HESI LPN
HESI Focus on Maternity Exam
1. Which of the following is most likely to develop sickle cell anemia?
- A. European American
- B. Native American
- C. African American
- D. Asian American
Correct answer: C
Rationale: Sickle cell anemia is most commonly found in individuals of African American descent. This is because sickle cell trait provides some protection against malaria, and historically, regions where malaria is or was prevalent have higher rates of sickle cell anemia. Therefore, individuals with African ancestry are at a higher risk of developing sickle cell anemia compared to other populations. Choices A, B, and D are less likely to develop sickle cell anemia due to lower genetic prevalence in their respective populations.
2. A client is receiving oxytocin by continuous IV infusion for labor induction. Which of the following interventions should the nurse include in the plan?
- A. Increase the infusion rate every 30 to 60 minutes.
- B. Maintain the client in a supine position.
- C. Titrate the infusion rate by 4 milliunits/min.
- D. Limit IV intake to 4 L per 24 hours.
Correct answer: A
Rationale: The correct answer is to increase the infusion rate every 30 to 60 minutes. This approach allows for the careful monitoring and adjustment of oxytocin administration during labor induction. Choice B is incorrect because maintaining the client in a supine position can decrease blood flow to the placenta and compromise fetal oxygenation. Choice C is incorrect as titrating the infusion rate by 4 milliunits/min is not a standard practice for oxytocin administration. Choice D is incorrect as limiting IV intake to 4 L per 24 hours is not specifically related to the administration of oxytocin for labor induction.
3. According to a study in the year 2013 by Fellman, if a woman is a twin, if her mother was a twin, or if she has previously borne twins, then:
- A. she will bear only monozygotic (MZ) twins.
- B. the chances of her becoming pregnant decrease.
- C. she is likely to be a healthy mother.
- D. the chances rise that she will bear twins.
Correct answer: D
Rationale: According to the study, the chances of a woman bearing twins increase if she is a twin herself, if her mother was a twin, or if she has previously borne twins. Therefore, the correct answer is D. Choice A is incorrect because the study does not specify that she will bear only monozygotic twins. Choice B is incorrect as the study does not mention any decrease in the chances of becoming pregnant. Choice C is incorrect because the study does not provide information about the woman's health status, focusing instead on the likelihood of bearing twins.
4. A newborn is 1 hour old with a respiratory rate of 50/min, a heart rate of 130/min, and an axillary temperature of 36.1°C (97°F). Which of the following actions should be taken?
- A. Give the newborn a warm bath.
- B. Apply a cap to the newborn's head.
- C. Reposition the newborn.
- D. Obtain an oxygen saturation level.
Correct answer: B
Rationale: Applying a cap to the newborn's head is the correct action in this scenario. Newborns are at risk of heat loss due to their high surface area to volume ratio, and maintaining their body temperature is crucial to prevent hypothermia. Giving a warm bath can further increase heat loss and is not recommended. Repositioning the newborn may not address the primary concern of temperature regulation. While monitoring oxygen saturation is important, addressing thermal regulation takes precedence in this situation.
5. 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.
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