Aithal, Nimisha, Kandasamy, Yogavijayan, and Rudd, Donna (2023) Association between umbilical cord clamping time, hemoglobin and total serum bilirubin in term neonates admitted for phototherapy. Journal of Neonatal Nursing, 29 (1). pp. 183-187.

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Abstract

Background: The aim of the study was to investigate relationship between cord clamping status, total hemoglobin (THb) and total bilirubin (TBil) in term infants requiring phototherapy for neonatal jaundice.

Methods: This retrospective study included term infants admitted at the study hospital for management of physiological neonatal jaundice between 2013 and 2019. Associations between THb, TBil, cord clamping status and Direct Coombs Test (DCT) status, as well as correlation between laboratory and blood gas analyzer (BGA) methods were investigated.

Results: 258 term infants were included. 147 infants had cord clamping status documented; 111 had unknown cord clamping status. Delayed cord clamping (DCC) was associated with significantly higher mean THb in DCT negative infants only. Negative DCT was associated with higher THb and TBil regardless of cord clamping status. Mean TBil concentration did not change with increasing THb or cord clamping status. The incidence of term infants admitted for phototherapy increased over the study period. There was strong positive correlation between BGA and laboratory assays.

Conclusions: DCC was associated with a higher THb in DCT negative infants only. There was no correlation between THb and TBil. There was strong positive correlation of TBil between BGA and laboratory assays thus supporting BGA use in ambulatory care settings.

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