Clinical implication of the difference between transcutaneous bilirubinometry and total serum bilirubin for the classification of newborns at risk of hyperbilirubinemia

2009 ◽  
Vol 42 (3) ◽  
pp. 176-179 ◽  
Author(s):  
Karina Rodríguez-Capote ◽  
Keith Kim ◽  
Bosco Paes ◽  
Debbie Turner ◽  
Vijaylaxmi Grey
Keyword(s):  
At Risk ◽  
Clinical Implication ◽  
Serum Bilirubin ◽  
Total Serum Bilirubin ◽  
Total Serum ◽  
The Difference ◽  
Transcutaneous Bilirubinometry

scholarly journals Transcutaneous billirubinometry to estimate total serum bilirubin in neonatal jaundice

2017 ◽  
Vol 57 (1) ◽  
pp. 8 ◽  
Author(s):  
Andra Kurnianto ◽  
Herman Bermawi ◽  
Afifa Darmawanti ◽  
Erial Bahar
Keyword(s):  
Neonatal Jaundice ◽  
Serum Bilirubin ◽  
Subcutaneous Tissue ◽  
Correlation Coefficients ◽  
Total Serum Bilirubin ◽  
Blood Sampling ◽  
Total Serum ◽  
Transcutaneous Bilirubin ◽  
Non Invasive ◽  
Transcutaneous Bilirubinometry

Background The gold standard for diagnosis of neonatal jaundice is total serum bilirubin (TSB) measurement. This method, however, is invasive, painful, and costly in terms of workload, time, and money. Moreover, repeated blood sampling may lead to significant blood loss, which is of particular concern in preterm infants. To overcome these drawbacks, non-invasive methods of bilirubin measurement have been proposed. Transcutaneous bilirubinometry (TcB) determines the yellowness of the subcutaneous tissue of a newborn infant by measuring the difference between optical densities for light in the blue and green wavelength regions.Objective To evaluate the accuracy of transcutaneous bilirubinometry for estimating TSB levels in neonatal jaundice.Methods Subjects were infants aged < 28 days with jaundice who had never been treated with phototherapy or exchange transfusion. The study was done from February to July 2016 in Mohammad Hoesin Hospital. Subjects underwent transcutaneous bilirubin (TcB) and TSB assays, with a maximum interval of 15 minutes between tests.Results One hundred fifty patients were included in this study. The TcB values > 5 mg/dL were correlated to TSB > 5 mg/dL, with 100% sensitivity and 83.3% specificity. This cut-off point was obtained from a receiver-operator characteristic (ROC) curve with AUC 99.3% (95%CI 97.9 to 100%; P< 0.001).The correlation coefficients (r) for TSB and TcB measurements on the forehead were 0.897 (P<0.001).Conclusion Transcutaneous bilirubinometry can be used to accurately estimate TSB levels in neonatal jaundice, and may be useful in clinical practice as a non-invasive method to reduce blood sampling.

scholarly journals Transcutaneous Billirubinometry: A Useful Screening Tool for Neonatal Jaundice in Term and Near Term Babies - A Hospital Based Study

2017 ◽  
Vol 39 (3) ◽  
pp. 116-122 ◽  
Author(s):  
Nargis Ara Begum ◽  
Khorshed Alam ◽  
Anamika Shaha ◽  
Md Sohel Showmik ◽  
Runa Laila ◽  
...  
Keyword(s):  
Screening Tool ◽  
Serum Bilirubin ◽  
Screening Method ◽  
Total Serum Bilirubin ◽  
Total Serum ◽  
P Value ◽  
Cross Sectional ◽  
Transcutaneous Bilirubin ◽  
Severe Hyperbilirubinemia ◽  
Transcutaneous Bilirubinometry

Background: Hyperbilirubinemia is a common problem in newborn. Most of the cases are benign but severe hyperbilirubinemia can lead to kernicterus and brain damage which is preventable. The gold standard to asses neonatal hyperbilirubinaemia is serum bilirubin measurement. Unfortunately, this procedure is invasive, painful and time consuming. As the consequence of missing severe hyperbilirubinemia is serious, there is a constant search to find out a safe method to detect jaundice. Transcutaneous bilirubinometry offers objective method of assessing degree of jaundice reducing subjectivity of clinical assessment.Objective: To evaluate the relationship between transcutaneous bilirubin (TcB) and total serum bilirubin (TSB) and assess whether transcutaneous bilirubinometry can be used as a valid screening method for detecting jaundice in term and late preterm babies.Method: A prospective cross-sectional study was performed in well baby nursery of United Hospital Limited, Dhaka from January 2013 to December 2013. Healthy term and late pre term newborn of ?35 wk gestation with clinical evidence of jaundice were included in the study. Total serum bilirubin was measured by Dichlorophenyl Diazonin method and transcutaneous bilirubinometer (JM-103) was used to measure transcutaneous bilirubin (TcB) level.Result: A total of 116 paired samples were analyzed and found strong correlation between TcB and TSB (correlation coefficient 0.8, mean difference 0.83, SD± 1.96 and 95% CI 0.6 to 1.06). Post natal age has significant association with TcB (p value 0.01) and TSB (p value 0.031). Requirement of phototherapy in both group were also significant (p value <0.001). TcB value of 11 mg/dl was chosen as cut off point corresponding TSB level 13 mg/dl with sensitivity 90% and specificity 71%. Above this level indicate need for blood sampling to take appropriate therapeutic measure.Conclusion: Transcutaneous billirubinometry is a non-invasive and valid screening tool for assessing jaundice in newborn.Bangladesh J Child Health 2015; VOL 39 (3) :116-122

scholarly journals Evaluation of Jaundice meter in the assessment of jaundice among Nigerian preterm neonates

1970 ◽  
Vol 42 (3) ◽  
pp. 194-198
Author(s):  
BO Kayode-Adedeji ◽  
JA Owa ◽  
GO Akpede ◽  
SO Alikah
Keyword(s):  
Birth Weight ◽  
Gestational Age ◽  
Serum Bilirubin ◽  
Objective Assessment ◽  
Total Serum Bilirubin ◽  
Preterm Neonates ◽  
Total Serum ◽  
Transcutaneous Bilirubin ◽  
The Mean ◽  
Transcutaneous Bilirubinometry

Background: The objective assessment of the severity of neonatal jaundice is Total Serum Bilirubin (TSB) determination, which requires multiple blood sampling. This has inherent problems, including risks of anaemia and infection. Transcutaneous Bilirubinometry (TcB) is a reliable, non-invasive alternative, however there is paucity of data on its performance in black preterm neonates.Objectives: To evaluate the correlation between transcutaneous bilirubin (TcB) and total serum bilirubin (TSB) among Nigerian preterm neonates, and to determine the parameters affecting the relationship.Method: Jaundiced preterm neonates delivered between 28 and 36 weeks of gestation admitted at the Irrua Specialist Teaching Hospital (ISTH), Nigeria were recruited . The TSB levels were determined by spectrophotometry while the corresponding TcB levels were obtained using Jaundice Meter (JM-103). The neonates were stratified into gestational age and birth weight groups.Results: A total of 189 paired TcB and TSB levels were obtained from 60 neonates. The Mean (sd) TcB level of 11.4 (3.1) mg/dl was significantly higher than the mean TSB level of 10.2 (2.8)mg/dl (p= 0.028). The overall correlation coefficient between TcB and TSB was 0.98 and it was not significantly affected by the gestational age, birth weight and bilirubin levels.Conc lusion: Transcutneous bilirubin strongly correlates with total serum bilirubin levels among Nigerian preterm neonates, irrespective of gestational age, birth weight and the degree of jaundice.Keywords: hyperbiliruinaemia, jaundice meter, Nigerian, preterm, neonates, transcutaneous bilirubinometry

scholarly journals Efficacy of Transcutaneous Bilirubinometry as Compared to Serum Bilirubin in Preterm Newborn During Phototherapy

2021 ◽  
Author(s):  
Sunil Gothwal ◽  
Neelam Singh ◽  
Sadasivam Sitaraman ◽  
Ramesh Choudhary ◽  
Kailash Kumar Meena ◽  
...  
Keyword(s):  
Neonatal Intensive Care ◽  
Serum Bilirubin ◽  
Tertiary Care ◽  
Total Serum Bilirubin ◽  
Preterm Neonates ◽  
Total Serum ◽  
Skin Area ◽  
Care Hospital ◽  
Transcutaneous Bilirubin ◽  
The Difference

Abstract Transcutaneous measurement of bilirubin is being used for neonatal jaundice. Its utility during phototherapy in preterm babies is not established. Objective of our study was to assess the efficacy of transcutaneous bilirubin (TcB) measurement in comparison to total serum bilirubin in preterm newborns at admission and during phototherapy at covered skin area (glabella). It was a prospective observational study and conducted at neonatal intensive care unit of a tertiary care hospital from January 2017 to January 2019. One hundred eligible preterm neonates were enrolled. Babies who were very sick, with poor peripheral circulation, edematous, having conjugated hyperbilirubinemia, with major congenital malformations, already received phototherapy or exchange transfusion were excluded. Paired total serum bilirubin and transcutaneous bilirubin were measured at admission, at 6 hours and 24 hours during phototherapy. TcB was measured from area (glabella) covered by eye protector during phototherapy. Sample for TsB was taken within 10 minutes of TcB measurement. The mean difference between TsB and TcB values at admission, 6 hours and 24 hours of phototherapy were -0.005 (0.353), --0.350 (0.611), and -0.592 (0.353) respectively. At admission or before starting of phototherapy the difference (TsB-TcB) was statistically not significant (p=.125), while the difference in these values were statistically significant at 6 hours and 24 hours of phototherapy. Conclusion: TcB measurements from covered skin area in jaundiced preterm infants during phototherapy were not correlated with TsB and cannot be used as an alternate of serum bilirubin levels.

scholarly journals Transcutaneous bilirubinometry versus total serum bilirubin measurement for newborns

2017 ◽  
Author(s):  
Charles I Okwundu ◽  
Olalekan A Uthman ◽  
Gautham Suresh ◽  
Johan Smith ◽  
Charles S Wiysonge ◽  
...  
Keyword(s):  
Serum Bilirubin ◽  
Total Serum Bilirubin ◽  
Total Serum ◽  
Transcutaneous Bilirubinometry

Two Different UGT1A1 Mutations causing Crigler–Najjar Syndrome types I and II in an Iranian Family

2015 ◽  
Vol 24 (4) ◽  
pp. 523-526 ◽  
Author(s):  
Yoshihiro Maruo ◽  
Mahdiyeh Behnam ◽  
Shinichi Ikushiro ◽  
Sayuri Nakahara ◽  
Narges Nouri ◽  
...  
Keyword(s):  
Serum Bilirubin ◽  
Total Serum Bilirubin ◽  
Total Serum ◽  
Compound Heterozygous ◽  
Type I ◽  
Syndrome Type ◽  
Type Ii ◽  
Wild Type ◽  
Iranian Family ◽  
Udp Glucuronosyltransferase

Background: Crigler–Najjar syndrome type I (CN-1) and type II (CN-2) are rare hereditary unconjugated hyperbilirubinemia disorders. However, there have been no reports regarding the co-existence of CN-1 and CN-2 in one family. We experienced a case of an Iranian family that included members with either CN-1 or CN-2. Genetic analysis revealed a mutation in the bilirubin UDP-glucuronosyltransferase (UGT1A1) gene that resulted in residual enzymatic activity.Case report: The female proband developed severe hyperbilirubinemia [total serum bilirubin concentration (TB) = 34.8 mg/dL] with bilirubin encephalopathy (kernicterus) and died after liver transplantation. Her family history included a cousin with kernicterus (TB = 30.0 mg/dL) diagnosed as CN-1. Her great grandfather (TB unknown) and uncle (TB = 23.0 mg/dL) developed jaundice, but without any treatment, they remained healthy as CN-2. Results: The affected cousin was homozygous for a novel frameshift mutation (c.381insGG, p.C127WfsX23). The affected uncle was compound heterozygous for p.C127WfsX23 and p.V225G linked with A(TA)7TAA. p.V225G-UGT1A1 reduced glucuronidation activity to 60% of wild-type. Thus, linkage of A(TA)7TAA and p.V225G might reduce UGT1A1 activity to 18%–36 % of the wild-type. Conclusion: Genetic and in vitro expression analyses are useful for accurate genetic counseling for a family with a history of both CN-1 and CN-2. Abbreviations: CN-1: Crigler–Najjar syndrome type I; CN-2: Crigler–Najjar syndrome type II; GS: Gilbert syndrome; UGT1A1: bilirubin UDP-glucuronosyltransferase; WT: Wild type; TB: total serum bilirubin.

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