A Novel Icterometer for Hyperbilirubinemia Screening in Low-Resource Settings.

Area of Science:

• Neonatal Medicine
• Medical Devices
• Diagnostic Tools

Background:

• Severe neonatal hyperbilirubinemia affects approximately 1 million infants annually.
• There is a critical need for improved jaundice screening in low-income countries to prevent bilirubin encephalopathy and mortality.

Purpose of the Study:

• To validate the diagnostic accuracy of the Bili-ruler, a novel digital icterometer, for neonatal jaundice screening.
• To assess the Bili-ruler's performance against established transcutaneous bilirubin (TcB) and total serum bilirubin (TSB) measurements.

Main Methods:

• A validation study involving 790 newborns was conducted at two international hospitals.
• Bili-ruler measurements were taken independently and compared with reference standard TcB and TSB levels.
• Advanced digital color processing was utilized in the design of the Bili-ruler.

Main Results:

• Bili-ruler scores showed strong correlations with both TcB (r=0.76) and TSB (r=0.78) levels.
• The device demonstrated high sensitivity and specificity in identifying clinical thresholds for hyperbilirubinemia.
• Areas under the receiver operating characteristic curve (AUC) were high, indicating excellent diagnostic capability (e.g., AUC=0.93 for TcB ≥13 mg/dL).
• High interrater reliability (97% agreement within 1 score) was observed.

Conclusions:

• The Bili-ruler is a low-cost, noninvasive tool with high diagnostic accuracy for neonatal jaundice screening.
• This device has the potential to enhance patient referrals from peripheral health centers to facilities equipped for bilirubin testing and phototherapy.
• Implementation of the Bili-ruler can contribute to reducing the burden of severe neonatal hyperbilirubinemia globally.