HESI LPN
HESI Focus on Maternity Exam
1. 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?
- A. Ampicillin 1 gram IV push every 8 hours
- B. Betamethasone 12 mg deep IM
- C. Terbutaline 0.25 mg subcutaneously every 15 minutes for 3 doses
- D. Butorphanol tartrate 1 mg IV push every 2 hours as needed
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.
2. A client at 38 weeks gestation is admitted to labor and delivery with a complaint of contractions 5 minutes apart. While the client is in the bathroom changing into a hospital gown, the nurse hears the noise of a baby. What should the nurse do first?
- A. Push the call light for help
- B. Inspect the client's perineum
- C. Notify a healthcare provider
- D. Turn on the infant warmer
Correct answer: B
Rationale: Inspecting the client's perineum immediately is necessary to assess if the baby is being delivered, which would require urgent action. Pushing the call light for help (Choice A) may delay the assessment and immediate action needed. Notifying a healthcare provider (Choice C) might cause further delays, as the situation requires urgent attention. Turning on the infant warmer (Choice D) is not the priority; ensuring safe delivery and assessment of the baby's condition come first.
3. A client who is 24 weeks gestation arrives at the clinic reporting swollen hands. On examination, the nurse notes the client has had a rapid weight gain over six weeks. Which action should the nurse implement next?
- A. Review the client's previous blood pressures in the chart.
- B. Obtain the client's blood pressure.
- C. Observe and time the client's contractions.
- D. Examine the client for pedal edema.
Correct answer: B
Rationale: Swollen hands and rapid weight gain could be signs of preeclampsia, so the next step is to check the client's blood pressure. Elevated blood pressure is a key indicator in assessing for preeclampsia in pregnancy. Reviewing the client's previous blood pressures may provide additional context but obtaining the current blood pressure is crucial for immediate assessment. Observing and timing contractions are not relevant in this scenario as the client is not presenting with signs of active labor. Examining for pedal edema is important in assessing for fluid retention, but obtaining the blood pressure takes precedence in this case due to the potential seriousness of preeclampsia.
4. After mitosis, the genetic code is identical in new cells unless _________ occur through radiation or other environmental influences.
- A. reductions
- B. expulsions
- C. conceptions
- D. mutations
Correct answer: D
Rationale: After mitosis, the genetic code is typically preserved and remains identical in the new cells. However, mutations can occur due to radiation or environmental influences, leading to changes in the DNA sequence and potentially altering the genetic code. Therefore, the correct answer is 'mutations.' Choices A, B, and C are incorrect because reductions, expulsions, and conceptions do not accurately describe the changes in the genetic code that can result from external factors. Mutations are the only option that reflects the alteration in the genetic code caused by external influences, making it the correct choice in this context.
5. 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.
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