Neonatal hearing screening in a low-risk maternity hospital in São Paulo state / Triagem auditiva neonatal em uma maternidade de baixo risco do interior paulista

ABSTRACT INTRODUCTION: The literature indicates that neonatal hearing screening should be universal, so a description of programs that adopt this recommendation is relevant. OBJECTIVE: To describe the results of newborn hearing screening and the profile of mothers and newborns attended to in a low-risk maternity setting, and to correlate the characteristics of this population with the results of transient evoked otoacoustic emissions. METHODS: A contemporary cross-sectional cohort study. The sample consisted of 670 infants and the procedures performed were audiological history, transient-evoked otoacoustic emissions (TEOAE), distortion product-evoked otoacoustic emissions (DPEOAE), and automated-brainstem auditory evoked potential (ABSAEP). RESULTS: The rate of success in this program was 98.5%, the failure rate was 0.62%, and that of non-attendance to finalize the diagnostic process, 0.93%. When correlating the variables studied with the results of transient evoked otoacoustic emissions, there was a significant negative correlation only for age of infant. CONCLUSION: The program of this maternity hospital was effective and complies with national and international recommendations. The population consisted of young mothers with few pregnancy complications and healthy infants. The only variable that influenced transient evoked otoacoustic emission results, after hospital discharge, was the age at which infants were evaluated.

RESUMO Introdução: A literatura relata que a triagem auditiva neonatal deve ser universal, o que torna relevante a descrição de programas que adotam esta recomendação. Objetivo: Descrever os resultados da triagem auditiva neonatal e o perfil das mães e recémnascidos atendidos em uma maternidade de baixo risco e correlacionar as características desta população com os resultados das emissões otoacústicas evocadas transientes. Método: Estudo coorte contemporâneo com corte transversal. A amostra foi composta por 670 bebês e os procedimentos realizados foram: anamnese audiológica, emissões otoacústicas (EOA) transientes, EOA produto de distorção, e potencial evocado auditivo de tronco encefálico automático. Resultados: O índice de passa neste programa foi de 98,5%; de falha de 0,62% e o de não comparecimento para finalização do processo diagnóstico de 0,93%. Ao correlacionar as variáveis estudadas com os resultados das emissões otoacústicas transiente houve correlação negativa significante apenas para a idade do bebê. Conclusão: O programa desta maternidade mostrou-se efetivo e atende a recomendações nacionais e internacionais. A população foi composta por mães jovens com poucas intercorrências gestacionais e bebês saudáveis. A única variável que influenciou nos resultados das emissões otoacústicas por transiente, após a alta hospitalar, foi à idade em que os bebês foram avaliados.

Neonatal hearing screening in a low-risk maternity in São Paulo state.

INTRODUCTION: The literature indicates that neonatal hearing screening should be universal, so a description of programs that adopt this recommendation is relevant. OBJECTIVE: To describe the results of newborn hearing screening and the profile of mothers and newborns attended to in a low-risk maternity setting, and to correlate the characteristics of this population with the results of transient evoked otoacoustic emissions. METHODS: A contemporary cross-sectional cohort study. The sample consisted of 670 infants and the procedures performed were audiological history, transient-evoked otoacoustic emissions (TEOAE), distortion product-evoked otoacoustic emissions (DPEOAE), and automated-brainstem auditory evoked potential (ABSAEP). RESULTS: The rate of success in this program was 98.5%, the failure rate was 0.62%, and that of non-attendance to finalize the diagnostic process, 0.93%. When correlating the variables studied with the results of transient evoked otoacoustic emissions, there was a significant negative correlation only for age of infant. CONCLUSION: The program of this maternity hospital was effective and complies with national and international recommendations. The population consisted of young mothers with few pregnancy complications and healthy infants. The only variable that influenced transient evoked otoacoustic emission results, after hospital discharge, was the age at which infants were evaluated.

Sound pressure level in a municipal preschool

AIM: To evaluate the sound pressure level to which preschool students are exposed. METHODS: This was a prospective, quantitative, nonexperimental, and descriptive study. To achieve the aim of the study we used an audio dosimeter. The sound pressure level (SPL) measurements were obtained for 2 age based classrooms. Preschool I and II. The measurements were obtained over 4 days in 8-hour sessions, totaling 1920 minutes. RESULTS: Compared with established standards, the SPL measured ranged from 40.6 dB (A) to 105.8 dB (A). The frequency spectrum of the SPL was concentrated in the frequency range between 500 Hz and 4000 Hz. The older children produced higher SPLs than the younger ones, and the levels varied according to the activity performed. Painting and writing were the quietest activities, while free activities period and games were the noisiest. CONCLUSION: The SPLs measured at the preschool were higher and exceeded the maximum permitted level according to the reference standards. Therefore, the implementation of actions that aim to minimize the negative impact of noise in this environment is essential.

Sound pressure level in a municipal preschool.

AIM: To evaluate the sound pressure level to which preschool students are exposed. METHOD: This was a prospective, quantitative, nonexperimental, and descriptive study. To achieve the aim of the study we used an audio dosimeter. The sound pressure level (SPL) measurements were obtained for 2 age based classrooms. Preschool I and II. The measurements were obtained over 4 days in 8-hour sessions, totaling 1920 minutes. RESULTS: Compared with established standards, the SPL measured ranged from 40.6 dB (A) to 105.8 dB (A). The frequency spectrum of the SPL was concentrated in the frequency range between 500 Hz and 4000 Hz. The older children produced higher SPLs than the younger ones, and the levels varied according to the activity performed. Painting and writing were the quietest activities, while free activities period and games were the noisiest. CONCLUSION: The SPLs measured at the preschool were higher and exceeded the maximum permitted level according to the reference standards. Therefore, the implementation of actions that aim to minimize the negative impact of noise in this environment is essential.