Frequência da deficiência auditiva relacionada as infecções congênitas: estudo transversal retrospectivo

Abstract

Introduction: Congenital infections during pregnancy are risk indicators for hearing loss. Purpose: To verify the frequency of hearing loss in children attended at the public service with risk indicators for congenital infections. Methods: This is a retrospective cross-sectional study. The population consisted of children aged 0 to 3 years attended in the period from 2011 to 2019. Consultation and analysis were carried out in the Institution’s database, extracting information from the children regarding the presence of reported congenital infection (cytomegalovirus, herpes, rubella, syphilis, toxoplasmosis, HIV and Zika virus) and the complete audiological diagnosis. The sample of this study consisted of 558 children and the presence of co-occurrence between infections or other risk indicators for hearing loss was analyzed. Descriptive analysis was performed to establish the frequency of hearing loss in relation to each congenital infection isolated or associated with other risk indicators. Results: 14.40% of the children had a report of isolated congenital infection or in combination with another risk indicator. The frequency of hearing loss was 1.25%, with sensorineural hearing loss in six children (85.71%) and a conductive hearing loss (14.29%), of which six were bilateral (85, 71%) and one unilateral (14.29%). This frequency of hearing loss was related to the history of cytomegalovirus (57.14%), followed by toxoplasmosis (28.57%) and rubella with zika virus (14.29%). Conclusion: The frequency of diagnosis of hearing loss was 1.25% in children with reports of congenital infections