Rhesus Negativity Prevalence and Neonatal Outcomes among Pregnant Women Delivered at Bule Hora University Teaching Hospital, West Guji Zone, South Ethiopia.

Background: Rh incompatibility has been an important cause of severe neonatal hyperbilirubinemia, hydrops fetalis, and stillbirth. Among those outcomes, neonatal jaundice is the most common problem.

Objective: The study is assessed the prevalence of Rhesus (Rh) negativity and neonatal outcomes among pregnant women who delivered at Bule Hora University Teaching Hospital over a 5-year period from January 2017 to December 31, 2022.

Methods: A retrospective study was conducted on 110 women who delivered at Bule Hora University Teaching Hospital (BHUTH) from January 2017 to December 31, 2021. The complete data of the mother's and neonates' status were extracted from the registration book of the hospital using checklists. The data were double entered using EpiData version 3 and exported to the Statistical Package for Social Sciences (SPSS) version 26 for analysis. Descriptive statistics to determine prevalence and frequencies were used to describe the study population in relation to relevant variables, and the results are presented in tables and charts.

Results: The study shows that the prevalence of Rh D-negative among women who delivered was 6.4% [95% CI: 1.83,10.98]. Among Rh-negative women, 1 (25%) of blood group AB, 3 (6.5%) of blood group O, and 2 (6.1%) of blood group A were Rh-D negative. The distributions of O, A, B, and AB blood groups among pregnant women who delivered this hospital were 41.8%, 30%, 24.6%, and 3.6%, respectively. Out of neonates born to Rh-negative women, 1 (14.3%) was born with jaundice. Of women who delivered at BHUT hospital, 61 (55.5%) did not have a previous delivery, 7 (6.4%) had a previous abortion, 5 (4.5%) stillbirth, 1 (0.9) died after birth, 4 (3.6%) had a birth child weight less than 2.6 kg.

Conclusion: The study revealed that the prevalence of Rh-negative was comparable with finding of different similar studies. To reduce Rh incompatibility-related HDN, the government should educate mothers and encourage them as they follow ANC facilities and after delivery to health facilities.