Case history factors and audiological screening outcomes in HEU and HIV unexposed neonates at a district level hospital in Gauteng, South Africa

Abstract

While progress has been made in reducing vertical Mother to Child Transmission (MTCT) of HIV, limited research exists on the health needs of HIV-exposed uninfected (HEU) neonates, particularly in the field of audiology. This lack of research and evidence could impact early detection and intervention efforts. This study aimed to establish relationships and compare outcomes between case history factors and audiological screening results in HEU and HIV-unexposed neonates at a district-level hospital in Gauteng, South Africa. A non-experimental quantitative, descriptive, cross-sectional, comparative research design was employed. Data was collected with a sample size of 212 participants (100 HEU, 112 HIV-unexposed neonates) recruited using quota sampling. The hearing screening process involved case history assessment, medical file review, otoscopy, tympanometry testing, Distortion Product Evoked Otoacoustic Emissions (DPOAE), and Automated Auditory Brainstem Response (AABR) measurements. Descriptive and inferential statistics, including measures of central tendency and parametric tests, were used for data analysis. The findings indicated that 43% of HEU neonates exhibited refer findings on DPOAE, and 43% on AABR, compared to 26% and 25% respectively in the HIV-unexposed neonatal group. Therefore, a statistically significant relationship was established when comparing audiological results between the HEU and HIV-unexposed groups. Case history factors such as mode of delivery, birth weight, and Apgar scores were not associated with hearing loss in either group. However, in the HEU group, a higher proportion of participants referred on the overall screening in the maternal Retroviral Disease (RVD) stage IV group, although statistical significance was not established. This study fills an evidence gap regarding HEU neonates and highlights the need to include this vulnerable population in policy and clinical guidelines related to early hearing detection, intervention, and preventive audiology initiatives.