New transcutaneous jaundice device with two optical paths

Saneyuki Yasuda, Susumu Itoh, Kenichi Isobe, Masahiko Yonetani, Hajime Nakamura, Makoto Nakamura, Yoshitada Yamauchi, Akio Yamanishi
Journal of Perinatal Medicine 2003, 31 (1): 81-8

OBJECTIVES: To confirm the accuracy and precision of transcutaneous bilirubin (TcB) values measured by a new device with two optical paths (JM-103) and the value of total serum bilirubin (TSB) level in clinical units of measurement.

METHODS: For comparison of the levels of accuracy and precision of JM-103 and the old device (JM-102), serum samples were collected from 77 Japanese infants in three different hospitals including 24 preterm infants and 53 term infants. Measurement of TcB by JM-103 and JM-102 were performed on the forehead of each infant within 30 min before or after blood sampling.

RESULTS: The range of TSB was limited to 19.6 mg/dL and to 17 mg/dL for preterm infants. The correlation coefficients for all subjects (r = 0.94) and for term and preterm subjects between TcB measured by JM-103 and TSB was higher than that between TcB measured by JM-102 and TSB. The regression line in term infants between TcB measured by JM-103 and TcB was similar to that in preterm infants. The error distribution of TcB measured by JM-102 and TSB for all subjects (0.00 +/- 2.21) and for term and preterm subjects was larger than that of TcB measured by JM-103 and TSB (all subjects, 0.30 +/- 1.55).

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