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Audiology - Communication Research

versão On-line ISSN 2317-6431

Resumo

CARRICO, Barbara et al. Peripheral hearing evaluation in children with Down syndrome. Audiol., Commun. Res. [online]. 2014, vol.19, n.3, pp.280-285. ISSN 2317-6431.  https://doi.org/10.1590/S2317-643120140003000012.

Purpose

This study sought to characterize the peripheral auditory system of individuals with Down syndrome (DS) using conventional and high-frequency audiometry.

Methods

We performed a cross-sectional and observational study. Fifteen individuals with DS, who were of both genders and between 7 and 15 years of age, participated in this study. The following procedures were performed: otoscopy, tympanometry with ipsilateral and contralateral acoustic reflex, pure-tone audiometry, vocal audiometry and high-frequency audiometry.

Results

There was a predominance of mild conductive hearing loss in one or both ears. The mean hearing thresholds for conventional audiometry were below 20 dB HL and between 20 and 40 dB HL for high-frequency audiometry. The Pearson correlation coefficient indicated a moderate positive correlation between the 9-14 kHz thresholds and age.

Conclusion

Overall, no significant differences were observed when comparing the right and left ears of individuals with DS, in regards to pure-tone audiometry, immittance testing and speech audiometry. Most children showed middle ear abnormalities and conductive hearing loss. Moreover, high-frequency audiometry suggested the onset of impaired cochlear function, which may be associated with frequent otitis media episodes and/or early cochlear degeneration.

Palavras-chave : Hearing; Audiometry; Down syndrome; Auditory threshold; Hearing loss; high-frequency.

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