HESI LPN
HESI Fundamentals Exam
1. Postoperative client with fluid volume deficit. Which change indicates successful treatment?
- A. Decrease in heart rate
- B. Increase in blood pressure
- C. Decrease in respiratory rate
- D. Increase in urine output
Correct answer: A
Rationale: A decrease in heart rate can indicate improved fluid balance and successful treatment of fluid volume deficit. When a client is experiencing fluid volume deficit, the heart rate typically increases as a compensatory mechanism to maintain cardiac output. As fluid volume is restored and the deficit is corrected, the heart rate should decrease back towards a normal range. Choices B, C, and D are less likely to be directly related to the successful treatment of fluid volume deficit. An increase in blood pressure may occur as a compensatory response to fluid volume deficit; a decrease in respiratory rate is not a typical indicator of fluid volume deficit correction; and an increase in urine output can be a sign of improved kidney function but may not directly reflect fluid volume status.
2. While starting an intravenous infusion (IV) for a client, the nurse notices that her gloved hands get spotted with blood. The client has not been diagnosed with any infection transmitted via the bloodstream. Which of the following should the nurse do as soon as the task is completed?
- A. Remove the gloves carefully and follow with hand hygiene
- B. Change gloves and continue
- C. Wash hands immediately without removing gloves
- D. Report the incident to the supervisor
Correct answer: A
Rationale: After completing the task, the nurse should remove the gloves carefully and follow with hand hygiene. This practice is crucial to prevent the transmission of any potential pathogens, maintain cleanliness, and reduce the risk of infection. Changing gloves and continuing without proper hand hygiene may lead to contamination. Washing hands immediately without removing gloves is not recommended as it does not ensure thorough hand hygiene. Reporting the incident to the supervisor should be done if there are specific protocols in place for such incidents, but immediate hand hygiene is the priority in this scenario to ensure patient and nurse safety.
3. The client is advised to take dexamethasone (Decadron) with food or milk. What is the physiological basis for this advice?
- A. Inhibits pepsin production
- B. Stimulates hydrochloric acid production
- C. Delays stomach emptying time
- D. Reduces hydrochloric acid production
Correct answer: B
Rationale: The correct answer is B: Stimulates hydrochloric acid production. Dexamethasone can stimulate the production of hydrochloric acid in the stomach, which may lead to irritation of the stomach lining. Taking dexamethasone with food or milk helps to neutralize or buffer the acid, reducing the risk of stomach irritation. Choice A is incorrect because dexamethasone does not inhibit pepsin production. Choice C is incorrect as dexamethasone does not slow stomach emptying time. Choice D is incorrect as dexamethasone does not reduce hydrochloric acid production.
4. A healthcare professional is preparing to administer dextrose 5% in water (D5W) 1,000-mL IV to infuse over 10 hr. How many mL/hr should the IV infusion pump be set to deliver? (Round the answer to the nearest whole number. Do not use a trailing zero.)
- A. 100 mL/hr
- B. 150 mL/hr
- C. 75 mL/hr
- D. 50 mL/hr
Correct answer: A
Rationale: To infuse 1,000 mL over 10 hr, the IV pump should be set to deliver 100 mL/hr. This calculation is derived by dividing the total volume (1,000 mL) by the total time in hours (10 hr), resulting in the infusion rate of 100 mL/hr. Choices B, C, and D are incorrect as they do not accurately reflect the correct calculation for this scenario.
5. A school-aged child has had a long leg (hip to ankle) synthetic cast applied 4 hours ago. Which statement from the mother indicates that teaching has been inadequate?
- A. I will keep the cast covered the next day to prevent skin burning.
- B. I can apply an ice pack over the area to relieve itching inside the cast.
- C. The cast should be propped on at least 2 pillows when my child is lying down.
- D. I think I remember that standing cannot be done until after 72 hours.
Correct answer: D
Rationale: The correct answer is D because there is no need to wait 72 hours before allowing the child to stand. The synthetic cast does not affect weight-bearing capacity, and standing can be done as tolerated. Choice A is incorrect because keeping the cast covered can lead to damage or accidents. Choice B is acceptable as applying an ice pack can help relieve itching. Choice C is also correct as elevating the cast on pillows can help reduce swelling and promote comfort during rest.
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