HESI LPN
HESI Focus on Maternity Exam Questions
Question 1 of 5
Dizygotic (DZ) twins share _________ percent of their genes.
Correct Answer: C
Rationale: Dizygotic (DZ) twins share approximately 50% of their genes. This is because dizygotic twins, also known as fraternal twins, originate from two separate fertilized eggs and share similar genetic similarity to regular siblings. Choice A (100%) is incorrect because if twins shared 100% of their genes, they would be identical twins (monozygotic). Choice B (75%) is incorrect as it is not the typical genetic similarity seen in dizygotic twins. Choice D (25%) is incorrect as it represents a significantly lower genetic similarity than what is observed in dizygotic twins.
Question 2 of 5
A nurse on a labor and delivery unit is providing teaching to a client who plans to use hypnosis to control labor pain. Which of the following information should the nurse include?
Correct Answer: C
Rationale: Hypnosis can be an effective method of pain control during labor, especially if practiced during the prenatal period. Choice A is not specific to hypnosis and may not be directly related. Choice B is not essential for hypnosis and may not always be required. Choice D is incorrect as hypnosis has been shown to be beneficial for managing labor pain when done correctly, making it an inappropriate option to include in the teaching.
Question 3 of 5
The healthcare provider is planning care for a client at 30 weeks gestation who is experiencing preterm labor. Which medication is most important in preventing this fetus from developing respiratory distress syndrome?
Correct Answer: B
Rationale: Betamethasone is a corticosteroid given to stimulate fetal lung maturity and reduce the risk of respiratory distress syndrome in preterm infants. Ampicillin (Choice A) is an antibiotic and does not prevent respiratory distress syndrome. Terbutaline (Choice C) is a tocolytic used to inhibit contractions and does not directly prevent respiratory distress syndrome. Butorphanol tartrate (Choice D) is an opioid analgesic and does not have a role in preventing respiratory distress syndrome in preterm infants.
Question 4 of 5
A new mother who is a lacto-ovo vegetarian plans to breastfeed her infant. Which information should the nurse provide prior to discharge?
Correct Answer: A
Rationale: The correct answer is A: 'Continue prenatal vitamins with B12 while breastfeeding.' Vitamin B12 is crucial for lacto-ovo vegetarian mothers to prevent deficiencies in both the mother and the infant. Choice B is incorrect as Lanolin-based nipple cream is safe for use during breastfeeding. Choice C is not necessary unless there are specific indications for iron supplementation. Choice D, weighing the baby weekly, is important for monitoring growth but not specifically related to the mother's diet.
Question 5 of 5
What nursing action should the nurse implement for a 3-hour-old male infant who presents with cyanotic hands and feet, an axillary temperature of 96.5°F (35.8°C), a respiratory rate of 40 breaths per minute, and a heart rate of 165 beats per minute?
Correct Answer: B
Rationale: The correct nursing action is to gradually warm the infant under a radiant heat source. The infant is presenting with signs of cold stress, indicated by cyanotic extremities and a low body temperature. Gradual warming is crucial to stabilize the infant's temperature and prevent further complications. Administering oxygen, notifying the pediatrician, or performing a heel-stick are not the priority actions in this scenario and may not address the immediate need to raise the infant's body temperature.