Final answer:
To assist in the management of hyperbilirubinemia in a newborn, increasing the frequency of breastfeeding is recommended to aid in the excretion of bilirubin. Breast milk, especially colostrum, provides necessary immunoglobulins and hydration to the infant. Phototherapy is another treatment option for lowering bilirubin levels.
Step-by-step explanation:
To manage hyperbilirubinemia in a breastfed newborn, the nurse should advise the mother to increase the frequency of breastfeeding. This is because breast milk contains laxative properties that help newborns expel meconium, which in turn aids in the clearance of bilirubin through the stool. Bilirubin is a product of red blood cell breakdown and a high concentration in the blood causes jaundice. The liver of a newborn may not effectively process all bilirubin, leading to hyperbilirubinemia. More frequent breastfeeding leads to more elimination of bilirubin, hence reducing its levels in the blood.
It is vital to note that colostrum, the first breast milk, is packed with immunoglobulins that bolster the infant's immune defenses. Also, it should be understood that the newborn's kidneys are still immature and produce dilute urine, so adequate hydration from breastfeeding is crucial. Phototherapy may also be used as it uses UV light to break down bilirubin more quickly in the blood. Supplementation with formula or early introduction of solid foods is not typically advised for managing hyperbilirubinemia, as it may interfere with breastfeeding and is not as effective at promoting the passage of meconium.