Valores normativos de pruebas conductuales de procesamiento auditivo para niños chilenos entre 7 y 12 años: una propuesta inicial / Normative values of auditory processing behavioral tests for chilean children between 7 and 12 years old: an initial proposal

Resumen Introducción: El trastorno del procesamiento auditivo en niños está relacionado con trastornos de lenguaje, bajo rendimiento académico, trastornos de aprendizaje y dificultades psicosociales. Existe consenso internacional sobre la utilidad de las pruebas conductuales para su evaluación y diagnóstico. Objetivo: Establecer valores normativos para pruebas conductuales de procesamiento auditivo en población pediátrica chilena con neurodesarrollo y audición normal. Material y Método: Se realizó un estudio observacional de corte transversal. Participaron 153 sujetos entre 7 y 12 años de la Región Metropolitana. Se estudiaron las pruebas de patrones de frecuencia, habla filtrada y dígitos dicóticos. Se construyeron modelos de regresión fraccional para estimar los valores normativos y además se calcularon los puntajes de corte en los percentiles 2.5, 5 y 10. Resultados: No se evidenciaron diferencias significativas entre oídos para las pruebas estudiadas a excepción de la prueba de dígitos dicóticos. Se construyeron modelos únicos para las pruebas patrones de frecuencia y habla filtrada, y modelos independientes para cada oído para la prueba dígitos dicóticos. Todas las estimaciones resultaron significativas y tuvieron niveles aceptables de precisión. Conclusión: Se obtuvieron los valores normativos y puntajes de corte para las tres pruebas estudiadas. Los valores obtenidos fueron similares a los reportados en otras poblaciones considerando los efectos de oído, de edad, sexo y escolaridad.

Abstract Introduction: Auditory processing disorder in children is related to language disorders, poor academic performance, learning disorders, and psychosocial difficulties. There is international consensus on the usefulness of behavioral tests for their evaluation and diagnosis. Aim: To establish normative values for auditory processing behavioral tests in Chilean pediatric population with normal neurodevelopment and hearing thresholds. Material and Method: An observational cross-sectional study was carried out. One hundred fifty-three subjects between 7 and 12 years old from the Metropolitan Region participated. Frequency pattern tests, filtered speech, and dichotic digits were studied. Fractional regression models were built to estimate the normative values, and cut-off scores were also calculated at the 2.5, 5, and 10 percentiles. Results: There were no significant differences between ears for the tests studied except for the dichotic digits test. Single models were built for the frequency and filtered speech patterns tests and independent models for each ear for the dichotic digit test. All estimates were significant and had acceptable levels of precision. Conclusion: The normative values and cut-off scores were obtained for the three tests studied. The values obtained were similar to those reported in other populations considering the effects of ear, age, sex, and education.

Analysis of results of concurrent hearing and deafness genetic screening and follow up of 33 911 newborns / 中华医学遗传学杂志

OBJECTIVE@#To analyze the results of concurrent hearing and deafness genetic screening and follow up of newborns.@*METHODS@#In total 33 911 babies born to 5 designated hospitals in Nanshan District of Shenzhen city from October 2017 to December 2019 were included. All subjects underwent concurrent hearing and deafness genetic screening covering 21 variants of 4 genes including GJB2, SLC26A4, GJB3 and Mt12SrRNA. For those with positive results, Sanger sequencing was carried out for confirmation.@*RESULTS@#93.32% subjects passed the first-round hearing screening, and 87.01% passed the recheck testing. The overall detection rate was 4.18%. The detection rates for GJB2, SLC26A4, GJB3 and Mt12srRNA variants were 1.98%, 1.58%, 0.37% and 0.25%, respectively. 126 and 84 subjects were found with high risk for delayed-onset and drug-induced hearing loss, respectively. In addition, 4 and 5 subjects were found to harbor homozygous/compound heterozygous variants of the GJB2 and SLC26A4 genes, respectively. Concurrent screening showed that subjects (with heterozygous variants) who did not passed the two round hearing test were as follows: GJB2 with 6.75% in the first round and 2.61% in the second round testing, SLC26A4 (3.3%/1.2%), GJB3 (0.72%/0.14%) and 12SrRNA (0.36%/Nil), respectively. Moreover, the No-pass rate in the subjects with homozygous or compound variants in single gene, heterozygous variant in single gene, heterozygous variant in multiple genes, and homozygous variant in GJB3 gene were significantly higher than the subjects with negative results of genetic screening.@*CONCLUSION@#Concurrent newborn genetic screening can enhance the effectiveness of hearing screening and enable earlier identification and intervention for children with hearing impairment. Follow-up can improve the diagnostic rate for children who are positive for the concurrent screening. Nevertheless, genetic and hearing screening cannot replace the diagnostic testing. It is necessary to conduct comprehensive analysis for the results of genetic and hearing screening and radiological examinations. Sanger sequencing and next-generation sequencing are critical for ascertain the diagnosis.

Evaluation of newborn hearing screening program / Avaliação de um programa de triagem auditiva neonatal

ABSTRACT OBJECTIVE To evaluate Newborn Hearing Screening Program of Hospital Regional de Sobradinho, from January 2016 to December 2017, according to Multiprofessional Committee on Auditory Health parameters and Joint Committee on Infant Hearing (JCIH) recommendations, as well as to describe the prevalence of risk factors for hearing loss within the study population and their impact on the respective program. METHOD This is a quantitative, cross-sectional and retrospective study that carefully analyzed registration books of screened newborns. It was established the prevalence of "pass" and "fail" in test and retest, retest percentage of attendance and referral for audiological diagnosis. Risk factors for hearing loss were described, as well as their influence on "pass" and "fail" rates. Inferential statistical analysis was performed using chi-square test and Anderson-Darling test, with 5% reliability index. RESULTS A total of 3,981 newborns were screened; 2,963 (74.4%) presented no risk factors whereas 1,018 (25.6%) did, prematurity being the most frequent (51.6%). In the test, 166 (4.2%) failed and 118 (71.1%) attended the retest. The referral rate for diagnosis was 0.3%. CONCLUSION Regarding the percentage of referral for diagnosis, the program reached indexes recommended by the Joint Committee on Infant Hearing and Multiprofessional Committee on Auditory Health. The most prevalent risk factor within the population was prematurity.

RESUMO OBJETIVO Avaliar o Programa de Triagem Auditiva Neonatal do Hospital Regional de Sobradinho, no período de janeiro de 2016 a dezembro de 2017, segundo os parâmetros do Comitê Multiprofissional em Saúde Auditiva e as recomendações do Joint Committee on Infant Hearing (JCIH), bem como descrever a prevalência dos indicadores de risco para deficiência auditiva na população estudada e seu impacto no respectivo programa. MÉTODO Trata-se de um estudo quantitativo, transversal e retrospectivo no qual foram analisados criteriosamente livros de registros dos neonatos triados. Foi estabelecida a prevalência de "passa" e "falha" no teste e reteste, o percentual de comparecimento para reteste e de encaminhamento para diagnóstico audiológico. Foram descritos os indicadores de risco para deficiência auditiva, bem como sua influência nos índices de "passa" e "falha". Foi realizada análise estatística inferencial utilizando o teste do qui-quadrado e o teste de Anderson-Darling, com índice de confiabilidade de 5%. RESULTADOS Foram triados 3.981 neonatos, 2.963 (74,4%) dos quais sem indicadores de risco e 1.018 (25,6%) com, sendo a prematuridade o mais frequente (51,6%). No teste, 166 (4,2%) falharam e 118 (71,1%) compareceram para o reteste. O índice de encaminhamento para diagnóstico foi de 0,3%. CONCLUSÃO O programa atingiu os índices recomendados pelo Joint Committee on Infant Hearing e pelo Comitê Multiprofissional em Saúde Auditiva quanto à porcentagem de encaminhamento para diagnóstico. O indicador de risco mais prevalente na população foi a prematuridade.

Hipotireoidismo congênito como fator de risco para os transtornos do processamento auditivo central / Congenital hypothyroidism as a risk factor for central hearing process disorders

RESUMO Objetivo: Investigar a manifestação de sintomas do transtorno do processamento auditivo central em crianças com hipotireoidismo congênito. Métodos: Estudo de caráter exploratório, descritivo e transversal com 112 pacientes com hipotireoidismo congênito com idade ≥5 anos. Realizou-se entrevista com os pais/cuidadores no momento da espera da consulta médica. Portadores de outras afecções médicas foram excluídos. Como instrumento de pesquisa utilizou-se o protocolo estruturado de anamnese para avaliação do processamento auditivo rotineiramente empregado por audiologistas. A análise estatística utilizou o teste Qui-quadrado. Resultados: A distribuição por sexo foi semelhante (meninas: 53,3%). Os casos não-disgenesia constituíram a forma fenotípica mais prevalente para o hipotireoidismo congênito (88,4%), e verificou-se que 65,3% das crianças apresentavam algum episódio de níveis séricos irregulares de hormônio tireoestimulante. Dentre as manifestações mais frequentes dos sintomas do transtorno do processamento auditivo central, as queixas relaciondas às funções cognitivas auditivas, como: figura-fundo (83,0%), atenção auditiva (75,9%) e memória auditiva (33,0%) foram as mais evidentes. Reclamações relacionadas ao rendimento escolar foram reportadas em 62,3%. Conclusões: Os dados obtidos evidenciaram altas frequências de sintomas de defasagem nas funções cognitivas relacionadas ao processamento auditivo central, em especial na atenção auditiva, figura-fundo e memória auditiva nos portadores do hipotireoidismo congênito.

ABSTRACT Objective: To investigate the presence of central auditory processing disorder symptoms in children with congenital hypothyroidism. Methods: An exploratory, descriptive, cross-sectional study of 112 patients with congenital hypothyroidism aged ≥5 years old. An interview was held with the parents/caregivers at the time of the medical consultation. Patients with other medical conditions were excluded. As a research instrument, the structured protocol of anamnesis was used to evaluate the auditory processing routinely used by audiologists. For statistical analysis, the chi-square test was used. Results: Sex distribution was similar in both boys and girls (girls: 53.3%). The most prevalent phenotypic form of congenital hypothyroidism was no dysgenesis (88.4%), and 65.3% of the children had an episode of irregular serum thyroid-stimulating hormone (TSH) levels. Among the manifestations of the most frequent central auditory processing disorder symptoms, problems were reported with regard to cognitive functions, as they related to hearing, such as figure-background ability (83.0%), auditory attention (75.9%) and auditory memory (33.0%). Complaints related to school performance were reported in 62.3% of the cases. Conclusions: The data obtained show a high frequency of lag symptoms in cognitive functions related to central auditory processing, particularly with regard to auditory attention, figure-background ability and auditory memory in patients with congenital hypothyroidism.

Association between language and hearing disorders - risk identification

OBJECTIVE: To identify children at risk for hearing and/or language disorders and to investigate the association between these risks by conducting pre-validated hearing and language screenings. METHODS: The study was conducted during a polio vaccination campaign in August of 2013 in basic health units in western São Paulo. Parents of children between 2 and 5 years of age were asked to complete two screening tools: a hearing questionnaire (regarding hearing development) and a language production and comprehension scale (including the major language development milestones). The screening tools were administered by different researchers. We compared the risk of having language disorders among children at risk for hearing loss versus children not at risk, as well as the attributable risk and odds ratios. Chi-squared tests and logistic regression analyses were used. RESULTS: The study included 479 children with a mean age of three and one-half years, of whom 26.9% were identified as at risk for deficits in language production, 8.6% were at risk for deficits in language comprehension and 14% were at risk for hearing disorders. The children at risk for hearing disorders were twice as likely as those not at risk to exhibit language production and comprehension deficits. CONCLUSION: The results of this study highlight the importance of establishing and adopting low-cost procedures such as screenings to identify children at risk of developing language and/or hearing disorders in early childhood.

Analysis of Predisposing Factors for Hearing Loss in Adults

We aimed to estimate the effects of various risk factors on hearing level in Korean adults, using data from the Korea National Health and Nutrition Examination Survey. We examined data from 13,369 participants collected between 2009 and 2011. Average hearing thresholds at low (0.5, 1, and 2 kHz) and high frequencies (3, 4, and 6 kHz), were investigated in accordance with various known risk factors via multiple regression analysis featuring complex sampling. We additionally evaluated data from 4,810 participants who completed a questionnaire concerned with different types of noise exposure. Low body mass index, absence of hyperlipidemia, history of diabetes mellitus, low incomes, low educational status, and smoking were associated with elevated low frequency hearing thresholds. In addition, male sex, low body mass index, absence of hyperlipidemia, low income, low educational status, smoking, and heavy alcohol consumption were associated with elevated high frequency hearing thresholds. Participants with a history of earphone use in noisy circumstances demonstrated hearing thresholds which were 1.024 dB (95% CI: 0.176 to 1.871; P = 0.018) higher, at low-frequencies, compared to participants without a history of earphone use. Our study suggests that low BMI, absence of hyperlipidemia, low household income, and low educational status are related with hearing loss in Korean adults. Male sex, smoking, and heavy alcohol use are related with high frequency hearing loss. A history of earphone use in noisy circumstances is also related with hearing loss.

Overview of newborn hearing screening activities in Latin America / Panorama de las actividades de examen sistemático de la capacidad auditiva en recién nacidos en América Latina

OBJECTIVE: Ascertain the status of early hearing detection and intervention services in Latin America. METHODS: Between June and November 2007, Gallaudet University, in collaboration with the U.S. Centers for Disease Control and Prevention Early Hearing Detection and Intervention Diversity Committee, disseminated a survey to 11 Latin American countries. It included questions about newborn hearing screening (NHS) procedures, the availability of intervention services for infants with hearing loss, and challenges in identifying infants with hearing loss. In addition, a literature review was conducted to help identify the status of NHS efforts in Latin America. RESULTS: Six countries (Chile, Costa Rica, Guatemala, Mexico, Panama, and Uruguay) and one U.S. territory (Puerto Rico) responded to the survey. Responses indicated that efforts to identify infants with hearing loss vary within and across countries in Latin America. In some countries, activities have been implemented at a national level; in others, activities have been implemented at a single hospital or region within a country. Common barriers to implementation of NHS programs include a lack of funding, screening and diagnostic equipment, public awareness, and personnel qualified to work with infants and young children. CONCLUSIONS: In spite of several barriers, NHS programs have been implemented in at least some facilities and regions in Latin America. Additional efforts are needed to expand NHS activities in Latin America.

OBJETIVO: Evaluar la situación de los servicios de detección e intervención tempranas de problemas auditivos en América Latina. MÉTODOS: Entre junio y noviembre del 2007, la universidad Gallaudet, en colaboración con el Comité de Diversidad del Programa de Detección Auditiva e Intervención Tempranas de los Centros para el Control y la Prevención de Enfermedades de los Estados Unidos, distribuyó un cuestionario en 11 países latinoamericanos. El cuestionario incluía preguntas acerca de los procedimientos de examen sistemático de la capacidad auditiva en recién nacidos, la disponibilidad de servicios de intervención para menores de un año hipoacúsicos y los retos para detectarlos. Además, se efectuó una revisión bibliográfica para ayudar a determinar el estado de las iniciativas de examen sistemático de la audición en recién nacidos en América Latina. RESULTADOS: Respondieron a la encuesta seis países (Chile, Costa Rica, Guatemala, México, Panamá y Uruguay) y un territorio de los Estados Unidos (Puerto Rico). Las respuestas indicaron que los esfuerzos para detectar a los menores de un año hipoacúsicos varían dentro de cada país y de un país a otro en América Latina. En algunos países se han realizado actividades a nivel nacional; en otros, en un único hospital o zona del país. Los factores que con frecuencia obstaculizan la puesta en práctica de los programas de examen sistemático de la audición en recién nacidos incluyen la falta de financiamiento, de equipos de tamizaje y diagnóstico, de concientización del público y de personal capacitado para atender a menores de un año y niños pequeños. CONCLUSIONES: A pesar de que existen varios obstáculos, se han ejecutado programas de examen sistemático de la audición en recién nacidos en al menos algunos establecimientos de salud y zonas de América Latina. Se necesitan esfuerzos mayores para ampliar estas actividades en América Latina.

Caracterização da triagem auditiva neonatal da Clínica Limiar em Porto Velho - Rondônia / Newborn hearing screening in the Limiar Clinic in Porto Velho - Rondônia

Triagem auditiva neonatal de rotina é capaz de detectar precocemente alterações auditivas que poderão interferir na vida do indivíduo. OBJETIVO: Caracterizar o programa de triagem auditiva neonatal em uma população de neonatos. MATERIAL E MÉTODO: Estudo de coorte histórico longitudinal. Levantamento no banco de dados da clínica responsável pela triagem auditiva neonatal na cidade Porto Velho-RO do período de fevereiro de 2004 a outubro de 2006. RESULTADOS: Dos 6889 recém-nascidos cadastrados, 5700 (82,7 por cento) passaram e 1189 (17,3 por cento) falharam na primeira etapa da triagem. Dos que falharam 900 (75,7 por cento) compareceram para o reteste. Dentre estes, 15 (0,22 por cento) recémnascidos tiveram deficiência auditiva confirmada. A deficiência auditiva mais prevalente foi à perda auditiva neural com 46,7 por cento dos casos confirmados, tendo como indicador de risco mais prevalente a hiperbilirrubinemia. CONCLUSÃO: A hiperbilirrubinemia apresentou maior prevalência dentre os indicadores de risco encontrados nos recém-nascidos com deficiência auditiva confirmada. A prevalência de perda auditiva observada é de dois recém-nascidos para cada 1000 nascidos. Observa-se ainda uma correlação estatisticamente significante entre a perda auditiva neural com o indicador de risco hiperbilirrubinemia e perda auditiva neurossensorial com a etiologia desconhecida.

With the universal hearing screening we can prevent auditory disorders in children. AIM: To characterize the program of neonatal auditory screening into a population of neonates. MATERIALS AND METHODS: longitudinal cohort study. We surveyed the clinic's database on neonatal auditory screening in the city of Porto Velho, Rondônia. RESULTS: Among the 6,889 newborns in the database, 5,700 (82.7 percent) passed and 1,189 (17.3 percent) failed the first screening. Of the group which failed 900 (75.7 percent) returned for retesting. Among these, 15 (0.22 percent) newborns had hearing loss confirmed. The most prevalent was neural hearing loss with 46.7 percent confirmed cases; they had hyperbilirubinemia as the most prevalent risk factor. CONCLUSION: hyperbilirubinemia was the most prevalent risk factor found in the group of hearing impaired children. The prevalence of hearing loss was of 2 in 1,000 newborns. It is important to highlight the relevant association between neural hearing loss caused by hyperbilirubinemia and sensorineural hearing loss of unknown causes.

effect of excessive noise exposure on the hearing thresholds of aviation workers in Karachi

The purposes of this study on Aviation Workers were to [a] determine the prevalence of Noise induced hearing loss [NIHL] in aviation workers [b] suggest measures for its prevention. This cross sectional epidemiological study was conducted with noise exposed and non noise exposed matching variables of adult age group, full time [24 hours], male workers at a large metropolitan airport of Karachi, Pakistan [Noise exposed group], villagers living in the outskirts of Karachi who had their work place and residence within the village [non noise exposed group]. The three measures used were Hearing Questionnaire, Audiological assessment and a record review of base line hearing test [pure tone audiogram] and noise levels at locations of work and residence lived i.e. round the clock noise exposure. Subjects with other causes of hearing impairment like, otitis media, post high grade fever, metabolic disorders and history of ototoxicity were excluded from the study. A significant difference in prevalence of hearing loss [more than 30db] between the noise exposed and non noise exposed group [P<0.5] was noted. Aggressive hearing conservation measures are required for these aviation workers; they are like [a] Availability of HPD's [b] Ban on "Non Certified" aircraft operations as specified by ICAO Chapter 3, Annex-16

Assessment of auditory processing in children with attention deficit hyperactivity disorder and language-based learning impairments

Objetiva fornecer informaçäo sobre dois testes de desordens do processamento auditivo central, do teste de sentenças com competiçäo e de um teste para desordens do processamento temporal denominado Teste de FusäoAuditiva-Revisado - AFT-R. Objetiva também, mostrar os resultados desses testes quando aplicados em duas populaçöes. Limiares de fusäo auditiva e escores do teste de sentenças com competiçäo de 18 crianças com Déficit de Atençäo e Hiperatividade - ADHD, e 17 crianças com problemas de linguagem - LLI foram investigados usando o AFT-R e o teste de sentenças comcompetiçäo - CST. Os resultados foram comparados aos valores normativos publicados previamente. Observou-se diferença significativa entre os grupos com relaçäo aos limiares de fusäo auditiva: as crianças com ADHD apresentaram limiares mais pobres, piores, do que as crianças com LLIe as crianças normais. As crianças com ADHD tiveram uma média mais alta, resultados piores, e um desvio padräo maior de limiares de fusäo auditiva do que os encontrados em crianças normais e naquelas com LLI. Nenhuma diferença significativa foi encontrada entre os grupos - ADHD e LLI, no teste de sentenças com competiçäo à direita - CST-R e com competiçäo à esquerda - CST-L. Observou-se diferença significativa de performance entre as crianças normais, as crianças com ADHD e as crianças com LLI nos testes CST-R e CST-L. As implicaçöes clínicas desses resultados säo discutidas