Jaqueline Medeiros de Mello

Distortion-product otoacoustic emissions at ultra-high frequencies in parents of individuals with autosomal recessive hearing loss

PURPOSE To verify the effectiveness of the Cognitive Auditory Evoked Potential-P300 (CAEP-P300) for monitoring the therapeutical evolution of students with developmental dyslexia. METHODS Twenty students diagnosed with developmental dyslexia, of both genders, aged between 8 and 14 years, divided into two randomized groups, one of them submitted to a phonological remediation program associated with reading and writing (GI), and the other one representing the control group (GII), participated in the study. The groups were paired up, and the individuals were submitted to two evaluations of the CAEP-P300 and the same interval was kept for both. Paired Students t-test, ANOVA test, and Pearsons correlation coefficient were used, adopting 5% significance level. RESULTS The statistical comparison of the pre and post evaluations of each group demonstrated difference in the Phonological Awareness Test (p=0.000) and in the P300 latency (p=0.005) only for GI. CONCLUSION CAEP-P300 use for monitoring the therapeutical evolution of children with developmental dyslexia is possible and represents a viable option for intervention programs.PURPOSE To evaluate the cochlear function of parents of individuals with autosomal recessive gene Gap Junction Protein Beta-2 hearing loss by ultra-high frequencies distortion-product otoacoustic emissions (DPOAEs), compared with responses of a control group matched for age and gender. METHODS We studied 56 subjects aged from 20 to 58 years, divided into two groups. The study group comprised 28 parents of hearing-impaired patients due to autosomal recessive inheritance, 14 females aged 20.0-55.0 years (mean 32.8 years) and 14 males aged 20.0-58.0 years (mean 35.2 years). Control group was composed of normal hearing individuals, 14 males and 14 females age-matched to the study group. The subjects underwent tests for audiometry, tympanometry, and DPOAE in the frequency range of 9.000-16.000 Hz. RESULTS We found 64.3% of normal results of DPOAE in the study group compared to 91.1% in the control. There were significant differences between groups in the ears and DPOAE responses, and the mean level of response was in 10 dBNPS in study group and 14 dBNPS in the control. The Pearsons correlation between age and DPOAE in ultra-high frequencies showed no statistical significance. CONCLUSION DPOAE at ultra-high frequencies were able to identify individuals from both groups, suggesting that heterozygous individuals for the Gap Junction Protein Beta-2 gene mutation may have damage to the cochlear function before clinical manifestation in audiometry.

Índice de retorno ao reteste em um programa de triagem auditiva neonatal

PURPOSE: investigate the level of conscience of the parents in relation to the importance of the neonatal auditory selection, as well as verifying the reasons of not the attendance to the return set appointments after the first evaluation. METHOD: the casuistry was constituted by 31 responsible mothers in the neonatal unit of the University Hospital of Maringa, which had not appeared to the high return set appointments after the hospital one. RESULTS: the reasons presented for the responsible mothers and/or for the attendance to the set appointments return had not involved attitudes that had been able to signal little importance attributed to the questions related to the hearing and the Newborn Hearing Screening, therefore suggest reasons irrelevant as the forgetfulness of the return, mother thought that the baby would not leave to be submitted to the examination and the loss of schedule for new evaluation. Such fact probably reflects the lack of awareness on the part of the mothers of the newborns how much to the importance of the Newborn Hearing Screening. CONCLUSION: exists to increase the general awareness in relation to the Newborn hearing screening, on the part of the familiar ones and the professionals who act directly with the newborns, which will contribute for the agility of the diagnostics process, guaranteeing better perspective to the future of carrying children of auditory deficiency.

Emissões otoacústicas evocadas por produto de distorção em frequências ultra-altas em pais de indivíduos com deficiência auditiva autossômica recessiva

PURPOSE To verify the effectiveness of the Cognitive Auditory Evoked Potential-P300 (CAEP-P300) for monitoring the therapeutical evolution of students with developmental dyslexia. METHODS Twenty students diagnosed with developmental dyslexia, of both genders, aged between 8 and 14 years, divided into two randomized groups, one of them submitted to a phonological remediation program associated with reading and writing (GI), and the other one representing the control group (GII), participated in the study. The groups were paired up, and the individuals were submitted to two evaluations of the CAEP-P300 and the same interval was kept for both. Paired Students t-test, ANOVA test, and Pearsons correlation coefficient were used, adopting 5% significance level. RESULTS The statistical comparison of the pre and post evaluations of each group demonstrated difference in the Phonological Awareness Test (p=0.000) and in the P300 latency (p=0.005) only for GI. CONCLUSION CAEP-P300 use for monitoring the therapeutical evolution of children with developmental dyslexia is possible and represents a viable option for intervention programs.PURPOSE To evaluate the cochlear function of parents of individuals with autosomal recessive gene Gap Junction Protein Beta-2 hearing loss by ultra-high frequencies distortion-product otoacoustic emissions (DPOAEs), compared with responses of a control group matched for age and gender. METHODS We studied 56 subjects aged from 20 to 58 years, divided into two groups. The study group comprised 28 parents of hearing-impaired patients due to autosomal recessive inheritance, 14 females aged 20.0-55.0 years (mean 32.8 years) and 14 males aged 20.0-58.0 years (mean 35.2 years). Control group was composed of normal hearing individuals, 14 males and 14 females age-matched to the study group. The subjects underwent tests for audiometry, tympanometry, and DPOAE in the frequency range of 9.000-16.000 Hz. RESULTS We found 64.3% of normal results of DPOAE in the study group compared to 91.1% in the control. There were significant differences between groups in the ears and DPOAE responses, and the mean level of response was in 10 dBNPS in study group and 14 dBNPS in the control. The Pearsons correlation between age and DPOAE in ultra-high frequencies showed no statistical significance. CONCLUSION DPOAE at ultra-high frequencies were able to identify individuals from both groups, suggesting that heterozygous individuals for the Gap Junction Protein Beta-2 gene mutation may have damage to the cochlear function before clinical manifestation in audiometry.

PERDA AUDITIVA EM CRIANÇAS DE 0 A 6 ANOS DE IDADE

Entender as causas das perdas auditivas e as consequencias a que uma crianca esta exposta em decorrencia da privacao auditiva se constitui em uma necessidade. O presente estudo teve por objetivo realizar uma entrevista com duas profissionais especialistas em audiologia, afim de comparar todos obtidos com a literatura, alem de divulgar informacoes visando conscientizar e educar pais, educadores e sociedade em geral para problemas oriundos da perda auditiva. Os dados obtidos indicaram a necessidade do diagnostico precoce da deficiencia auditiva nos primeiros anos de vida, como um fator determinante para o desenvolvimento normal da audicao e da linguagem.

Triagem auditiva neonatal: das alterações auditivas à análise molecular

PURPOSE: to assess the prevalence of hearing loss in a newborn hearing screening program and investigate mutations in the GJB2 gene in those with suspected hearing loss. METHOD: we performed longitudinal study of 908 term infants, post-term and preterm infants who underwent hearing screening by the test Emission Transient Evoked Otoacoustic (EOA-T) and cochlear palpebral reflex. For newborns, those who failed the hearing screening in one or both ears, were referred to a second evaluation. In the retest, while the EOA-T test result in not passing on one or both ears, the child was referred for evaluation and otorhinolaringology management. After completing the Auditory Evoked Potential test, the team of evaluators decided whether it should refer the child to investigate the mutation. When there was suspicion of hearing impairment we collected 3 mL of peripheral venous blood for the detection of mutation in the connexin 26 gene. RESULTS: we observed the presence of conductive hearing loss in 2 neonates (0.22%) and sensorineural in 1 (0.11%). In children with sensorineural hearing loss we detected the presence of 35delG mutation. CONCLUSION: the audiological assessment in conjunction with molecular tests of the main GJB2 gene mutations in newborns with suspected hearing loss contributed to the rapid audiological diagnostic, seeking early intervention, educational and genetic counseling and prognosis of the child.