Determining the Correlation and Accuracy of Three Methods of Measuring Neonatal Bilirubin Concentration

AUTHORS

Mirhadi Mussavi 1 , Pedram Niknafs 2 , * , Bahareh Bijari 3

How to Cite: Mussavi M, Niknafs P, Bijari B. Determining the Correlation and Accuracy of Three Methods of Measuring Neonatal Bilirubin Concentration, Iran J Pediatr. 2013 ; 23(3):333-339.

ARTICLE INFORMATION

Iranian Journal of Pediatrics: 23 (3); 333-339
Published Online: May 07, 2013
Article Type: Research Article
Received: June 13, 2012
Accepted: March 16, 2013

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Abstract

Objective: There are different methods for measuring bilirubin concentration; however, it is quite important for practitioners to know which method should be used in certain clinical situations. The present prospective study aimed to compare three different methods for measuring neonatal bilirubin concentrations.
Methods: All full term neonates who were either brought into emergency departments or admitted to the neonatal wards in Kerman city in 2011 were recruited (n=428). The correlation coefficients were estimated for the routine ways of bilirubin concentrations including "Capillary", "Cutaneous" and "Laboratory" methods.
Findings: Of 428 recruited neonates, 178 were female. Mean age ±SD was 178±71 hours. The correlation coefficient for "David Icterometer" vs "JM103" was 0.91, while the corresponding coefficient for "David Icterometer" vs "Capillary" was 0.96. It was also equivalent to 0.85 for correlation between "JM103" and "Capillary" methods. The David Icterometer measured an average of 2.36 mg/dl levels of bilirubin concentration compared to the JM103 method. The Capillary method showed a lower bilirubin level than the venous concentration (0.91 mg/dl on average). Compared with the "Capillary", the "JM103" measured a slightly higher level of bilirubin with an average 0.57 mg/dl.
Conclusion: Due to low difference (less than 1 mg/dl) between "JM103" and the "Capillary methods" for measurement of neonatal bilirubin concentration, these two methods could alternatively be used instead of usual laboratory method.

 

Keywords

Capillary Bilirubinometer Neonate Bilirubin David Icterometer

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