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 client at 32-weeks gestation is diagnosed with preeclampsia. Which assessment finding is most indicative of an impending convulsion?
- A. 3+ deep tendon reflexes and hyperreflexia.
- B. Periorbital edema, flashing lights, and aura.
- C. Epigastric pain in the third trimester.
- D. Recent decreased urinary output.
Correct answer: A
Rationale: In a client with preeclampsia, 3+ deep tendon reflexes and hyperreflexia are indicative of severe preeclampsia. These neurological signs suggest an increased risk for seizures, making option A the most indicative of an impending convulsion. Choices B, C, and D are not directly associated with an impending convulsion in a client with preeclampsia.
3. A mother who is breastfeeding her baby receives instructions from the nurse. Which instruction is most effective to prevent nipple soreness?
- A. Wear a cotton bra.
- B. Increase nursing time gradually.
- C. Correctly place the infant on the breast.
- D. Manually express a small amount of milk before nursing.
Correct answer: C
Rationale: The most effective instruction to prevent nipple soreness when breastfeeding is to correctly place the infant on the breast. Proper latch-on techniques ensure that the baby is properly positioned, reducing the risk of nipple soreness. When the baby is positioned correctly, they can nurse effectively without causing discomfort to the mother.
4. 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?
- A. Check the differential, as the WBC count can be normal for this client.
- B. Assess the client's temperature, pulse, and respirations every 4 hours.
- C. Notify the healthcare provider, as this finding may indicate infection.
- D. Assess the client's perineal area for signs of a perineal hematoma.
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.
5. A 6-year-old child is diagnosed with rheumatic fever and demonstrates associated chorea (sudden aimless movements of the arms and legs). Which information should the nurse provide to the parents?
- A. Muscle tension decreases with fine motor skill projects, so these activities should be encouraged.
- B. The chorea or movements are temporary and will eventually disappear.
- C. Permanent lifestyle changes are not needed to promote safety in the home.
- D. Consistent discipline is not directly related to controlling the movements.
Correct answer: B
Rationale: Chorea, or sudden aimless movements associated with rheumatic fever, is temporary in nature and will eventually disappear on its own. It is important for the nurse to reassure the parents that these movements are part of the condition and typically resolve over time without the need for permanent lifestyle changes or strict discipline. Providing accurate information and reassurance to the parents can help alleviate concerns and promote understanding of the condition's course. Choices A, C, and D are incorrect because muscle tension, permanent lifestyle changes, and consistent discipline are not directly related to the resolution of chorea in rheumatic fever.
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