de Araújo Lucas Rodrigues P, Pereira Lauris JR, Schochat E. Efferent inhibitory effect observed in otoacoustic emissions and auditory brainstem response in the neonatal population.
Folia Phoniatr Logop 2014;
65:208-13. [PMID:
24503960 DOI:
10.1159/000356474]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE
To characterize the inhibitory effect (IE) in the otoacoustic emission (OAE) and auditory brainstem response (ABR) in newborns at high and low risk for hearing loss.
DESIGN
Cross-sectional study.
PATIENTS AND METHODS
Seventy-nine newborns at low risk for hearing loss and 46 at high risk underwent transient evoked OAE (TEOAE), distortion product OAE (DPOAE) and ABR testing with or without the presence of contralateral white noise presented at a level of 60 dB SPL.
RESULTS
For both low- and high-risk newborns, there were no significant differences in IE between the left and right ears. There was a statistically significant difference in the right-ear IE between the low- and high-risk group for DPOAE and ABR testing. There was also greater agreement of the efferent system evaluation outcomes between TEOAE and ABR.
CONCLUSIONS
ABR testing detected IE in a greater number of newborns in the low-risk, as compared to the high-risk group.
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