Potencial Evocado Auditivo de Tronco Encefálico: padrão de respostas de lactentes termos e prematuros

Casali, Raquel Leme; Santos, Maria Francisca Colella dos

doi:10.1590/s1808-86942010000600011

Cited by 32 publications

(19 citation statements)

References 29 publications

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“…Tais avaliações são complementares, e evidenciam a relevância do PEATE-FE na prática clínica 19 . Para as respostas obtidas entre os gêneros, na frequência de 500 e 2000Hz não foi observada diferença estatisticamente significante, corroborando com estudos semelhantes com estímulo tone burst 26,27 e com outros envolvendo potenciais de tronco encefálico em lactentes 28,29 . Os resultados do presente estudo discordam de alguns autores, os quais relatam que as respostas cocleares podem ser mais rápidas no gênero feminino, influenciando na precocidade observada no tronco encefálico 30 .…”

Section: Correlation Of the Thresholds Of Frequency-specific Brainsteunclassified

Correlação Dos Limiares Do Peate-Fe E Da Audiometria Infantil Em Lactentes Com Perda Auditiva Neurossensorial

et al. 2017

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RESUMOObjetivo: Comparar e correlacionar os níveis mínimos de resposta (NMR) da audiometria infantil em campo livre e os limiares do potencial evocado auditivo de tronco encefálico por frequência especifica (PEATE-FE) em 500 e 2000Hz em lactentes com perda auditiva. Metodologia: Estudo transversal, individual e observacional. Foram avaliados 30 lactentes entre dois e seis meses de idade com perda auditiva neurossensorial. Foram realizadas as seguintes avaliações: otorrinolaringológica, emissões otoacústicas, medidas de imitância acústica, audiometria infantil em campo livre e PEATE-FE, nas frequências de 500Hz e 2000Hz. Resultados: Houve correlação entre os limiares obtidos no PEATE-FE e na audiometria infantil em campo livre nas frequências de 500Hz e 2000Hz. Os limiares do PEATE-FE podem ser considerados estatisticamente iguais aos NMR da audiometria infantil em campo livre. Não houve diferença estatisticamente significante dos resultados entre orelhas e nas diferentes faixas etárias pesquisadas. Conclusão: Houve correlação significante entre os limiares encontrados no PEATE-FE e os NMR obtidos na audiometria infantil em campo livre em lactentes de dois a seis meses de idade com perda auditiva neurossensorial. To compare and correlate the minimum response levels obtained in free field audiometry and the thresholds found in the frequency-specific brainstem auditory evoked potential to 500 and 2000Hz in infants hearing loss. Methodology: This research is characterized as a crossectional, individualy, and observational study. 30 infants aged between 2 and 6 months with sensorineural hearing loss were evaluated. The following assessments were conducted: otorhinolaryngological, otoacoustic emissions tests, acoustic impedance, frequency-specific brainstem auditory evoked potentials, free field children audiometry and frequency-specific brainstem auditory evoked potentials at 500Hz and 2000Hz. Results: A correlation was found between the thresholds obtained in frequency-specific ABR and in free field children audiometry at 500Hz and 2000Hz. There was no significant difference in the results between the ears and in different age groups. Conclusion: There was correlation between the thresholds found in frequency-specific ABR and the MRL obtained in free field audiometry in infants from two to six months with sensorineural hearing loss. Descritores

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Section: Correlation Of the Thresholds Of Frequency-specific Brainsteunclassified

Correlação Dos Limiares Do Peate-Fe E Da Audiometria Infantil Em Lactentes Com Perda Auditiva Neurossensorial

et al. 2017

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“…Clinical use of the auditory brainstem response (ABR) in assessing the integrity of auditory pathways and in the investigation of the electrophysiological threshold is already routine (1,2) . However, using this potential as a prognostic index in various diseases is still object of study in the field of research.…”

Section: Introductionmentioning

confidence: 99%

Auditory brainstem response in gerbils submitted to ischemia and sepsis

Lima

Velasco

Barbeiro

et al. 2015

CoDAS

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Introduction: An ischemic stroke is a clinical condition that affects thousands of people worldwide. As a result of this injury, neuronal death can be observed, and in the natural course of recovery, the individual may develop sepsis. Sepsis is a systemic inflammatory response that can lead the patient to death. To assess the clinical condition of a patient with this condition, the Auditory Brainstem Response (ABR) can be useful, since it is not an invasive procedure, it is a fast technique and it can be done at the bedside. Purpose: To assess auditory brainstem response (ABR) latency values in gerbils subjected to ischemia and sepsis. Methods: ABR values were collected from 72 adult male gerbils, which were divided into six groups: control, sepsis, ischemia, sham, ischemia with sepsis, and sham with sepsis. For the induction of sepsis, lipopolysaccharide (LPS) was applied intraperitoneally in gerbils. The animals were anesthetized with a ketamine/xylazine combination before collection; their ABR were collected before any procedure (base collection), after ischemia, and 24 hours after the application of LPS. The absolute latency of wave IV was evaluated, and the values were compared between groups. Results: There were significant differences in the groups submitted to sepsis in the latency value of wave IV in relation with the other groups. Conclusion: ABR was sensitive to sepsis with the increase in latency of wave IV during the development of the disease in the experimental model used.

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“…Hearing loss occurs in 1-6/1,000 liveborn infants [1,2,3] and may be associated with significant developmental delay in infancy and childhood, including verbal, mental, emotional and social impairments [1,4,5]. Universal newborn hearing screening (UNHS) was recommended by the American Academy of Pediatrics in 1999 [6] and has proved to be safe and effective in the early detection of hearing loss after birth [1,2,4,5,6,7], allowing early intervention and improvement of the verbal development in children with congenital hearing loss [1,5,6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Known risk factors for failure on hearing screening after birth include family history of hearing loss [8,9], malformations of skull, auricle or face [8,9], secretions in external ear canal [10], epidural anesthesia in cesarean section [11], cesarean section [12,13], 5-min Apgar score <5 [3,14], mechanical ventilation >5 days [13], significant hyperbilirubinemia [13,15], early 1st otoacoustic emissions (OAE) <24 h of age [12,16,17], sepsis and meningitis [8,9], gestational age (GA) <33 weeks [8], congenital cytomegalovirus infection [8], severe asphyxia [8], ototoxic medications [8], male gender [12] and small for gestational age (SGA) status [12]. …”

Section: Introductionmentioning

confidence: 99%

“…Sleifer et al [18], Casali and Santos [3] and Coenraad et al [19] performed auditory brainstem response (ABR) tests in neonates and found that maturation of the hearing system after birth in term infants differs significantly from that in premature infants. This led to the recommendation to screen premature infants only after 34 weeks' postmenstrual age [19].…”

Section: Introductionmentioning

confidence: 99%

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Impact of Gestational Age on Neonatal Hearing Screening in Vaginally-Born Late-Preterm and Early-Term Infants

et al. 2013

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Background: Late-preterm and early-term (LP-ET) infants, defined herein as 35⁰-37⁶ weeks' gestation, often fail on 1st otoacoustic emissions (OAE) test. Hypothesis: LP-ET infants fail more than term infants (38⁰-42 weeks' gestation) on the 1st OAE test. Aim: To evaluate the effect of gestational age on the 1st OAE test. Methods: We studied 1,572 vaginally-delivered (VD) infants ≥35 weeks' gestation (1.1.2011-30.9.2011). Perinatal and neonatal variables and results of OAE tests were recorded. Results: LP-ET infants, compared to full-term infants, had a significantly 2-fold higher need for repeated hearing tests: 80.2 versus 43.3 tests/1,000 neonates, respectively (p = 0.026). Univariate analysis showed that late prematurity and age at 1st OAE were significantly associated with failure on 1st OAE. At age 24-42 h, failure on 1st OAE was 2-fold higher in the LP-ET infants than in full-term infants: 9.4 versus 4.7% (p = 0.02). Risk for failure on 1st OAE was age-dependent: 9-fold higher when 1st OAE was performed at 24-42 h of age (5.3%) versus 0.6% after age 42 h. Multivariate analysis showed that variables that were independently significantly associated with failure on 1st OAE included late prematurity (OR 2.0 (1.1-3.7)) and age at 1st OAE (OR 9.2 (1.2-70.7)). Conclusions: Compared to term infants, VD LP-ET infants had 2-fold higher rates of failure on 1st OAE (up to 42 h of life) and needed repeated hearing tests. Failure rates after 42 h become negligible in both groups. In VD LP-ET infants, 1st OAE is better performed after 42 h of age.

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Potencial Evocado Auditivo de Tronco Encefálico: padrão de respostas de lactentes termos e prematuros

Cited by 32 publications

References 29 publications

Correlação Dos Limiares Do Peate-Fe E Da Audiometria Infantil Em Lactentes Com Perda Auditiva Neurossensorial

Correlação Dos Limiares Do Peate-Fe E Da Audiometria Infantil Em Lactentes Com Perda Auditiva Neurossensorial

Auditory brainstem response in gerbils submitted to ischemia and sepsis

Impact of Gestational Age on Neonatal Hearing Screening in Vaginally-Born Late-Preterm and Early-Term Infants

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