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Introduction The audiological evaluation has the main objective of determining the integrity of the auditory system. Pure tone audiometry is a standardized behavioral procedure that aims to investigate auditory thresholds to describe auditory sensitivity. Despite being recognized since the mid-1960s, high frequency audiometry is still little used and explored in clinical practice, and its use is more considered as an audiological monitoring tool or as a research tool. Objective To analyze the audiological thresholds of high frequency audiometry in normal hearing individuals, and to verify the predictive capacity of age in the auditory thresholds of high frequency audiometry. Methods This is a retrospective, cross-sectional, and quantitative study that was approved by the Research Ethics Committee under number 5.039.583/21. The procedures were: clinical evaluation, pure tone audiometry, acoustic immittance measurements, and high frequency audiometry. All data collected from the exams were tabulated in an Excel spreadsheet and analyzed using appropriate statistical tests in the Statistical Package Social Sciences software. Results A total of 980 medical records were analyzed. The right and left ears presented similar tonal hearing thresholds for the frequencies of 12 kHz and 16 kHz. The threshold variance of 29.8% in the 12 kHz frequency can be explained by the variance of age, while, for the frequency of 16 kHz, this percentage is of 46.4%. Conclusion For 12 kHz hearing thresholds, an increase of 1 year leads to a 0.66 dBHL increase in hearing threshold. For 16 kHz hearing thresholds, an increase of 1 year leads to a 1.02 dBHL increase in hearing threshold.

Introdução: Drogas como álcool, cocaína ou sedativos utilizados durante a gestação podem atravessar a barreira placentária e influenciar o desenvolvimento do feto. Objetivo: Analisar a audição de neonatos cujas mães utilizaram substâncias químicas durante a gravidez, por meio da triagem auditiva e acompanhamento audiológico. Método: Este estudo foi aprovado pelo Comitê de Ética em Pesquisa da Unicamp, sob parecer nº 932.602/2015. Foram avaliados neonatos, cujas mães fizeram uso de substâncias químicas durante a gestação, no período de novembro de 2016 a maio de 2017 que nasceram no Centro de Atenção Integral à Saúde da Mulher-CAISM/UNICAMP. Foram excluídos os recém-nascidos que apresentaram indicadores de risco para perda auditiva. A triagem auditiva teste-reteste foi realizada por meio Potencial Evocado Auditivo de Tronco Encefálico-Automático, com estímulo do tipo clique, na intensidade de 35 dBNA. Todos os neonatos foram agendados para uma avaliação audiológica. Resultados: Na triagem auditiva, 17 neonatos passaram bilateralmente dos quais apenas 7 retornaram para a avaliação audiológica, sendo que a grande maioria teve atraso nalatência da onda V e no intervalo interpico I-V, no PEATE a 80dBNA para cliques, em pelo menos uma orelha. Conclusão: Foram encontradas alterações auditivas sugestivas de serem consequência do uso de substâncias psicoativas usadas na gestação.

Background: Unidentified hearing loss at birth can badly affect the linguistic, social, and educational development of children. National and international committees on infant hearing emphasize the importance of early identification of hearing loss, with follow-up and early intervention. The aim of this study was to analyze data on hearing development from a program following up exits from the Neonatal Intensive Care Unit (NICU) and from neonatal intermediate care wards in Prof. Dr. Jose Aristodemo Pinotti Women's Hospital in the Brazilian State of Sao Paulo. Material and methods: This was a retrospective study based on records from a follow-up program. Data came from records collected from 2012 to 2015 on 88 subjects, and included the results of behavioral hearing tests, visual reinforcement audiometry and tympanometry. The data were descriptively and statistically analyzed.Results: Changes in the development of hearing abilities over the first two years of life in children that stayed at the NICU or the intermediate care ward for more than 48 hours were significant. However, late-onset or progressive hearing losses were not observed. There was no correlation between hearing development and specific risk indicators or with tympanometry. Conclusions:For the analyzed program, progressive or late-onset losses were not found, but there were major delays in the development of hearing abilities in the first two years of life for children from NICU and neonatal intermediate care wards.