Avaliação auditiva por meio de potencial evocado auditivo em lactentes com indicadores de risco para deficiência auditiva. Qual a importância no diagnóstico e prognóstico?
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Data
2011-03-01
Autores
Silva, Daniela Polo Camargo da [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A triagem auditiva neonatal universal deve ser realizda por meio das emissões otoacústicas e/ou potencial evocado auditivo de tronco encefálico (PEATE). Dados da literatura ainda não são conclusivos quanto a influência do processo maturacional do sistema auditivo sobre as respostas do PEATE em recém-nascidos a termo e pré-termo. Realizar estudo longitudinal em neonatos e lactentes a termos e pré-termos, com ao menos um indicador de risco para deficiência auditiva conforme estabelecido pelo Joint Committee on Infant Hearing, para identificar quais deles influenciam os registros do PEATE com o avanço da idade cronológica. Participaram do estudo 126 lactentes atendidos no programa de Triagem Auditiva Neonatal Universal do Hospital das Clínicas da Faculdade de Medicina de Botucatu, que realizaram o PEATE em dois momentos, o primeiro após a alta hospitalar e o segundo com seis meses de vida. As crianças foram divididas em 3 grupos: G1: 39 lactentes que nasceram com idade gestacional (IG) ≥ a 37 semanas; G2: 53 lactentes que nasceram com idade gestacional entre 31 a 36 semanas e G3: 34 lactentes que nasceram com idade gestacional < a 31 semanas. Os indicadores que mais influenciaram o PEATE foram a idade gestacional, peso ao nascimento abaixo de 1500g, o Apgar baixo de quinto minuto e a permanência em Unidade de Terapia Intensiva (UTI) e observamos que quanto menor a IG, maior foi a redução média e mediana das latências absolutas e interpicos. Para os lactentes que tiveram peso ao nascimento menor que 1500g observou-se uma redução média e mediana maior em relação a latência interpico III-V na orelha direita e latência absoluta na onda V na orelha esquerda. Quanto a influência do Apgar de primeiro minuto, percebeu-se uma redução maior da latência absoluta na onda V da orelha esquerda. Já entre os lactentes que apresentaram Apgar menor que 6 no quinto minuto a redução...
The universal newborn hearing screening should be performed by otoacoustic emissions and/or auditory brainstem response (ABR). Several works are not conclusive regarding the influence of the auditory system maturarional on the responses of ABR in infants at term and preterm. To attain longitudinal studies in infants at term and preterm with at least one risk indicator for deafness, according to established by Joint Committee on Infant Hearing, in order to identify which of those indicators altered the auditory brainstem response with advancing chronological age. One hundred and twenty six infants who were attended in the Universal Hearing Screening Programs of Hospital das Clinicas da Faculdade Medicina de Botucatu, participated in the study when ABR was proceeded in two moments, the first one after discharging from hospital and the second one six months old. The children were divided in three groups - G1 - 39 (thirty-nine) infants who were born > a 37 (thirty-seven) weeks of gestational age, - G2 - 53 (fifty-three) infants who were born between 31 (thirty-one) and 36 (thirty-six) weeks of gestational age and G3 –34 (thirty-four) infants who were born < 31 (thirty-one) weeks of gestational age. The risk indicators that most altered the ABR response were gestational age, birth weight below 1500g, the low Apgar score at fifth minute and stay in the Intensive Care Units and we found that the less gestational age the higher was the medium and median reduction of the absolute latency and interpeaks. The infants who were born with less than 1500g it was observed a higher medium and median reduction concerning the latency interpeaks III - V in the right ear and absolute latency in V wave in the left ear. As to Apgar influence in the first minute it was observed a higher reduction of the absolute latency in the V wave of the left ear. On the other hand, the infants... (Complete abstract click electronic access below)
The universal newborn hearing screening should be performed by otoacoustic emissions and/or auditory brainstem response (ABR). Several works are not conclusive regarding the influence of the auditory system maturarional on the responses of ABR in infants at term and preterm. To attain longitudinal studies in infants at term and preterm with at least one risk indicator for deafness, according to established by Joint Committee on Infant Hearing, in order to identify which of those indicators altered the auditory brainstem response with advancing chronological age. One hundred and twenty six infants who were attended in the Universal Hearing Screening Programs of Hospital das Clinicas da Faculdade Medicina de Botucatu, participated in the study when ABR was proceeded in two moments, the first one after discharging from hospital and the second one six months old. The children were divided in three groups - G1 - 39 (thirty-nine) infants who were born > a 37 (thirty-seven) weeks of gestational age, - G2 - 53 (fifty-three) infants who were born between 31 (thirty-one) and 36 (thirty-six) weeks of gestational age and G3 –34 (thirty-four) infants who were born < 31 (thirty-one) weeks of gestational age. The risk indicators that most altered the ABR response were gestational age, birth weight below 1500g, the low Apgar score at fifth minute and stay in the Intensive Care Units and we found that the less gestational age the higher was the medium and median reduction of the absolute latency and interpeaks. The infants who were born with less than 1500g it was observed a higher medium and median reduction concerning the latency interpeaks III - V in the right ear and absolute latency in V wave in the left ear. As to Apgar influence in the first minute it was observed a higher reduction of the absolute latency in the V wave of the left ear. On the other hand, the infants... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Disturbios da audição - Diagnóstico, Disturbios da audição - Prognóstico, Eletrophysiology
Como citar
SILVA, Daniela Polo Camargo da. Avaliação auditiva por meio de potencial evocado auditivo em lactentes com indicadores de risco para deficiência auditiva. Qual a importância no diagnóstico e prognóstico?. 2011. 94 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, 2011.