The nurse is caring for a newborn born at 30 weeks' gestation.Which assessment finding should the nurse anticipate?
Explanation & Rationale
Choice A rationalePlantar creases appear over the entire sole closer to term gestation (37-40 weeks). At 30 weeks, these creases are confined to the anterior sole, reflecting the immature integumentary system. Absence of full creases correlates with preterm gestational age, assisting in clinical age assessment of neonates.Choice B rationalePreterm neonates at 30 weeks exhibit hypotonia, with minimal extremity flexion. Flexion develops progressively as the central nervous system matures. Hypotonia reflects developmental immaturity and is a distinguishing feature in preterm infants compared to term neonates.Choice C rationaleSubcutaneous fat deposition is limited in preterm neonates, contributing to their thin, translucent skin and increased risk of thermoregulation issues. Fat accumulation occurs primarily in the third trimester, and its absence is a hallmark of premature neonates, requiring external temperature support.Choice D rationaleLanugo, a fine hair covering the body, is prominent in neonates born at 30 weeks. It serves as an adaptive mechanism for thermoregulation in utero. Lanugo decreases closer to term as subcutaneous fat increases. Its presence confirms preterm status and aids in gestational age assessment.