Determinants of birth asphyxia among neonates admitted to neonatal intensive care units in hospitals of the Wolaita zone, Southern Ethiopia: A case-control study

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Background Birth asphyxia, according to the World Health Organization (WHO), is the inability of breathing to start and continue automatically at birth. Blood-gas exchange is impaired, which results in increased hypoxia, hyperapnea, and substantial metabolic acidosis. The aim of this study was to determine the factors contributing to birth asphyxia in infants admitted to neonatal intensive care units in hospitals in the Wolaita Zone. Methods An institution-based, unmatched case-control study among neonates admitted to neonatal intensive care units in Wolaita Zone hospitals was conducted from March 1 to April 15, 2021. With 148 cases and 294 controls and a case-to- control ratio of 1:2, a sample size of 442 was determined. The pre-tested and structured Open Data Kit collect mobile application (v1.26.1) was used to collect the data, and SPSS version 25 was used for analysis. Using adjusted odd ratios and their corresponding 95 % confidence intervals, bivariate and multivariable logistic regression analyzes were performed. Results A total of 143 cases and 286 controls were included making. the response rate 97 %. Meconium or blood-stained amniotic fluid (AOR = 5.43, 95%CI:3.10–9.50), mothers who experienced any of dangerous symptom during pregnancy (AOR = 3.71, 95%CI: 1.56–8.65), premature rupture of membrane (AOR = 3.12, 95%CI: 1.42–6.83), hypothermic newborn (AOR = 4.57, 95CI: 1.77–11.81), labor not supported by Basic Emergency Obstetric and Neonatal Care (BEMONC) trained health professional (AOR = 3.23, 95%CI: 1.83–5.71), birth weight of less than 2500 gm (AOR = 2.68, 95%CI: 1.04-6.92), sub-standard filling of partograph (AOR = 4.03, 95%CI: 2.19–7.41), not filling on partograph during follow-up (AOR = 8.16, 95%CI: 2.24-29.66) and assisted vaginal delivery (AOR = 1.87, 95%CI:1.03–3.39 ) were identified as determinants of birth asphyxia. Conclusion In this study, fetal conditions such as hypothermia and low birth weight, changes in the color of amniotic fluid, dangerous pregnancy symptoms, membrane rupture, standard filling of the partograph, and BEMONC training were factors that predicted birth asphyxia. Therefore, prompt and effective management of fetal and maternal problems and as well as the development of health professionals' BEMONC competence are crucial.

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