HESI LPN
HESI Maternity 55 Questions
1. The embryo and fetus develop within a protective _______ in the uterus.
- A. amniotic sac
- B. umbilical cord
- C. neural tube
- D. embryonic disk
Correct answer: A
Rationale: The correct answer is A, the amniotic sac. The amniotic sac is a fluid-filled structure that surrounds and protects the developing embryo and fetus in the uterus. It provides a cushion against external pressure, allows for movement and growth, and helps maintain a stable environment for the developing fetus. Choices B, C, and D are incorrect. The umbilical cord connects the fetus to the placenta and serves as a conduit for nutrients and waste; the neural tube is a structure that forms the central nervous system in early embryonic development; and the embryonic disk is a structure that forms during gastrulation, one of the early stages of embryonic development.
2. The mother of a breastfeeding 24-hour old infant is very concerned about the techniques involved in breastfeeding. She calls the nurse with each feeding to seek reassurance that she is doing it right. She tells the nurse, "Now my daughter is not getting enough to eat." Which response would be best for the nurse to make?
- A. Feed your baby hourly until you feel confident that your child is receiving enough milk.
- B. Don't worry, soon your milk will come in, and you will feel how full your breasts are.
- C. Since you are so concerned, you should probably supplement breastfeeding with formula.
- D. If your baby's urine is straw-colored, she's getting enough milk.
Correct answer: D
Rationale: Reassuring the mother that the baby's urine color can be an indicator of adequate hydration can help her feel more confident in her breastfeeding.
3. Which procedure is used to detect neural tube defects such as spina bifida and certain chromosomal abnormalities?
- A. Artificial insemination
- B. Amniocentesis
- C. Endometriosis
- D. Alpha-fetoprotein (AFP) assay
Correct answer: D
Rationale: The correct answer is the Alpha-fetoprotein (AFP) assay. This blood test measures the level of AFP in a pregnant woman's blood, aiding in the detection of neural tube defects and certain chromosomal abnormalities in the fetus. Choice A, artificial insemination, is a method used to facilitate fertilization and is not related to detecting fetal abnormalities. Choice B, amniocentesis, involves collecting amniotic fluid for genetic testing, not directly measuring AFP levels. Choice C, endometriosis, is a medical condition involving abnormal tissue growth and is not a procedure for detecting fetal abnormalities. Therefore, the Alpha-fetoprotein (AFP) assay is the most appropriate option for detecting neural tube defects such as spina bifida and certain chromosomal abnormalities.
4. A client has active genital herpes simplex virus type 2. Which of the following medications should the nurse plan to administer?
- A. Metronidazole
- B. Penicillin
- C. Acyclovir
- D. Gentamicin
Correct answer: C
Rationale: Acyclovir is the antiviral medication specifically used to treat herpes simplex virus infections, including genital herpes caused by herpes simplex virus type 2. Metronidazole (Choice A) is an antibiotic used for different types of infections, but not for viral infections like herpes. Penicillin (Choice B) is an antibiotic effective against bacterial infections, not viruses like herpes. Gentamicin (Choice D) is an antibiotic mainly used to treat bacterial infections, not viral infections like herpes.
5. Which FHR finding is the most concerning to the nurse providing care to a laboring client?
- A. Accelerations with fetal movement.
- B. Early decelerations.
- C. Average FHR of 126 beats per minute.
- D. Late decelerations.
Correct answer: D
Rationale: Late decelerations are caused by uteroplacental insufficiency, resulting in fetal hypoxemia. They are considered ominous if persistent, indicating compromised oxygen supply to the fetus. Accelerations with fetal movement (Choice A) are reassuring signs of fetal well-being. Early decelerations (Choice B) are typically benign, associated with head compression during contractions. An average FHR of 126 beats per minute (Choice C) falls within the normal range for fetal heart rate and is not concerning. Therefore, the most concerning FHR finding in a laboring client is late decelerations (Choice D).
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