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. When counseling a couple seeking information about conceiving, the LPN/LVN should know that ovulation usually occurs
- A. two weeks before menstruation.
- B. immediately after menstruation.
- C. immediately before menstruation.
- D. three weeks before menstruation.
Correct answer: A
Rationale: Ovulation typically occurs about 14 days before the start of the next menstrual period. This timing allows for the released egg to travel down the fallopian tube where it may be fertilized by sperm, leading to conception. Understanding the timing of ovulation is crucial for couples trying to conceive to increase their chances of success.
3. A new mother is having trouble breastfeeding her newborn son. He is making frantic rooting motions and will not grasp the nipple. What intervention would be most helpful to this mother?
- A. Ask the mother to stop feeding, comfort the infant, and then assist the mother to help the baby latch on.
- B. Use a nipple shield to help the baby latch on.
- C. Try a different breastfeeding position.
- D. Have another person help the mother with breastfeeding.
Correct answer: A
Rationale: In this scenario, the best intervention is to ask the mother to stop feeding, comfort the infant, and then assist her in helping the baby latch on. Stopping the feeding and providing comfort can reduce the infant's frustration and create a calmer environment for successful breastfeeding. Choice B, using a nipple shield, may not address the underlying issue causing the baby's difficulty latching. Choice C, trying a different breastfeeding position, can be attempted after the baby is calm and ready to latch. Choice D, having another person help, may not be necessary if the mother can be guided effectively on latching techniques.
4. What action should be implemented when preparing to measure the fundal height of a pregnant client?
- A. Have the client empty her bladder.
- B. Request the client lie on her left side.
- C. Perform Leopold's maneuvers first.
- D. Give the client some cold juice to drink.
Correct answer: A
Rationale: The correct action when preparing to measure the fundal height of a pregnant client is to have the client empty her bladder. This is essential to ensure an accurate measurement because a full bladder can displace the uterus and affect the accuracy of the assessment. Choice B is incorrect because the client should lie flat on her back, not on her left side, to measure fundal height accurately. Choice C is incorrect because Leopold's maneuvers are used to determine the position of the fetus, not to measure fundal height. Choice D is incorrect as giving the client cold juice is not necessary for measuring fundal height.
5. One hour after giving birth to an 8-pound infant, a client's lochia rubra has increased from small to large, and her fundus is boggy despite massage. The client's pulse is 84 beats/minute, and blood pressure is 156/96. The healthcare provider prescribes Methergine 0.2 mg IM × 1. What action should the healthcare provider take immediately?
- A. Give the medication as prescribed and monitor for efficacy.
- B. Encourage the client to breastfeed rather than bottle-feed.
- C. Have the client empty her bladder and massage the fundus.
- D. Call the healthcare provider to question the prescription.
Correct answer: D
Rationale: The correct action for the healthcare provider to take immediately is to call the healthcare provider to question the prescription. Methergine is contraindicated in clients with hypertension due to its potential to elevate blood pressure further. In this scenario, the client's blood pressure is already elevated at 156/96, making it unsafe to administer Methergine. The LPN/LVN should advocate for the client's safety by questioning the prescription to prevent potential harm.
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