Frequency of hearing loss related to congenital infections: a retrospective study
Hearing Loss. Diagnosis. Congenital. Prevalence
The impact of hearing loss is widely known for its effects on child development. Hearing impairment can be caused by genetic, congenital or acquired factors. Among the congenital factors are the presence of infections that can occur during pregnancy, such as: toxoplasmosis, rubella, cytomegalovirus, herpes, syphilis, HIV and Zika virus. The high fetal and neonatal morbidity and mortality and the presence of important sequelae of affected patients make congenital infections a public health problem and their prevention, diagnosis, monitoring and treatment are necessary before, during and after pregnancy. Objective: To verify the frequency of hearing loss in children attended at the SUVAG Center of RN with risk indicators for congenital infections. Methods: This is a retrospective, observational and descriptive study. The study population consisted of 4806 children aged 0 to 3 years attended at the SUVAG Center of RN in the period from 2011 to 2019. Of this total, 692 children had a history of congenital infections alone or in combination with other risk indicators from the recorded data in the institution's database. 134 were excluded because they did not complete the audiological evaluation. Thus, the sample of this study was composed of 558 children. Descriptive analysis was carried out to establish the frequency of hearing loss in relation to each congenital infection isolated or associated with other risk indicators. Results: The frequency of hearing loss was 1.25% in children with reports and / or confirmation of congenital infections, with the presence of sensorineural hearing loss in six children (85.71%) and conductive hearing loss (14 , 29%), of which six were bilateral (85.71%) and one unilateral (14.29%). Conclusion: The present study allowed us to verify that there was a reduced frequency of hearing loss related to the report of congenital infections.