Am J Perinatol 2023; 40(07): 788-792
DOI: 10.1055/s-0041-1731277
Original Article

Transcutaneous Bilirubin Monitoring in Preterm Infants of 23 to 34 Weeks' Gestation

Jennifer Weber
1   Division of Neonatology, Phoenix Children's Hospital, Phoenix, Arizona
2   Department of Child Health, University of Arizona College of Medicine, Phoenix, Arizona
,
Nataly Vadasz-Chates
3   Department of Pediatrics, Agave Pediatrics, Glendale, Arizona
,
Christine Wade
4   Research Nurse, Mednax Inc. /Phoenix Perinatal Associates, Phoenix, Arizona
,
Becky Micetic
4   Research Nurse, Mednax Inc. /Phoenix Perinatal Associates, Phoenix, Arizona
,
Richard Gerkin
5   GME Research, Banner—University Medical Center Phoenix, Phoenix, Arizona
6   Department of Internal Medicine, University of Arizona College of Medicine Phoenix, Phoenix, Arizona
,
Suma Rao
7   Department of Pediatrics, Banner—University Medical Center Phoenix, Phoenix, Arizona
8   University of Arizona College of Medicine, Phoenix, Arizona
9   Division of Neonatal Medicine, Mednax Inc., Phoenix Perinatal Associates, Phoenix, Arizona
› Author Affiliations

Funding None.
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Abstract

Objective The study aimed to evaluate the validity of transcutaneous bilirubin (TcB) measurements at three sites in premature infants born at 230/7 to 346/7 weeks' gestational age (GA) compared with total serum bilirubin (TSB) measurements.

Study Design A prospective study was conducted at Banner – University Medical Center Phoenix, where informed consent was obtained from the infant's parent or legally authorized representative. Cohort A was comprised of infants 230/7 to 286/7 weeks' GA and Cohort B contained subjects 290/7 to 346/7 weeks' GA. Baseline TSB measurements were collected at approximately 24 hours of life, as the standard of care and the TcB measurements were obtained from the sternum, interscapular, and buttock areas at approximately ± 30 minutes from collection of the TSB. Statistical analysis of measurements including sensitivity, specificity, positive, and negative predictive values, and the area under the receiver operator characteristic curve (AUROC) were performed.

Results A total of 166 infants were included in the study population. Cohort A consisted of 41 subjects and Cohort B contained 125 subjects. The results showed that baseline TcB measurements from the interscapular area were the most sensitive and specific with TSB levels >5.0 mg/dL in Cohort A. Baseline TcB measurements from the sternum demonstrated greatest sensitivity and specificity when the TSB level was >8.0 mg/dL in Cohort B. In general, each of the three sites in both cohorts demonstrated excellent AUROCs and negative predictive values.

Conclusion The use of a TcB meter in preterm infants can be a reliable noninvasive screening tool for hyperbilirubinemia, and it may be beneficial in decreasing painful stimuli and iatrogenic blood loss when used as an adjunct to TSB monitoring.

Key Points

  • Interscapular TcB is sensitive/specific in 23 to 29 weeks' GA.

  • Sternal TcB is sensitive/specific in 29 to 35 weeks' GA.

  • TcB readings are reliable in preterm infants.

  • TcB is reliable when serum bilirubin is >5.0 mg/dL.



Publication History

Received: 05 April 2021

Accepted: 10 May 2021

Article published online:
14 June 2021

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