HESI RN
HESI Maternity 55 Questions Quizlet
1. In planning care for a client at 30-weeks gestation experiencing preterm labor, what maternal prescription is most important in preventing this fetus from developing respiratory syndrome?
- A. Betamethasone (Celestone) 12mg deep IM.
- B. Butorphanol 1mg IV push q2h PRN pain.
- C. Ampicillin 1g IV push q8h.
- D. Terbutaline (Brethine) 0.25mg subcutaneously q15 minutes x3.
Correct answer: A
Rationale: The administration of Betamethasone (Celestone) is crucial in cases of preterm labor to promote fetal lung maturation and reduce the risk of respiratory distress syndrome in the newborn. Betamethasone helps enhance the production of surfactant in the fetal lungs, improving their functionality and decreasing the likelihood of respiratory complications upon birth. Butorphanol is an analgesic and not indicated for preventing respiratory syndrome in preterm infants. Ampicillin is an antibiotic used for infection prevention and treatment, not for fetal lung maturation. Terbutaline is a tocolytic agent used to inhibit contractions, but it does not have a direct effect on fetal lung maturity.
2. A mother calls the school nurse to report that her preschool-aged child was bitten by a tick during a school outing last week. The mother removed the tick and flushed it down the toilet. What action should the school nurse take?
- A. Refer the mother to the Centers for Disease Control and Prevention.
- B. Report the incident to the school principal.
- C. Culture the bite site when the child returns to school.
- D. Schedule a test for Lyme disease if a rash appears.
Correct answer: D
Rationale: The correct action to take in this situation is to schedule a test for Lyme disease if a rash appears. Lyme disease can be transmitted through tick bites, and a rash is a common early symptom of the disease. Testing for Lyme disease is crucial for timely diagnosis and treatment to prevent complications. Referring the mother to the Centers for Disease Control and Prevention (Choice A) is not necessary at this point, as immediate testing for Lyme disease is more appropriate. Reporting the incident to the school principal (Choice B) is not the most direct action to address the potential health concern. Culturing the bite site when the child returns to school (Choice C) may not be as effective as scheduling a test for Lyme disease if a rash appears, as the latter is a more specific diagnostic measure for Lyme disease.
3. The healthcare provider prescribes magnesium sulfate 6 grams intravenously (IV) to be infused over 20 minutes for a client with preterm labor. The IV bag contains magnesium sulfate 20 grams in dextrose 5% in water 500 mL. How many mL/hour should the nurse set the infusion pump?
- A. 150 mL/hour
- B. 250 mL/hour
- C. 50 mL/hour
- D. 275 mL/hour
Correct answer: A
Rationale: To calculate the infusion rate, first, determine the total volume to be infused (6 grams of magnesium sulfate) over a specific time frame (20 minutes). Then, calculate the concentration of magnesium sulfate in the IV bag to determine the mL/hour rate. The IV bag contains 20 grams of magnesium sulfate in 500 mL of solution, which means there are 4 grams of magnesium sulfate per 100 mL. Since 6 grams are required, the nurse should set the pump to deliver 150 mL/hour to infuse the prescribed dose over 20 minutes. Choice B, 250 mL/hour, is incorrect because it miscalculates the amount of magnesium sulfate infused per hour. Choice C, 50 mL/hour, is incorrect as it is too slow to deliver the required dose in the specified time frame. Choice D, 275 mL/hour, is incorrect as it overestimates the infusion rate and would deliver the dose too quickly.
4. After each feeding, a 3-day-old newborn is spitting up large amounts of Enfamil® Newborn Formula, a nonfat cow's milk formula. The pediatric healthcare provider changes the neonate's formula to Similac® Soy Isomil® Formula, a soy protein isolate-based infant formula. What information should the LPN/LVN provide to the mother about the newly prescribed formula?
- A. The new formula is a coconut milk formula used with babies with impaired fat absorption.
- B. Enfamil® Formula is a demineralized whey formula that is needed with diarrhea.
- C. The new formula is a casein protein source that is low in phenylalanine.
- D. Similac® Soy Isomil® Formula is a soy-based formula that contains sucrose.
Correct answer: D
Rationale: The LPN/LVN should inform the mother that Similac® Soy Isomil® Formula is a soy-based formula containing sucrose. This formula is suitable for infants with cow's milk protein allergy or intolerance, which may be the reason for the newborn spitting up large amounts of the previous cow's milk formula.
5. A primipara has delivered a stillborn fetus at 30 weeks gestation. To assist the parents in the grieving process, which intervention is most important for the nurse to implement?
- A. Provide an opportunity for the parents to hold their infant in privacy.
- B. Assist the couple in completing a request for autopsy.
- C. Encourage the couple to seek family counseling within the next few weeks.
- D. Explain the possible causes of fetal demise.
Correct answer: A
Rationale: Allowing the parents to hold their infant in privacy is crucial for facilitating the grieving process after the loss of a stillborn child. This intimate moment can help the parents create memories, bond with their baby, and start the healing process.
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