Role of Cord Blood Carboxyhemoglobin in Detecting Significant Hyperbilirubinemia in Term Neonates with ABO Alloimmunization.

Abstract:

OBJECTIVE: This study aimed to assess whether cord blood carboxyhemoglobin (COHb) levels in jaundiced term neonates with and without a positive direct Coombs test (DCT) and in healthy controls could be used as a predictor of severe hyperbilirubinemia. The percentage of cord blood COHb should be higher among neonates with Coombs-positive ABO hemolytic disease than among those with Coombs-negative ABO incompatibility and higher than that of ABO-compatible control neonates. STUDY DESIGN: This cross-sectional descriptive study of 198 term neonates comprised three subgroups: group I featured 68 DCT-positive ABO-incompatible neonates (ABO + DCT), group II featured 60 DCT-negative ABO-incompatible neonates with hyperbilirubinemia (ABO-DCT), and group III featured 70 healthy controls. COHb was determined by an OSM3 hemoximeter. RESULTS: Group I differed from groups II and III for cord blood bilirubin, cord blood hemoglobin, and cord blood hematocrit. Groups I and II had higher mean total serum bilirubin (TSB) levels than group III, while there was no difference in the mean TSB levels between groups I and II. There was no significant difference between the COHb group means for groups I, II, and III (p = 0.98). The area under the receiver operating characteristic curve calculated for group I/group III and group II/group III were found to be 0.62 and 0.54, respectively. CONCLUSION: COHb levels did not prove to be superior to the DCT for predicting the risk of developing severe hyperbilirubinemia in term neonates. KEY POINTS:· COHb levels do not predict the risk of developing severe hyperbilirubinemia in term neonates.. · COHb levels may predict that ABO incompatibility in early life.. · COHb levels did not prove to be superior to the direct coombs test..

journal_name

Am J Perinatol

authors

Tıraş M,Can E,Hamilçıkan Ş

doi

10.1055/s-0040-1722328

subject

Has Abstract

pub_date

2021-01-04 00:00:00

eissn

0735-1631

issn

1098-8785

pub_type

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