Navegando por Palavras-chave "Brain Stem"

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    Auditory pathway maturational study in small for gestational age preterm infants
    (Sociedade Brasileira de Fonoaudiologia, 2014-07-01) Angrisani, Rosanna Giaffredo; Diniz, Edna Maria Albuquerque; Guinsburg, Ruth [UNIFESP]; Ferraro, Alexandre Archanjo; Azevedo, Marisa Frasson de [UNIFESP]; Matas, Carla Gentile; Universidade de São Paulo (USP); Universidade Federal de São Paulo (UNIFESP)
    PURPOSE:To follow up the maturation of the auditory pathway in preterm infants small for gestational age (SGA), through the study of absolute and interpeak latencies of auditory brainstem response (ABR) in the first six months of age.METHODS:This multicentric prospective cross-sectional and longitudinal study assessed 76 newborn infants, 35 SGA and 41 appropriate for gestational age (AGA), born between 33 and 36 weeks in the first evaluation. The ABR was carried out in three moments (neonatal period, three months and six months). Twenty-nine SGA and 33 AGA (62 infants), between 51 and 54 weeks (corrected age), returned for the second evaluation. In the third evaluation, 49 infants (23 SGA and 26 AGA), with age range from 63 to 65 weeks (corrected age), were assessed. The bilateral presence of Transient Evoked Otoacoustic Emissions and normal tympanogram were inclusion criteria.RESULTS:It was found interaural symmetry in both groups. The comparison between the two groups throughout the three periods studied showed no significant differences in the ABR parameters, except for the latencies of wave III in the period between three and six months. As for the maturation with tone burst 0.5 and 1 kHz, it was found that the groups did not differ.CONCLUSION:The findings suggest that, in the premature infants, the maturational process of the auditory pathway occurs in a similar rate for SGA and AGA. These results also suggest that prematurity is a more relevant factor for the maturation of the auditory pathway than birth weight.
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    Avaliação das funções auditivas de tronco encefálico em mulheres com migrânea vestibular
    (Universidade Federal de São Paulo (UNIFESP), 2017-05-30) Takeuti, Alice Andrade [UNIFESP]; Gananca, Fernando Freitas [UNIFESP]; Fávero, Mariana Lopes [UNIFESP]; http://lattes.cnpq.br/1322292250778433; http://lattes.cnpq.br/0831776469482702; http://lattes.cnpq.br/8227115816175703; Universidade Federal de São Paulo (UNIFESP)
    Aim: Assess auditory brainstem functions in patients with vestibular migraine (VM) using electrophysiological exams, contralateral acoustic reflex (AR) and loudness discomfort level (LDL). Methods: The study group (SG) consisted of 29 women with vestibular migraine and the control group (CG) by 25 healthy women. Auditory brainstem response (ABR), frequency following response (FFR), binaural interaction component (BIC) and assessment of contralateral efferent suppression were performed. The threshold of discomfort (LDL) and the contralateral acoustic reflex were also investigated. The results were compared between groups. Results: There was a statistically significant difference between the groups for FFR and LDL. Conclusions: Patients with VM present alterations in the brainstem auditory functions and a mild hyperacusis in the intercrises period.