A nurse is reinforcing teaching with a parent of an infant who has diaper dermatitis and a new prescription for zinc oxide ointment. Which of the following statements by the parent indicates an understanding of the teaching?

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 A reason: The nurse should include the statement that "This test measures amniotic fluid volume” in the teaching about the biophysical profile (BPP). The rationale for this is that the BPP is a prenatal screening tool that assesses the well-being of the fetus. One of the components of the BPP is the measurement of amniotic fluid volume, which helps to evaluate fetal kidney function and overall fetal health.

Choice B reason:

The nurse should not include the statement about receiving Rh(D) immune globulin prior to the test because it is not directly related to the biophysical profile (BPP). Rh(D) immune globulin is given to Rh-negative pregnant women to prevent hemolytic disease of the newborn (HDN) if the fetus is Rh-positive. While this may be important information during pregnancy, it is not specific to the BPP.

Choice C reason:

The nurse should not include the statement that "This test is used to assess uterine activity” in the teaching about the BPP. The BPP is a test focused on evaluating fetal well-being and not uterine activity. Uterine activity is typically assessed through other methods, such as monitoring contractions during labor.

Choice D reason:

The correct answer is not Choice D. The nurse should not include the statement that "Your bladder needs to be full to perform this test” in the teaching about the BPP. This statement is incorrect because a full bladder is not necessary for the BPP. Instead, the BPP involves the use of ultrasound to assess fetal movements, breathing, muscle tone, and amniotic fluid volume, and a full bladder is not a requirement for this assessment.