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
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Nursing Elites

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?

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 woman at 36-weeks' gestation who is Rh negative is admitted to labor and delivery reporting abdominal cramping. She is placed on strict bedrest, and the fetal heart rate and contraction pattern are monitored with an external fetal monitor. The nurse notes a large amount of bright red vaginal bleeding. Which nursing intervention has the highest priority?

Correct answer: C

Rationale: The highest priority nursing intervention in this scenario is to assess the fetal heart rate and the client's contraction pattern. The presence of a large amount of bright red vaginal bleeding in a woman at 36-weeks' gestation who is Rh negative raises concerns about the well-being of the fetus. Monitoring the fetal heart rate and contraction pattern will provide crucial information about fetal status and help determine the appropriate course of action to ensure the safety and health of both the mother and the baby.

3. After a full-term vaginal delivery, a postpartum client's white blood cell count is 15,000/mm3. What action should the nurse take first?

Correct answer: A

Rationale: In postpartum clients, a white blood cell count of 15,000/mm3 can be within normal limits due to physiological changes that occur after childbirth. Checking the differential count would provide a more detailed analysis of the specific types of white blood cells present, helping to differentiate between normal postpartum changes and potential infection. This action allows the nurse to gather more information before escalating the situation to the healthcare provider or initiating other assessments. Assessing vital signs and the perineal area are important aspects of postpartum care but may not be the priority in this scenario where the white blood cell count can be influenced by normal physiological changes.

4. The nurse is conducting postpartum teaching with a mother who is breastfeeding her infant. When discussing birth control which method should the nurse recommend to this client as best for her to use in preventing unwanted pregnancy?

Correct answer: B

Rationale: Condoms and contraceptive foam or gel are safe options for breastfeeding mothers and do not affect milk supply.

5. The healthcare provider prescribes oxytocin 2 milliunits/minute to induce labor for a client at 41-weeks gestation. The nurse initiates an infusion of Ringer’s Lactate solution 1000 mL with oxytocin 10 units. How many mL/hour should the nurse program the infusion pump?

Correct answer: A

Rationale: To calculate the infusion rate in mL/hour, first, convert 2 milliunits/minute to milliunits/hour by multiplying by 60 to get 120 milliunits/hour. Then, calculate the mL/hour using the formula: milliunits/hour (120) × total volume (1000 mL) ÷ units in IV solution (10 units) = 1200 mL/hour. Therefore, the nurse should program the infusion pump to deliver 12 mL/hour to provide the prescribed dose of oxytocin. Choice B is incorrect as it does not reflect the correct calculation. Choice C is incorrect as it is not derived from the correct formula. Choice D is incorrect as it is not the result of the accurate calculation based on the provided information.

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