HESI LPN
HESI Focus on Maternity Exam
1. A new mother who is a lacto-ovo vegetarian plans to breastfeed her infant. Which information should the nurse provide prior to discharge?
- A. Continue prenatal vitamins with B12 while breastfeeding
- B. Avoid using Lanolin-based nipple cream or ointment
- C. Offer iron-fortified supplemental formula daily
- D. Weigh the baby weekly to evaluate the newborn's growth
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.
2. A 30-year-old primigravida delivers a nine-pound (4082 gram) infant vaginally after a 30-hour labor. What is the priority nursing action for this client?
- A. Assess the blood pressure for hypertension.
- B. Gently massage fundus every four hours.
- C. Observe for signs of uterine hemorrhage.
- D. Encourage direct contact with the infant.
Correct answer: C
Rationale: After a prolonged labor and delivery of a large infant, the client is at an increased risk for uterine atony and postpartum hemorrhage, making observation for signs of bleeding a priority. Assessing the blood pressure for hypertension (Choice A) is not the priority in this situation as the immediate concern is postpartum hemorrhage. Gently massaging the fundus every four hours (Choice B) is a routine postpartum care activity but is not the priority in this scenario. Encouraging direct contact with the infant (Choice D) is important for bonding but does not address the immediate risk of uterine hemorrhage after delivery.
3. What causes cystic fibrosis?
- A. Sex-linked abnormality.
- B. Abnormality in the 21st pair of chromosomes.
- C. Recessive gene.
- D. Single segment found only on the Y chromosome.
Correct answer: C
Rationale: Cystic fibrosis is a genetic disorder caused by inheriting two copies of a recessive gene, one from each parent. This means that both parents must carry at least one copy of the faulty gene for a child to inherit the condition. Choice A is incorrect because cystic fibrosis is not linked to the sex chromosomes. Choice B is incorrect as cystic fibrosis is not caused by an abnormality in the 21st pair of chromosomes but by a specific gene mutation. Choice D is also incorrect as cystic fibrosis is not related to the Y chromosome, which is specific to males.
4. Which field of biology studies heredity?
- A. Etiology.
- B. Ecology.
- C. Genetics.
- D. Eugenics.
Correct answer: C
Rationale: Genetics is the branch of biology that focuses on the study of heredity and variation in organisms. Etiology (choice A) deals with the causes of diseases, not heredity. Ecology (choice B) is concerned with the relationships between organisms and their environment, not specifically heredity. Eugenics (choice D) is a controversial field that involves improving the genetic quality of the human population through selective breeding, which is different from the study of heredity itself.
5. A primiparous woman presents in labor with the following labs: hemoglobin 10.9 g/dL, hematocrit 29%, hepatitis surface antigen positive, Group B Streptococcus positive, and rubella non-immune. Which intervention should the nurse implement?
- A. Transfuse 2 units of packed red blood cells.
- B. Give measles, mumps, rubella vaccine 0.5 mL.
- C. Administer ampicillin 2 grams intravenously.
- D. Inject hepatitis B immune globulin 0.5 milliliters.
Correct answer: C
Rationale: The correct intervention in this scenario is to administer ampicillin 2 grams intravenously. This is crucial to prevent Group B Streptococcus infection in the newborn during delivery. Option A, transfusing packed red blood cells, is not indicated based on the hemoglobin and hematocrit levels provided. Option B, giving measles, mumps, rubella vaccine, is not necessary at this time. Option D, injecting hepatitis B immune globulin, is not appropriate for the conditions presented in the question.
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