Evaluation of neonatal jaundice based on the severity of hyperbilirubinemia

Effects of Phototherapy on the Serum Magnesium Level in Neonates with Indirect Hyperbilirubinemia: A Prospective Cohort Study

Objectives

Neonatal jaundice or hyperbilirubinemia is one of the common findings in neonatal medicine. Severe disease can cause neurological damage and even Kernicterus. Magnesium ion is the most important N-methyl-D-aspartate receptor antagonist. The most commonly used treatment for jaundice is phototherapy, but the effect of phototherapy on serum magnesium is less investigated. In this study, we aim to investigate the effects of phototherapy on total serum magnesium levels in icteric neonates.

Methods

This prospective cohort study was carried out on 160 neonates with jaundice referring to the Besat Hospital of Hamadan. Based on the bilirubin level, newborns were divided into three subgroups of mild, moderate, and severe disease which were subjected to single, double, and intensive phototherapy, respectively. Serum bilirubin and magnesium levels were measured before and after phototherapy and compared using parametric tests.

Results

Subjects have a mean intrauterine age of 38.8 weeks and a jaundice onset age of 3.8 days. In all groups, serum magnesium levels were within the normal range before phototherapy. After phototherapy, on the other hand, the most reduction of total serum magnesium was in the double phototherapy group, which was −0.13 ± 0.42 mg/dl (P = 0.018). The change in serum magnesium level was not significant in the single phototherapy (−0.02 ± 0.25) and intensive phototherapy (−13.55 ± 2.73) groups (P > 0.05).

Conclusion

In the present study, serum magnesium did not increase significantly before the treatment in three groups. After treatment, a significant reduction was seen in the double phototherapy group.

Biological basis of child health 9: development of the liver and clinical features of childhood liver disease

This article is the ninth in a series on the biological basis of child health and follows on from the previous article, which discussed the gastrointestinal system. The liver is the largest solid organ in the body and has more than 500 functions. These functions include: producing bile, which serves as a vehicle for waste products and as an aid for the digestion of dietary fat; synthesising most coagulation factors, needed in the clotting cascade; and transforming glycogen into glucose for use as energy in cell metabolism. While most liver conditions seen in children are rare, it is important that children's nurses can identify the clinical features of childhood liver disease. This article provides an overview of the embryological development of the liver, its anatomy and functions, liver function tests in children, and the clinical features and pathophysiology of childhood liver disease.