a blastocyst gains mass only when it receives nourishment from outside
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Nursing Elites

HESI LPN

HESI Focus on Maternity Exam

1. Does a blastocyst gain mass only when it receives nourishment from outside?

Correct answer: A

Rationale: A blastocyst does indeed require external nourishment from the mother's body to continue developing and gaining mass. Without this external nourishment, the blastocyst would not be able to grow and develop properly. Therefore, the statement that a blastocyst gains mass only when it receives nourishment from outside is true. Choices B, C, and D are incorrect because they do not accurately reflect the dependency of a blastocyst on external nourishment for its development and growth.

2. Twenty-year-old Jack is extremely tall and has very thick facial hair. Most of his male secondary sex characteristics are also more pronounced than men of his age. In this scenario, Jack is most likely:

Correct answer: A

Rationale: The correct answer is A: an XYY male. Individuals with XYY syndrome often exhibit increased height and more pronounced secondary male characteristics, such as thick facial hair. Choice B, Klinefelter syndrome (XXY), typically presents with less prominent male secondary sex characteristics due to the presence of an extra X chromosome. Choice C, XXY male, refers to Klinefelter syndrome, which does not align with the description of Jack having more pronounced male secondary sex characteristics. Choice D, Down syndrome, is caused by a trisomy of chromosome 21 and is not associated with the physical characteristics described in the scenario.

3. Which of the following statements is true of Down’s syndrome?

Correct answer: D

Rationale: The correct answer is D. The likelihood of having a child with Down’s syndrome increases as the age of the parents increases, particularly the mother's age. Choice A is incorrect because Down’s syndrome is caused by an extra copy of chromosome 21, not a defect in the sex chromosomes. Choice B is incorrect as the symptoms of Down’s syndrome and sickle-cell anemia are different. Choice C is also incorrect as Down’s syndrome is not caused by a sexually transmitted infection during conception.

4. When should a nurse on a labor and delivery unit instruct a newly licensed nurse to don gloves for a procedure?

Correct answer: B

Rationale: The correct answer is B: Performing a newborn's initial bath. Gloves should be worn during this procedure to protect against exposure to body fluids, such as amniotic fluid or blood. Assisting a mother with breastfeeding (Choice A) does not typically require gloves unless there are specific reasons for infection control. Administering vaccines (Choice C) and performing umbilical cord care (Choice D) are procedures that may require hand hygiene but not necessarily gloves, unless there is active bleeding or potential exposure to body fluids. The initial bath involves direct contact with body fluids, making it crucial to wear gloves for protection.

5. The nurse is receiving a report for a laboring client who arrived in the emergency center with ruptured membranes that the client did not recognize. Which is the priority nursing action to implement when the client is admitted to the labor and delivery suite?

Correct answer: C

Rationale: The priority nursing action when a client with ruptured membranes is admitted to the labor and delivery suite is to take the client's temperature. This is crucial to assess for infection, especially when the duration of membrane rupture is unknown. Beginning a pad count, preparing to start an IV, and monitoring amniotic fluid for meconium are important actions but are not as immediate or critical as assessing for infection through temperature measurement.

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