A newborn is jaundiced and receiving phototherapy via ultraviolet bank lights. An appropriate nursing intervention when caring for an infant with hyperbilirubinemia and receiving phototherapy by this method would be to:

Choice A rationale The principle of effective phototherapy is to maximize the surface area of the skin exposed to the light source, which converts unconjugated bilirubin into water-soluble photoisomers for excretion. To achieve this, the newborn's position should be changed frequently, ideally every 2 to 3 hours rather than every 4 hours, to ensure all skin surfaces are optimally illuminated. Choice B rationale Phototherapy increases the newborn's risk for insensible water loss due to the heat and light. To compensate and aid in the excretion of the bilirubin photoisomers, it is essential to ensure adequate hydration and feeding with milk (either breast milk or formula), not to limit it, which would exacerbate dehydration and hinder bilirubin clearance. Choice C rationale The high-intensity ultraviolet (UV) light used in phototherapy can cause retinal damage to the delicate, developing newborn eyes. Therefore, it is a critical safety intervention to place opaque eye shields over the newborn's closed eyes, ensuring complete coverage, and to monitor their correct placement frequently to prevent potential phototoxicity. Choice D rationale Applying oil-based or petroleum-based lotions to the newborn's skin is strictly contraindicated during phototherapy. These substances can absorb the light energy, causing a "tanning" effect or potentially leading to thermal burns or rashes by focusing the light intensity onto the skin, thus impairing the therapeutic effect and risking injury.