Which of the following best describes the standard phototherapy approach for neonatal hyperbilirubinemia and when is exchange transfusion indicated?

• A. Phototherapy to convert bilirubin to water-soluble forms; exchange transfusion indicated for severe hyperbilirubinemia or phototherapy failure.
• B. Exchange transfusion is first-line.
• C. Discontinue feeding.
• D. Phototherapy is not effective.

Answer: (A)

Phototherapy uses blue light to convert unconjugated bilirubin into water-soluble photoisomers that can be excreted without needing the liver to conjugate it. This is the standard initial treatment for neonatal hyperbilirubinemia because it lowers bilirubin levels safely and effectively. Exchange transfusion is considered when bilirubin is extremely high or rising despite therapy, or when there are signs of bilirubin-induced neurologic dysfunction or ongoing severe hemolysis. It rapidly reduces bilirubin by replacing the infant’s blood and removing circulating bilirubin and antibodies. In practice, phototherapy is the first-line approach, and exchange transfusion is reserved for severe cases or phototherapy failure.