A nurse is collecting data from an infant who has Hirschsprung's disease. Which of the following manifestations should the nurse expect?

Choice A reason:

If the parent states, "My child uses scissors to cut out the outline of an object,” this indicates fine motor skills development. While this is a positive milestone, it is not specific to the expected benchmarks of other preschoolers in this age group. The ability to cut out shapes with scissors varies widely among preschoolers.

Choice B reason:

"My child can copy triangle shapes onto paper.” This statement shows that the child can demonstrate some level of visual-motor coordination and fine motor skills. Copying shapes like triangles is a common milestone for many preschoolers at the age of 3 and is considered an expected benchmark.

Choice C reason:

If the parent says, "My child can ride a tricycle,” this indicates gross motor skills development. Riding a tricycle is also a milestone achieved by many preschoolers, but it may not be as specific to the expected benchmarks of this age group as choice B, which focuses on fine motor skills and visual-motor coordination.

Choice D reason:

If the parent mentions, "My child can throw a ball overhead,” this also points to gross motor skills development. While throwing a ball overhead is an impressive skill for a 3-year-old, it may not be as common or consistent among all preschoolers in this age group as the ability to copy triangle shapes onto paper (choice B).

Choice A reason: The correct answer is choice A. The nurse should expect the presence of the Moro reflex in a 6-month-old infant. The Moro reflex is a normal primitive reflex seen in infants up to about 6 months of age. When the infant experiences a sudden loss of support or a loud noise, they react by extending their arms and legs and then pulling them back in, as if trying to grasp onto something. This reflex is an important indicator of the baby's neurological development.

Choice B reason:

The birth weight doubling by 6 months of age is a typical growth milestone for infants. However, this statement is not correct in the context of the question, as it is not something the nurse should "expect” during a well-child visit. Instead, it is a general developmental milestone that healthcare providers monitor over time.

Choice C reason:

The correct answer is choice C. The nurse should expect the posterior fontanel to be closed in a 6-month-old infant. Fontanels are soft spots on a baby's skull that allow for brain growth during early development. The posterior fontanel, located at the back of the head, is typically closed by 6 months of age.

Choice D reason:

The correct answer is choice D. At 6 months of age, many infants can sit unsupported. However, not all infants achieve this milestone at the exact same age. Some may achieve it a bit earlier, while others might take a little more time. It is essential for the nurse to assess the infant's developmental progress and provide appropriate guidance to the parents.

Choice E:

The correct answer is choice E. By 6 months of age, some infants may be able to move from their back to their front. This is usually accomplished through rolling over. However, like other developmental milestones, the age at which infants achieve this can vary. Therefore, while the nurse may expect this ability in some infants, it is not something that all 6-month- old infants will have mastered at the time of the well-child visit.