HESI RN
HESI Maternity Test Bank
1. 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.
2. A 4-week-old premature infant has been receiving epoetin alfa (Epogen) for the last three weeks. Which assessment finding indicates to the healthcare provider that the drug is effective?
- A. Slowly increasing urinary output over the last week.
- B. Respiratory rate changes from the 40s to the 60s.
- C. Changes in apical heart rate from the 180s to the 140s.
- D. Change in indirect bilirubin from 12 mg/dl to 8 mg/dl.
Correct answer: C
Rationale: The correct answer is C. Epoetin alfa stimulates erythropoiesis, leading to an increase in red blood cell production and improving oxygen-carrying capacity. As the oxygenation status improves, there is a reduction in heart rate. Therefore, changes in apical heart rate from the 180s to the 140s indicate that the drug is effective. Choices A, B, and D are incorrect because they do not directly reflect the expected outcome of epoetin alfa therapy. Increasing urinary output, changes in respiratory rate, and decreasing bilirubin levels are not primary indicators of the drug's effectiveness in this context.
3. A 16-year-old gravida 1, para 0 client has just been admitted to the hospital with a diagnosis of eclampsia. She is not presently convulsing. Which intervention should the nurse plan to include in this client’s nursing care plan?
- A. Keep airway equipment at the bedside.
- B. Allow liberal family visitation.
- C. Monitor blood pressure, pulse, and respirations q4h.
- D. Assess temperature q1h.
Correct answer: A
Rationale: In a client with eclampsia, the priority intervention is to keep airway equipment at the bedside to manage potential convulsions effectively. This proactive measure is essential to ensure rapid response and intervention in case of convulsions, which can occur in clients with eclampsia.
4. A full-term, 24-hour-old infant in the nursery regurgitates and suddenly turns cyanotic. What should the nurse do first?
- A. Suction the oral and nasal passages.
- B. Give oxygen by positive pressure.
- C. Stimulate the infant to cry.
- D. Turn the infant onto the right side.
Correct answer: A
Rationale: In a situation where an infant regurgitates and turns cyanotic, the priority action should be to clear any potential airway obstruction. Suctioning the oral and nasal passages is crucial to ensure the infant's airway is clear and allow for proper breathing. This intervention takes precedence over providing oxygen, stimulating the infant to cry, or repositioning the infant.
5. The nurse is caring for a postpartum client who is complaining of severe pain and a feeling of pressure in her perineum. Her fundus is firm, and she has a moderate lochial flow. On inspection, the nurse finds that a perineal hematoma is beginning to form. Which assessment finding should the nurse obtain first?
- A. Urinary output and fluid intake.
- B. Hemoglobin and hematocrit.
- C. Abdominal contour and bowel sounds.
- D. Heart rate and blood pressure.
Correct answer: D
Rationale: In a postpartum client with a perineal hematoma, assessing heart rate and blood pressure is crucial as it can help determine the client's circulatory status. A perineal hematoma has the potential to cause significant blood loss leading to hypovolemia. Monitoring vital signs like heart rate and blood pressure can provide immediate information on the client's hemodynamic stability and guide further interventions if needed.
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