Elsevier

Clinical Biochemistry

Volume 45, Issue 9, June 2012, Pages 659-662
Clinical Biochemistry

Transcutaneous bilirubin measurement: Comparison of Respironics BiliCheck and JM-103 in a normal newborn population

https://doi.org/10.1016/j.clinbiochem.2012.03.014Get rights and content

Abstract

Objectives

To compare the accuracy of BiliCheck™ (Respironics, Marietta, GA) and Konica-Minolta Air Shield JM-103 (Drager Medical Inc, Telford, PA) to evaluate total serum bilirubin (TSB).

Methods

Prospective blinded study comparing two diagnostic devices in 630 neonates requiring TSB measurement.

Results

Linear regression analysis showed a good correlation between BiliCheck™ and TSB (r = 0.8212) as well as between JM-103 and TSB (r = 0.8686). BiliCheck shows a tendency to underestimate TSB. The mean difference in TSB–TcB was − 1.4 mg/dL for BC (− 4.7/+ 1.8 mg/dL) and 0.3 mg/dL for JM-103 (− 2.6/+ 3.2 mg/dL). ROC analysis for TSB  12 mg/dL showed area under the curve for BiliCheck™ significantly lower than those for JM-103 (p < 0.0001). JM-103 resulted less time expensive than BiliCheck.

Conclusions

In spite of similar diagnostic accuracy JM-103 could be preferred for some practical advantages, but its suitability in performing universal screening for severe hyperbilirubinemia deserves further investigations.

Highlights

► Our study includes 224 knee OA patients. ► We compare the differences in serum levels of MIF between knee OA patients and healthy controls. ► We determine the association of serum and SF levels of MIF with the radiographic severity of OA.

Introduction

Visual assessment of skin colour is routinely employed in all nurseries and by all neonatologists or neonatal nurses to evaluate or predict serum bilirubin level, but its accuracy is very poor [1].

The attempt to “measuring bilirubin through the skin” [2] has undergone a significant evolution and devices called transcutaneous bilirubinometers have been released overtime thanks to technological improvements. The BiliCheck™ (BC; Respironics, Marietta, GA, USA) and the Konica-Minolta Air Shield JM-103 (Drager Medical Inc, Telford, Pennsylvania) are the two devices actually in common use to predict serum bilirubin levels measuring the yellowness of the skin. Both devices analyse the light reflected by the skin with some difference in the wavelengths used, in the light generation and in the analysis of light reflected. Literature data seem to suggest the equivalence of these devices in predicting/evaluating serum bilirubin values, but their comparison on large study populations is lacking [3], [4].

The aim of this study is to compare BC and JM-103 accuracy in predicting TSB in clinical practice in a large population of healthy full-term and late preterm neonates.

Section snippets

Technical data

BiliCheck® (BC; Respironics Inc, Marietta, GA) is a device that analyses the light reflected from the newborn's skin with a multi-wavelength spectral reflectance technique (137 wavelengths in the range 380–785 nm, with resolution of 12 nm); determining optical densities respectively attributed to bilirubin and other skin pigments. BC provides a rapid and accurate measure of TSB, without the problems of older devices. BC needs a disposable clean tip (called BiliCal®) for every measurement and

Results

All parents gave informed consent and 630 babies were enrolled in the study. Table 1 shows the clinical population characteristics. The mean CV for BC and JM-103 was 7.1% ± 1.1% and 6.5% ± 1%, respectively. The relationship between transcutaneous and serum measurements for each device is reported in Table 2. We defined transcutaneous underestimation or overestimation for differences in TcB–TSB  0.5 mg/dL. BC overestimates TSB values in the 77.5% of measurements compared to 28.4% of JM-103 (p < 0.0001).

Discussion

Jaundice is a common clinical condition in neonates, and in the last years socio-economical issues and the short-hospital stay policies further pushed the clinicians to improve its management. Several systems have been developed, in order to predict hyperbilirubinemia, to avoid unnecessary blood samplings, and to save money without any risk for the babies. Transcutaneous bilirubinometers have faced these challenges, and BC nowadays should be considered the best available device for this aim [5]

References (14)

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