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  • Title: Umbilical Cord Blood Bilirubin, Albumin, Reticulocyte Count, and Nucleated Red Blood Cells to Predict Subsequent Hyperbilirubinemia in Term Neonates: A Prospective Observational Study.
    Author: Chakrahari S, Patil M, Bijapure HR.
    Journal: Cureus; 2023 Apr; 15(4):e37598. PubMed ID: 37197121.
    Abstract:
    INTRODUCTION: Hyperbilirubinaemia is one of the most important causes of re-admission in the early neonatal period. The socioeconomic factors are one of the most common reasons for early discharge in a developing country like India. OBJECTIVES: This study aims to evaluate and analyze the statistical correlation of umbilical cord blood bilirubin, albumin, nucleated red blood cells (nRBC), and reticulocyte count as early predictors of neonatal hyperbilirubinemia. METHOD: A prospective observational study was conducted from November 2015 to April 2017 in a tertiary care hospital in North Karnataka, India. Umbilical cord blood was collected at birth for analysis of bilirubin, albumin, reticulocyte count, and nRBC in term neonates. Total serum bilirubin (TSB) levels were estimated using the VITROS BuBc Slide method at 72 hours of life. Data were analyzed using SPSS version 23 (IBM Corp., Armonk, NY). RESULTS: A total of 200 term neonates were enrolled in the study, out of which 123 completed follow-ups. Of the 66 newborns who had cord bilirubin levels ≥1.75 mg/dl, 23 (34.8%) developed hyperbilirubinemia after 72 hours of life, whereas 10 of the 57 newborns (17.5%) whose cord bilirubin levels <1.75 mg/dl developed hyperbilirubinemia after 72 hours of life. Cord blood albumin of ≥3.75 g/dl was seen in 93 neonates, of which 18 (19.4%) developed hyperbilirubinemia after 72 hours of life and 15 (50%) with <3.75 g/dl developed hyperbilirubinemia after 72 hours of life. Cord reticulocyte count ≥4.95% was seen in 54 neonates; 20 (37.03%) developed hyperbilirubinemia, whereas in 69 neonates with <4.95%, 13 (18.84%) developed hyperbilirubinemia after 72 hours of life. Of the 62 neonates who had cord nRBC ≥3.5%, 28 (45.2%) neonates developed hyperbilirubinemia after 72 hours of life, whereas 5 of the 61 neonates (8.19%) with cord nRBC <3.5% developed hyperbilirubinemia after 72 hours of life. CONCLUSIONS: Cord blood bilirubin, albumin, reticulocyte counts, and nucleated RBC can be used as predictors of subsequent neonatal hyperbilirubinemia.
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