Abstract
Background: Blood exchange transfusion (ECT) therapy is an essential part of the modern health care for high-risk icteric neonates. Objectives: Therefore, this study sought to examine the effectiveness of monitoring sodium disorders and the required interventions indicating the overall state of health of hospitalized jaundiced neonates. Methods: This prospective analytic study was performed on 49 neonates diagnosed with severe jaundice undergoing screened exchange blood transfusion from November 2018 to May 2019. Serum sodium ion concentrations testing was performed before the exchange, then 1 - 3 hours later, and again 24 hours after receiving ECT, using a sensitive ELISA kit in a laboratory. Using the newest version of SPSS 24 software program, the association between different numerical variables was calculated by a repeated-measure ANOVA test. P < 0.05 criterion was set as the threshold of significance. Results: Out of the total 49 neonates, 24 (48.5%) were girls and 25 (51.5%) were boys, of which 93.9% and 6.1% were term and preterm-born neonates, respectively. The average birth weight was 2843 ± 267/510 g and the mean period of hospital stay was 4.55 ± 2.399 days. The various causes of severe neonatal jaundice of all the hospitalized cases were 45% unknown, 43% combined ABO and Rh incompatibility, 10% breastfeeding pattern, and 2% G6PD deficiency. A continual fall in serum sodium was observed following banked blood exchange (P < 0.05). However, these reversible changes were outside the expected normal range. Despite a diminished sodium concentration, the mean sodium levels were within the laboratory reference range of serum (137 - 142 mEq/L) in all the three measured duration times. Moreover, variation in the amount of serum sodium was associated with an unknown underlying cause that led to neonatal jaundice (P = 0.04) and this difference did not reach statistical significance in terms of birth weight, gestational age, and other causes accounting for high bilirubin (P > 0.05). Conclusions: Given these facts, it was concluded that neonatal jaundice was significantly associated with post-exchange serum sodium changes within the laboratory reference range of serum.
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