HESI RN
HESI Maternity Test Bank
1. 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.
2. What is the most important assessment for the healthcare provider to conduct before the administration of epidural anesthesia to a client at 40 weeks' gestation?
- A. Maternal blood pressure.
- B. Level of pain sensation.
- C. Station of presenting part.
- D. Variability of fetal heart rate.
Correct answer: A
Rationale: Assessing maternal blood pressure is crucial before administering epidural anesthesia because it can cause hypotension, affecting both the mother and the fetus. Hypotension can lead to decreased placental perfusion, potentially compromising the fetal oxygen supply. Monitoring and maintaining maternal blood pressure within a safe range are essential to ensure the well-being of both the mother and the fetus during the administration of epidural anesthesia. The other options, such as assessing the level of pain sensation, station of presenting part, and variability of fetal heart rate, are important in obstetric care but are not as critical as monitoring maternal blood pressure to prevent complications related to epidural anesthesia administration.
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. A 34-week primigravida woman with preeclampsia is receiving Lactated Ringer’s 500ml with magnesium sulfate 20 grams at the rate of 3g/hr. How many ml/hr should the nurse program the infusion pump?
- A. 75ml/hr
- B. 100ml/hr
- C. 50ml/hr
- D. 25ml/hr
Correct answer: A
Rationale: To calculate the infusion rate, divide the total quantity to be infused (500ml) by the total time (1 hour) which equals 500ml/hr. Since the magnesium sulfate is being given at 3g/hr, and 1g of magnesium sulfate is in 5ml of solution, the rate will be 3g/hr x 5ml/g = 15ml/hr. Therefore, the total infusion rate should be 500ml/hr + 15ml/hr = 515ml/hr. Hence, the nurse should program the infusion pump to deliver 75ml/hr (515ml/hr total - 500ml/hr Lactated Ringer's rate). This choice is correct because it accounts for both the Lactated Ringer's and magnesium sulfate rates. Choice B, 100ml/hr, is incorrect as it does not consider the additional magnesium sulfate infusion rate. Choice C, 50ml/hr, is incorrect because it does not account for the magnesium sulfate infusion. Choice D, 25ml/hr, is incorrect as it is too low and does not consider the magnesium sulfate being infused concurrently.
5. A woman who delivered a 9-pound baby via cesarean section under spinal anesthesia is recovering in the post-anesthesia care unit. Her fundus is firm at the umbilicus, and a continuous trickle of bright red blood with no clots is observed by the nurse. Which action should the nurse implement?
- A. Assess her blood pressure.
- B. Apply an ice pack to the perineum.
- C. Allow the infant to breastfeed.
- D. Massage the fundus vigorously.
Correct answer: A
Rationale: In this situation, continuous bleeding despite a firm fundus suggests a possible laceration. The appropriate action for the nurse to take is to assess the woman's blood pressure. This helps determine the severity of blood loss and guides further interventions, such as identifying the need for additional assessments or interventions to control bleeding. Applying an ice pack to the perineum (choice B) would not address the ongoing bleeding issue. Allowing the infant to breastfeed (choice C) may not be safe if there is significant bleeding. Massaging the fundus vigorously (choice D) is contraindicated when there is continuous bleeding as it can worsen the bleeding or cause further harm.
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