OBJETIVO: Comparar o tempo de dois procedimentos de Potencial Evocado Auditivo de Tronco Encefálico Automático (PEATE-A) utilizando taxa de repetição e modo de detecção diferentes. MÉTODOS: Foi realizada a triagem auditiva com Potencial Evocado Auditivo de Tronco Encefálico Automático (PEATE-A) em 30 neonatos, com média de idade de 21 dias. Cada neonato foi submetido a dois procedimentos de triagem auditiva com diferentes equipamentos de PEATE-A (Procedimento 1 e Procedimento 2). O Procedimento 1 utilizou taxa de repetição de 53 Hz e teste estatístico para detecção da resposta denominado one-sample test, e o Procedimento 2 utilizou taxa de repetição de 90 Hz e teste estatístico para detecção da resposta denominado q-sample test. Em seguida, foi registrado o PEATE com estímulo clique como teste padrão ouro, cuja análise das respostas foi realizada por um fonoaudiólogo com experiência neste procedimento. RESULTADOS: O tempo médio observado para o Procedimento 1 considerando ambas orelhas foi de 84,8 (±53,5) segundos; para o Procedimento 2, o tempo médio foi de 27,9 (±20,0) segundos. O primeiro procedimento apresentou tempo de exame aproximadamente três vezes maior quando comparado ao segundo. A análise estatística mostrou diferença significativa entre os tempos dos procedimentos. CONCLUSÃO: O q-sample test e taxa de repetição em torno de 90 Hz nos equipamentos de PEATE-A detectaram a resposta de maneira mais rápida.
Potenciais evocados auditivos; Triagem neonatal; Recém-nascido; Audição; Testes auditivos
PURPOSE: To compare the testing time of two Automated Auditory Brainstem Response (AABR) procedures using different repetition rates and detection modes. METHODS: A hearing screening using AABR was performed in 30 newborns with mean age of 21 days. Each newborn was submitted to two hearing screening procedures using different AABR equipments (Procedure 1 and Procedure 2). Procedure 1 used a repetition rate of 53 Hz and the one-sample test for response detection; Procedure 2 used a repetition rate of 90 Hz, and the q-sample test for response detection. The ABR with click stimulus was then registered as gold standard test, and the responses were analyzed by a trained audiologist. RESULTS: The mean time observed for Procedure 1 considering both ears was 84.8 (±53.5) seconds; for Procedure 2 the mean time was 27.9 (±20.0) seconds. The testing time of the first procedure was three times longer than the second one. Statistical analysis showed significant difference between the testing times of the procedures. CONCLUSION: The q-sample test and the repetition rate of 90 Hz used in the AABR equipment showed earlier response detection.
Evoked potentials, auditory; Neonatal screening; Infant, newborn; Hearing; Hearing tests
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