HESI LPN
Maternity HESI Practice Questions
1. _____ are environmental agents that can harm the embryo or fetus.
- A. Mutations
- B. Autosomes
- C. Teratogens
- D. Androgens
Correct answer: C
Rationale: Teratogens are environmental agents, such as drugs, chemicals, or infections, that can cause harm to a developing embryo or fetus. Mutations (Choice A) refer to changes in the DNA sequence and are not environmental agents. Autosomes (Choice B) are chromosomes that are not involved in determining an individual's sex and are not environmental agents that harm the embryo or fetus. Androgens (Choice D) are a group of hormones that are more related to male sexual development and function, not environmental agents that harm the embryo or fetus.
2. A nurse is planning to teach a group of clients who are breastfeeding after returning to work. Which of the following instructions should the nurse include in the teaching?
- A. “Thawed breast milk can be refrigerated for up to 24 hours.”
- B. “Breast milk can be stored in a deep freezer for 12 months.”
- C. “Breast milk can be stored at room temperature for up to 4 hours.”
- D. “Thawed breast milk that is unused cannot be refrozen.”
Correct answer: B
Rationale: The correct answer is B: “Breast milk can be stored in a deep freezer for 12 months.” This instruction is important for mothers returning to work to ensure a long-term storage option for breast milk. Choice A is incorrect because thawed breast milk should be used within 24 hours if stored in the refrigerator. Choice C is incorrect as breast milk can be kept at room temperature for only up to 4 hours. Choice D is incorrect as thawed breast milk that is unused should not be refrozen due to safety concerns.
3. What is the typical sex chromosome pattern for females?
- A. XX
- B. XYY
- C. XY
- D. XXY
Correct answer: A
Rationale: The typical sex chromosome pattern for females is XX. Females have two X chromosomes, which is represented as XX. Choice B (XYY) is incorrect as it represents the sex chromosome pattern for males with an extra Y chromosome. Choice C (XY) is the sex chromosome pattern for males. Choice D (XXY) represents a genetic disorder known as Klinefelter syndrome, where males have an extra X chromosome.
4. Which of the following is a sexually transmitted infection that, in advanced stages, can attack major organ systems?
- A. Rubella
- B. Syphilis
- C. Cystic fibrosis
- D. Phenylketonuria
Correct answer: B
Rationale: Syphilis is the correct answer. Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. If left untreated, it can progress through various stages and potentially attack major organ systems, causing severe complications. Rubella, Cystic fibrosis, and Phenylketonuria are not sexually transmitted infections. Rubella is a viral infection, Cystic fibrosis is a genetic disorder affecting the lungs and digestive system, and Phenylketonuria is a genetic metabolic disorder. These conditions do not typically affect major organ systems in the same way as untreated syphilis.
5. The client who is 40 weeks gestation seems upset and tells the nurse that the physician told her she needs to have a nonstress test. The client asks why she needs the test. The nurse’s best response would be:
- A. This is a test to see if your stress level is affecting your baby’s growth and well-being.
- B. This is a test to see if your baby will be able to withstand the stress of labor.
- C. This is a test to assess your baby’s well-being now that you are due to deliver soon.
- D. This is a test to let us know if your baby needs to be delivered to avoid a bad outcome.
Correct answer: C
Rationale: The correct response is C because the nonstress test is specifically used to assess the baby's well-being close to the due date. It helps determine if the baby is receiving enough oxygen and nutrients in the womb. Choice A is incorrect as the test does not assess the mother's stress level but focuses on fetal well-being. Choice B is incorrect as the test does not predict the baby's ability to withstand labor. Choice D is incorrect because the test does not solely indicate if the baby needs to be delivered to avoid a bad outcome; rather, it assesses the current well-being of the baby.
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