Correlation between cord blood bilirubin level and incidence of hyperbilirubinemia in term newborns
Abstract
Background Discharging healthy term newborns from thehospital after delivery at increasingly earlier postnatal ages has
recently become a common practice due to medical, social, and
economic reasons, however it contributes to readmission because
of jaundice.
Objective To investigate the correlation between level of cord
blood bilirubin and development of hyperbilirubinemia among
healthy term newborns.
Methods Prospective observational study was performed on
88 healthy term newborns. Cord blood was collected for the
total bilirubin, conjugated bilirubin, unconjugated bilirubin
level measurement and blood group test. Measurements of total
bilirubin, conjugated bilirubin, and unconjugated bilirubin were
repeated on the 5th day with serum sampling, or as soon as the
newborn appeared to be jaundice.
Results Subjects were categorized into hyperbilirubinemia and
non-hyperbilirubinemia newborns. There was a correlation
between cord blood and the 5th day bilirubin level. By ROC
analysis, cord blood bilirubin level of 2:2.54 md/dL was determined to have high sensitivity (90.5%), specificity of 85%, and accuracy of 86.4%.
Conclusions There is a correlation between cord blood bilirubin
level and hyperbilirubinemia in healthy term newborns. Cord
blood bilirubin level at or greater than 2.54 mg/dL can predict
the development of hyperbilirubinemia.
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Accepted 2016-09-12
Published 2009-12-31