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  • 1
    Online Resource
    Online Resource
    Electrophysiological study of hearing in full-term small-for-gestational-age newborns
    FapUNIFESP (SciELO) ; 2012
    In:  Jornal da Sociedade Brasileira de Fonoaudiologia Vol. 24, No. 2 ( 2012), p. 162-167
    Details
    In: Jornal da Sociedade Brasileira de Fonoaudiologia, FapUNIFESP (SciELO), Vol. 24, No. 2 ( 2012), p. 162-167
    Abstract: OBJETIVO: Caracterizar as respostas do Potencial Evocado Auditivo de Tronco Encefálico de recém-nascidos a termo pequenos para idade gestacional, comparando-as às de recém-nascidos a termo adequados para idade gestacional, verificando se a condição de pequeno para a idade gestacional é indicador de risco para alteração auditiva retrococlear. MÉTODOS: Este estudo multicêntrico transversal prospectivo avaliou 86 recém-nascidos a termo, sendo 47 pequenos (Grupo Estudo) e 39 adequados para idade gestacional (Grupo Controle), de ambos os gêneros, com idades entre 2 e 12 dias de vida. Foram incluídos os recém-nascidos com presença de emissões otoacústicas evocadas por estímulo transiente e timpanometria tipo A. A análise quantitativa dos dados foi feita baseada na média e desvio-padrão das latências das ondas I, III, V e interpicos I-III, III-V, I-V para cada grupo. Para análise qualitativa, os resultados dos potenciais evocados auditivos foram classificados em alterados ou normais mediante essas análises, considerando-se a faixa etária do recém-nascido no momento do exame. RESULTADOS: No Grupo Estudo, dos 18 (38%) que apresentaram potencial evocado auditivo alterado, nove tiveram como risco auditivo apenas o fato de ser pequeno para a idade gestacional. No Grupo Controle, sete (18%) tiveram alteração. Encontrou-se tendência a alterações centrais no Grupo Estudo do gênero feminino. No Grupo Controle, houve tendência a alterações no gênero masculino. CONCLUSÃO: Crianças a termo, nascidas com peso adequado ou pequenas para a idade gestacional, podem apresentar alterações auditivas de caráter central, transitórias ou permanentes, independente da presença de indicadores de risco auditivo.
    Type of Medium: Online Resource
    ISSN: 2179-6491
    URL: Article
    DOI: 10.1590/S2179-64912012000200013
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2012
    detail.hit.zdb_id: 2612086-0
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  • 2
    Online Resource
    Online Resource
    Caracterização eletrofisiológica da audição em prematuros nascidos pequenos para a idade gestacional
    FapUNIFESP (SciELO) ; 2013
    In:  CoDAS Vol. 25, No. 1 ( 2013), p. 22-28
    Details
    In: CoDAS, FapUNIFESP (SciELO), Vol. 25, No. 1 ( 2013), p. 22-28
    Abstract: PURPOSE: To characterize the Auditory Brainstem Response (ABR) of small for gestational age preterm newborns and to compare the findings to those of appropriate for gestational age premature newborns in order to verify whether the small for gestational age condition is a risk factor for hearing loss. METHODS: This prospective cross-sectional multicenter study evaluated 72 preterm newborns of both genders (35 small and 37 appropriate for gestational age), who were born at 30 to 36 weeks of gestational age and were evaluated before hospital discharge. Only newborns with present transient evoked otoacoustic emissions and tympanometry type A were included. The ABR was performed with click stimuli. The quantitative data analysis was performed using mean and standard deviation measures for each group. For qualitative analysis, the ABR results were classified as normal or altered according to the absolute latencies of waves I, III, V and interpeaks I-III, III-V, I-V. The analysis was carried out considering the age of the newborn at the time of examination. RESULTS: Alterations were evident in 32 newborns (44.44%), being 15 small (43%) and 17 appropriate for gestational age (46%), with no between-groups difference. Of the 15 small for gestational age newborns with altered ABR, six presented as auditory risk only the small for gestational age condition. In the group of adequate for gestational age newborns, there was a higher occurrence of alteration in males. CONCLUSION: There was no difference in responses of auditory evoked potential between small and appropriate for gestational age preterm newborns. Therefore, the condition does not behave as a risk factor for retrocochlear impairment.
    Type of Medium: Online Resource
    ISSN: 2317-1782
    URL: Article
    DOI: 10.1590/S2317-17822013000100005
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2013
    detail.hit.zdb_id: 3070303-7
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  • 3
    Online Resource
    Online Resource
    A study on otoacoustic emissions and supression effects in patients with Vitiligo
    Elsevier BV ; 2009
    In:  Brazilian Journal of Otorhinolaryngology Vol. 75, No. 1 ( 2009-01), p. 111-115
    Details
    In: Brazilian Journal of Otorhinolaryngology, Elsevier BV, Vol. 75, No. 1 ( 2009-01), p. 111-115
    Type of Medium: Online Resource
    ISSN: 1808-8694
    URL: Article
    DOI: 10.1016/S1808-8694(15)30841-7
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2009
    detail.hit.zdb_id: 2105179-3
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  • 4
    Online Resource
    Online Resource
    Portadores de vitiligo: estudo das emissões otoacústicas e efeito de supressão
    FapUNIFESP (SciELO) ; 2009
    In:  Revista Brasileira de Otorrinolaringologia Vol. 75, No. 1 ( 2009-02), p. 111-115
    Details
    In: Revista Brasileira de Otorrinolaringologia, FapUNIFESP (SciELO), Vol. 75, No. 1 ( 2009-02), p. 111-115
    Abstract: Vitiligo is a skin disease characterized by absence of melanin due to melanocytes destruction. AIM: to study the incidence of hearing alterations in patients with vitiligo. METHOD: prospective audiological evaluation, transient-evoked otoacoustic emission recordings and study the effects of suppression in 24 patients with vitiligo. Their ages ranged from 15 to 45 years. RESULTS: 21 patients (87.5%) had normal audiometry; 2 had unilateral hearing loss in the high frequencies and 1 had cochlear moderate hearing loss in the left ear. Of these 21 subjects, 66.7% had no otoacoustic emissions, suggesting cochlear dysfunction. Only 7 patients had otoacoustic emissions present in all frequencies (29.2%) and 17 (70.8%) did not have them, and the highest rate of no otoacoustic emissions happened in the right ear of males. Regarding the suppression study, 6 subjects failed, all of them were females, and their left ears were the most affected. CONCLUSION: the findings show that patients with vitiligo, particularly males, have a greater predisposition to cochlear dysfunction, especially in the right ear. As far as the suppression effect was concerned, there was a greater alteration in the female efferent system, particularly in the left ear. Hearing alterations did not vary as far as age is concerned, type of vitiligo and time of disease progression.
    Type of Medium: Online Resource
    ISSN: 0034-7299
    URL: Article
    DOI: 10.1590/S0034-72992009000100018
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2009
    detail.hit.zdb_id: 2105179-3
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  • 5
    Online Resource
    Online Resource
    PEATE automático em recém nascidos de risco: estudo da sensibilidade e especificidade
    FapUNIFESP (SciELO) ; 2011
    In:  Revista CEFAC Vol. 14, No. 2 ( 2011-07-08), p. 223-233
    Details
    In: Revista CEFAC, FapUNIFESP (SciELO), Vol. 14, No. 2 ( 2011-07-08), p. 223-233
    Abstract: PURPOSE: to study the sensitivity and specificity of automatic ABR in comparison to diagnostic ABR of newborns under risk in a neonatal hearing screening program. METHOD: one hundred and eighty six neonates were evaluated, 83 born at term and 103 were pre terms, 88 male and 98 female gender. Evaluation procedures consisted of transient otoacoustic emissions(TOAEs), A-ABR and diagnostic ABR carried out in the same week. RESULTS: from the 186 evaluated newborns, 156 (83.9%) showed normal hearing. Conductive hearing loss was verified in nine neonates (4.8%), seven bilateral and two unilateral. Cochlear hearing loss was observed in five neonates (2.7%), one unilateral and four bilateral. Central evidences were observed in eleven neonates (5.9%) and one neonate was diagnosed with auditory neuropathy spectrum disorder (0,5%). In four cases, we found a maturational delay in the first evaluation with normal result within one month. In the comparison of A-ABR with diagnostic ABR, high sensitivity rates were observed (99% and higher) in the identification of cochlear, conductive, central and auditory neuropathy. Specificity rate of A-ABR was 100% for auditory neuropathy, 75% for right ear and 60% for left ear cochlear hearing losses and 54.5% for right ear and 63.6% for the left ear central abnormalities. For conductive hearing losses, specificity was low (lower than 43%). CONCLUSION: A-ABR was efficient in the identification of auditory neuropathies with high sensitivity and specificity rates. However, false negative responses were observed in the group diagnosed with cochlear and conductive hearing losses, central abnormalities and maturational delay.
    Type of Medium: Online Resource
    ISSN: 1982-0216
    URL: Article
    DOI: 10.1590/S1516-18462011005000065
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2011
    detail.hit.zdb_id: 2432165-5
    SSG: 7,36
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  • 6
    Online Resource
    Online Resource
    Triagem auditiva neonatal com emissões otoacusticas e reflexo cocleo-palpebral: estudo da sensibilidade e especificidade
    FapUNIFESP (SciELO) ; 2011
    In:  Revista CEFAC Vol. 14, No. 5 ( 2011-10-14), p. 844-852
    Details
    In: Revista CEFAC, FapUNIFESP (SciELO), Vol. 14, No. 5 ( 2011-10-14), p. 844-852
    Abstract: PURPOSE: to study the specificity and sensitivity of NHS with otoacoustic emissions transient stimulus (TEOAE) associated with cochlear-palpebral reflex (CPR), and comparing the results of Auditory Evoked Potential (BAEP). METHOD: three hundred and sixty-nine neonates under risk of hearing loss were evaluated. Evaluation procedures consisted of transient otocoustic emissions(TOAEs), cochlear-palpebral reflex (CPR), and ABR diagnostic carried out in the same week. RESULTS: the incidence in the general population was 4 neonates (1.1%) with cochlear hearing loss, 22 (5.9%) with conductive hearing loss, 2 (0.5%) with auditory neuropathy, 14 (3.8%) with central abnormalities and 15 (4.1%) with delayed maturation of the auditory pathway. The TAN showed 100% sensitivity and 94.6% specificity in detecting the spectrum of cochlear and auditory neuropathy, 77.3% sensitivity and 94.6% specificity in detecting conductive and 42.9% and 94.6% specificity while detecting central abnormalities. All findings showed statistically significant differences when compared to normal auditory neonates. CONCLUSION: this protocol was effective to detect in neonates with cochlear hearing loss and auditory neuropathy with high sensitivity and specificity.
    Type of Medium: Online Resource
    ISSN: 1982-0216
    URL: Article
    DOI: 10.1590/S1516-18462011005000108
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2011
    detail.hit.zdb_id: 2432165-5
    SSG: 7,36
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  • 7
    Online Resource
    Online Resource
    Avaliação eletrofisiológica da audição em gagos, pré e pós terapia fonoaudiológica
    FapUNIFESP (SciELO) ; 2009
    In:  Pró-Fono Revista de Atualização Científica Vol. 21, No. 2 ( 2009-06), p. 95-100
    Details
    In: Pró-Fono Revista de Atualização Científica, FapUNIFESP (SciELO), Vol. 21, No. 2 ( 2009-06), p. 95-100
    Abstract: BACKGROUND: stuttering is a speech fluency disorder. Auditory evoked potentials (AEP) are electrophysiological tests that are being used as an instrument to establish the diagnosis of several disorders as well as to assess therapeutic outcomes. AIM: 1 - to characterize the AEP of individuals with stuttering in comparison to a control group; 2 - to verify the amelioration of these potentials post speech-language treatment. METHOD: the research sample was composed by 8 adult males with stuttering - research group (RG), with ages ranging from 18 to 30 years, and 8 normally fluent adult males - control group (CG), within the same age range. Each group was assessed twice through brainstem auditory evoked response (BAER), middle latency response (MLR) and P300; assessments were carried out with a three months interval. RESULTS: pre therapeutic outcomes - altered BAER results in one individual of the RG; altered MLR results in two individuals of the RG and in one individual of the CG; altered P300 results in two individuals of the RG. Comparison between pre and post speech-language treatment results indicate: BAER - decrease in wave I latency in 66.7% of the ears in the RG; MLR - a 16.7% decrease in wave PA latency in C3 for the RG; P300 latency decreased by 58.7% in both groups. CONCLUSION: the findings of this study indicate that MLR and P300 were the potentials that better characterized both groups and the three AEP expressed the neural plasticity post-speech-language treatment.
    Type of Medium: Online Resource
    ISSN: 0104-5687
    URL: Article
    DOI: 10.1590/S0104-56872009000200002
    Language: Unknown
    Publisher: FapUNIFESP (SciELO)
    Publication Date: 2009
    detail.hit.zdb_id: 2238039-5
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