## **Core Concept**
The management of neonatal jaundice, particularly in premature infants, involves assessing the risk of kernicterus based on gestational age, weight, and serum bilirubin levels. Premature infants are at higher risk due to their immature liver function and blood-brain barrier.

## **Why the Correct Answer is Right**
For a 32-week premature infant weighing 900gm with a serum bilirubin of 13 mg% on the third day, the treatment of choice leans towards phototherapy. Phototherapy is effective in reducing bilirubin levels by converting unconjugated bilirubin into water-soluble compounds that can be excreted by the liver and kidneys. The American Academy of Pediatrics (AAP) guidelines provide percentile-based treatment thresholds, and for a preterm infant of this gestational age and bilirubin level, phototherapy is often recommended.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is blank and cannot be evaluated.
- **Option B:** This option is blank and cannot be evaluated.
- **Option C:** This option is blank and cannot be evaluated.
- **Option D:** This option is blank and cannot be evaluated.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the risk of kernicterus in preterm infants is higher at lower bilirubin levels compared to term infants. Therefore, guidelines often suggest starting treatment at lower bilirubin thresholds in preterm infants. Additionally, it's crucial to monitor these infants closely for signs of kernicterus and to be prepared to start treatment promptly if bilirubin levels rise.

## **Correct Answer:** .