Abstract
BackgroundRespiratory distress syndrome (RDS) is a significant cause of preterm neonatal morbidity and mortality globally. Measures like the use of antenatal corticosteroids (ACS) and immediate resuscitation of the newborn after birth are taken to abate preterm related complications. Most studies that evidenced the benefit of ACS were done in high resource settings. Therefore, this study was conducted to assess the effectiveness of ACS in reducing RDS and neonatal mortality in preterm neonates in resource-limited settings.MethodsA three months prospective nested case–control study (1:2 unmatched) was conducted at Muhimbili National Hospital and Amana regional referral hospital in Dar es salaam, Tanzania. Neonates delivered at 28 to 34 gestational weeks were enrolled and followed up until discharge. Data analysis was done using the statistical package of social sciences version 23. Logistic regression analysis was used to determine the effect of ACS on the RDS and mortality in the cohort, controlling for important maternal and neonatal variables. All tests were considered statistically significant at p < 0.05.ResultsOut of 330 preterm neonates enrolled, 110 were cases and 220 were controls. The median gestational age at delivery was 30 weeks and 6 days (IQR 4.68) among cases and 33 weeks (IQR 3) among controls. One-minute APGAR score of < 7 (AOR: 3.11; 95% CI 1.54–6.30), and neonatal birth weight (AOR: 0.998; 95% CI 0.997–0.999) were significantly associated with RDS. No significant association was observed between ACS exposure and RDS occurrence (AOR: 1.65; 95% CI 0.86 – 3.15). The overall mortality rate was 9 per 1000 neonates. Neonatal mortality occurred only among cases whereby, a unit increase in gestational age was associated with a 30% reduction in neonatal mortality (Adjusted hazard ratio, AHR: 0.70, 95% CI: 0.5–0.92, p = 0.011).ConclusionDecrease in gestational age, one minute APGAR score of < 7 and decreasing birth weight were associated with RDS among preterm neonates. ACS was not associated with reduced RDS occurrence and neonatal mortality rates. Moreover, increase in gestation age was the only factor found to be protective against preterm neonatal mortality.
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