HESI RN
HESI Maternity Test Bank
1. The healthcare provider is preparing to administer magnesium sulfate to a laboring client whose blood pressure has increased from 110/60 mmHg to 140/90 mmHg. Which action is the highest priority?
- A. Provide a quiet environment with subdued lighting.
- B. Have calcium gluconate immediately available.
- C. Assess deep tendon reflexes (DTRs) every 4 hours.
- D. Insert a Foley catheter with a urimeter to monitor hourly output.
Correct answer: B
Rationale: Having calcium gluconate readily available is crucial when administering magnesium sulfate, as it serves as the antidote in case of magnesium toxicity. Magnesium sulfate can lead to respiratory depression and cardiac arrest in cases of overdose or toxicity, making the prompt availability of calcium gluconate essential for immediate administration to counteract these effects. Providing a quiet environment with subdued lighting may be beneficial for the client's comfort but is not the highest priority in this situation. Assessing deep tendon reflexes every 4 hours is important when administering magnesium sulfate, but it is not the highest priority compared to having calcium gluconate available. Inserting a Foley catheter with a urimeter to monitor hourly output is not the highest priority when preparing to administer magnesium sulfate in this scenario.
2. A client in active labor is admitted with preeclampsia. Which assessment finding is most significant in planning this client's care?
- A. Patellar reflex 4+
- B. Blood pressure 158/80
- C. Four-hour urine output 240 ml
- D. Respirations 12/minute
Correct answer: A
Rationale: The correct answer is A: 'Patellar reflex 4+'. Hyperreflexia is a sign of severe preeclampsia and increases the risk of seizures, indicating the need for immediate intervention. Monitoring and addressing this finding are crucial in managing the client's condition and preventing complications.
3. A client whose labor is being augmented with an oxytocin (Pitocin) infusion requests an epidural for pain control. Findings of the last vaginal exam, performed 1 hour ago, were 3 cm cervical dilation, 60% effacement, and a -2 station. What action should the nurse implement first?
- A. Decrease the oxytocin infusion rate
- B. Determine current cervical dilation
- C. Request placement of the epidural
- D. Give a bolus of intravenous fluids
Correct answer: D
Rationale: In a client receiving an oxytocin infusion who requests an epidural, it is crucial to give a bolus of intravenous fluids first. This action helps prevent hypotension, a common side effect of epidural anesthesia, before the placement of the epidural. Maintaining adequate hydration is essential to support maternal blood pressure stability during the procedure.
4. After a client delivered vaginally 2 days ago, what information should you share with her if she wants to resume using her diaphragm for birth control?
- A. The diaphragm is the most effective form of contraception.
- B. The diaphragm must be refitted after childbirth.
- C. Vaseline lubricant should be used when inserting the diaphragm.
- D. The diaphragm should be inserted 2 to 4 hours before intercourse.
Correct answer: B
Rationale: After childbirth, the diaphragm must be refitted to ensure a proper fit and effectiveness. Changes in the body post-delivery can affect the fit of the diaphragm, making it necessary to get refitted. Choice A is incorrect because while the diaphragm can be effective, it is not the most effective form of contraception. Choice C is incorrect because oil-based lubricants like Vaseline can damage latex diaphragms. Choice D is incorrect because the diaphragm should be inserted no more than 2 hours before intercourse, not 2 to 4 hours.
5. 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.
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