez neurossensorial congênita sem causa aparente com objetivo de chegar a um real perfil etiológico. A rubéola foi a segunda causa mais encontrada e para essa etiologia já existem medidas preventivas igualmente à meningite. Mesmo assim as incidências dessas patologias continuam altas. Na correlação entre as diferentes etiologias e faixas etárias, constatamos etiologias variadas principalmente na comparação de crianças; adultos jovens; adultos e idosos.
To investigate the major etiological agents that caused deafness in the studied population is of great relevance to prognostic and treatment purposes and it serves as sampling for future actions in the public health. AIM: to check the different hearing impairment etiologies of patients in the cochlear implant program; we studied the etiologies described in order to correlate etiology with age. MATERIALS AND METHODS: Longitudinal historical cohort study which analyzed 200 charts from patients submitted to cochlear implantation in the program between August of 2000 and May of 2008. Collected data: age; gender; state of birth; hearing impairment etiology. RESULTS AND CONCLUSION: Unknown etiology prevailed as main cause, and this indicates the need to continue carrying out genetic studies in those cases of congenital sensorineural hearing loss without an apparent cause in order to trace and etiological profile. Rubella was the second most found cause, and for this etiology there already are preventive measures as there are for meningitis. Even then, the incidences of these diseases remain high. In the correlation of the different etiologies and age ranges, we noticed varied etiologies when we compared children, young adults, adults and the elderly.
