The priority treatment for pathologic hyperbilirubinemia in a newborn?

• A. Phototherapy
• B. Exchange transfusion
• C. IVIG
• D. Antibiotics

Answer: (A)

Managing pathologic newborn jaundice aims to rapidly lower unconjugated bilirubin to prevent brain injury. Phototherapy serves as the first-line treatment because the blue-green light converts bilirubin into water-soluble photo-products (lumirubin and others) that are excreted in bile and urine without requiring the liver to conjugate it. This approach quickly reduces serum bilirubin levels with a noninvasive method, making it the best initial therapy.

Exchange transfusion is used only if phototherapy is insufficient, if bilirubin rises very high, or if there are signs of acute bilirubin encephalopathy, because it is more invasive and carries greater risk. IVIG is considered when immune-mediated hemolysis (such as incompatibility) contributes to the jaundice. Antibiotics are not a treatment for hyperbilirubinemia itself unless an accompanying infection is present.