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[Hyperbilirubinemia in normal neonates]
Insights
Neonatal hyperbilirubinemia (high serum bilirubin) affects 17.7% of healthy newborns, with 5.3% requiring phototherapy. This study highlights significant increases in these conditions and individual variations in bilirubin metabolism adaptation.
Area of Science:
- Neonatology
- Pediatric Endocrinology
- Clinical Chemistry
Context:
- Investigated a cohort of 13,449 neonates with birth weights ≥2500g.
- Excluded neonates with Rh or ABO blood group incompatibility.
- Monitored serum bilirubin levels and phototherapy treatment over a ten-year period.
Purpose:
- To analyze the incidence and trends of neonatal hyperbilirubinemia and phototherapy.
- To identify demographic factors, such as sex, associated with hyperbilirubinemia.
- To explore individual variations in bilirubin metabolism adaptation in healthy term neonates.
Summary:
- A significant rise in serum bilirubin (>205 µmol/l) was observed in 17.7% of neonates, with 5.3% receiving phototherapy.
- The frequency of hyperbilirubinemia and phototherapy demonstrated a significant increasing trend over the ten-year study duration.
- Boys were significantly predominant among neonates with hyperbilirubinemia and those undergoing phototherapy.
- Serum bilirubin level development showed considerable individual variations in pattern, peak value, and timing, indicating diverse adaptation rates of bilirubin metabolism.
Impact:
- Provides crucial data on the prevalence and trends of neonatal jaundice in a large cohort.
- Highlights the significant role of sex in the occurrence of hyperbilirubinemia.
- Emphasizes the wide range of individual variability in bilirubin metabolism, even in healthy term infants.
- Informs clinical practice regarding monitoring and management of neonatal hyperbilirubinemia.
Abstract:
In a group of 13,449 neonates with a birth weight of 2500 g or more and without an incompatible constellation with the mothers in the Rh and ABO system in 17.7% of the children a rise od serum bilirubin above 205 mumol/l was found and 5.3% of the children were treated by phototherapy. The frequency of hyperbilirubinaemias and phototherapy in the course of the ten-year investigation rose significantly. Among neonates with hyperbilirubinaemia and those having phototherapy boys predominate significantly. The development of serum bilirubin levels differs as to the course, maximum value and period of the peak and suggests that also in normal mature neonates the rate of adaptation of the bilirubin metabolism displays great individual variations.