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Vol. 88. Issue S2.
Pages 16 (November - December 2022)
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Vol. 88. Issue S2.
Pages 16 (November - December 2022)
Open Access
Language development in children with prelingual deafness from a public cochlear implant program
Alice Lang Silvaa, Isadora Martins da Silva Stumpfb, Laura Prolla Lacroixc, Debora Milena Ferreira Alvesc, Bianca Brinques da Silvab,
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, Adriana Laybauer da Silveirad, Sady Selaimen da Costaa,b, Letícia Petersen Schmidt Rositob,c
a Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
b Serviço de Otorrinolaringologia, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
c Faculdade de Medicina, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
d Serviço de Fonoaudiologia, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS, Brazil
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Introduction: Prelingual deafness has a great impact on communication and, consequently, on cognition, school performance, emotional development and psychosocial well-being. In cases of severe-profound deafness, cochlear implants (CI) may be indicated. Many hospitals provide this treatment in Brazil through the public health system. However, there are few national studies that evaluate the performance of patients implanted in developing countries.

Objective: To evaluate the rate of loss to follow-up in a CI program from the public health system in Southern Brazil as well as the characteristics of hearing loss, sociodemographic, sociocultural and the development of oral language in children with prelingual deafness.

Methods: Retrospective cohort study with children who underwent CI surgery between 2010 and 2020. Data was collected through of interviews and review of medical records. The language development assessment was performed using the MUSS, MAIS and IT-MAIS scales. For the classification of language development we used as parameters the values (mean±SD) found in a previous national study. From those values, the Z score for each patient at each hearing age (time of experience with the CI) was calculated.

Results: Of the 189 children implanted between 2010 and 2020, 129 were included in this study. The rate of loss to follow-up in the program was 31.7%. The mean age at first CI surgery was 40.5 (±16.9) months, with 77.5% of patients having received a unilateral implant. Language results below the expected for hearing age (<Z score −1) for the MAIS score were found in 59.7% of the sample, while for the MUSS score the proportion was 62%.

Conclusions: The high rate of loss to follow-up in the program is a fact that deserves attention together with the low percentage of language development of these patients. Some variables emerge as potential prognostic markers for this population and are in line with findings from other studies in the literature. However, such correlations deserve more attention in prospective and longitudinal analyses.

Keywords: Cochlear implant; Prelingual deafness; Language development disorders.

Brazilian Journal of Otorhinolaryngology (English Edition)

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