A nurse is reviewing the laboratory report of an adolescent client who has menorrhagia. Which of the following laboratory results should the nurse report to the provider?

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.

Choice C reason: The infant makes babbling sounds. At 6 months of age, it is typical for infants to engage in babbling sounds. Babbling is a significant milestone in language development during infancy. It involves the repetition of consonant-vowel combinations (e.g., "ba-ba,”. "ma-ma") and is an essential precursor to later language skills, such as forming words and sentences. The nurse should expect the 6-month-old infant to be making these babbling sounds as part of their normal development.

Choice A reason:

The infant has a pincer grasp. A pincer grasp is the ability to pick up small objects using the thumb and index finger. This fine motor skill typically develops around 9 to 12 months of age. At 6 months old, infants have not yet acquired the pincer grasp. Therefore, the nurse should not expect the 6-month-old infant to demonstrate this skill during the assessment.

Choice D reason:

The infant crawls on their hands and knees. Crawling is a gross motor skill that usually emerges between 7 to 10 months of age. While some infants may start crawling earlier or later, it is not a skill that is typically present in a 6-month-old. Therefore, the nurse should not anticipate the 6-month-old infant to be crawling on their hands and knees during the assessment.

Choice B reason:

The infant drops objects with the expectation of someone picking them up. This behavior, known as "object permanence,”. is a cognitive milestone that develops around 8 to 12 months of age. At 6 months old, infants have not yet fully developed this concept. They might drop objects as part of their exploratory behavior, but they do not yet understand the expectation of someone picking them up. Therefore, the nurse should not expect the 6- month-old infant to exhibit this specific behavior during the assessment.