Evaluation of the effectiveness of newborn hearing screening program in Zahedan: A cross-sectional study

Abstract

Introduction: Hearing loss is one of the most common congenital disorders. The prevalence of this disorder in different communities has been reported between 3.5 to 9 percent, which can have adverse effects on language learning, communication, and education of children. Also, early diagnosis of this disorder in newborns is not possible without the use of hearing screening. Therefore, the aim of this study was to evaluate the effectiveness of newborn hearing screening programs in Zahedan. Method: In this cross-sectional observational study, all babies born in the maternity hospitals of Zahedan city (maternity hospitals of Nabi Akram, Imam Ali, and Social Security hospitals) in 2020, were examined. In order to conduct the study, TEOAE was initially performed for all neonates. Then, based on the results obtained in the ODA test and in case of unsatisfactory response, cases were referred for re-evaluation. Infants who were rejected again in the second stage were immediately subjected to the AABR test and if they failed in this test, they were also subjected to a diagnostic ABR test. Results: Based on our results, 7700 infants were first evaluated with the OAE test. Of these, 580 (8%) had no OAE response. Out of 580 infants rejected in the first stage, 76 infants were also rejected in the second stage; Among them, 8 infants were re-diagnosed with hearing impairments. Finally, out of 3 infants who were diagnosed with hearing loss, 1 (33%) had conductive hearing loss and 2 (67%) had sensorineural hearing loss. Conclusion: Based on the findings of the present study, the implementation of a comprehensive neonatal hearing screening program is necessary for the timely and early diagnosis and treatment of hearing loss. Also, screening can improve the health of children and their personal, social, and educational development in the future. Keywords: Hearing screening, hearing loss, newborns, OAE, AABR