The nurse is teaching a new mother about the drastic growth and developmental changes her infant will experience in the first year of life. Which statement describes a developmentalmilestone occurring in infancy?

A. “This is a vasomotor response caused by cooling or warming": While vasomotor responses can cause changes in skin color due to temperature changes, acrocyanosis specifically refers to blue discoloration of the hands and feet due to reduced peripheral circulation, not necessarily due to temperature changes.

B. “This is normal her circulatory system will take a few days to adjust”: While it's true that newborns may have transient circulatory changes as their circulatory system adapts after birth, acrocyanosis specifically refers to a benign condition characterized by persistent blue discoloration of the extremities unrelated to circulatory adjustments.

C. "Let's watch her carefully to make sure she does not have a circulatory problem": While it's important to monitor infants for any signs of circulatory problems, acrocyanosis is typically a

benign and self-limiting condition that does not require intervention unless accompanied by other concerning symptoms.

D. "Your daughter has acrocyanosis; this is causing her blue hands and feet.”: This response provides an accurate explanation for the blue discoloration of the infant's hands and feet. Acrocyanosis is a common and benign condition in newborns characterized by blue discoloration of the extremities due to peripheral vasoconstriction, which gradually resolves over the first few days to weeks of life.

A. 87 lb is a reasonable weight for a 10-year-old boy who was 80 lb the previous year, considering the average weight gain is about 10 pounds a year at this age.

B. 81 lb would be a below-average weight gain for a year for a child of this age. C. 89 lb would be an above-average weight gain for a year for a child of this age.

D. 85 lb is within the range but slightly below the average expected weight gain for a year for a child of this age.