HESI LPN
HESI Fundamentals Exam
1. The healthcare professional prepares a 1,000 ml IV of 5% dextrose and water to be infused over 8 hours. The infusion set delivers 10 drops per milliliter. The healthcare professional should regulate the IV to administer approximately how many drops per minute?
- A. 80
- B. 8
- C. 21
- D. 25
Correct answer: C
Rationale: To calculate the drops per minute for the IV infusion, first determine the total drops to be infused over 8 hours. 1,000 ml to be infused over 8 hours means 125 ml per hour (1000 ml / 8 hours = 125 ml/hr). Since the infusion set delivers 10 drops per ml, 125 ml/hr x 10 drops/ml = 1250 drops/hr. To find drops per minute, divide the drops per hour by 60 (minutes in an hour): 1250 drops/hr / 60 minutes = 20.83 drops/minute, which rounds up to 21 drops per minute (Option C). This rate ensures the correct infusion rate over 8 hours. Choices A, B, and D are incorrect calculations and do not provide the appropriate infusion rate needed to administer the IV over the specified time period.
2. A nurse is caring for a client receiving fluid through a peripheral IV catheter. Which of the following findings at the IV site should the nurse identify as infiltration?
- A. purulent exudate
- B. warmth
- C. skin blanching
- D. bleeding
Correct answer: C
Rationale: Infiltration occurs when the IV fluid leaks into the surrounding tissue instead of entering the bloodstream properly. Skin blanching, swelling, and coolness at the IV site are typical signs of infiltration. Purulent exudate (choice A) is associated with infection, warmth (choice B) can indicate phlebitis, and bleeding (choice D) may occur if the IV catheter punctures a blood vessel.
3. 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.
4. A client has a new prescription for a home oxygen concentrator. Which of the following instructions should the nurse provide to the client and their family?
- A. Check the cord routinely for frays or tearing
- B. Use oxygen around open flames
- C. Store oxygen concentrator in a closet
- D. Wear synthetic clothing to prevent static electricity
Correct answer: A
Rationale: The correct answer is to instruct the client and their family to check the cord routinely for frays or tearing. This is crucial to ensure the safety and proper function of the oxygen concentrator. Choice B is incorrect because oxygen should never be used around open flames due to the risk of fire. Choice C is also incorrect as oxygen cylinders or concentrators should not be stored in a closet due to ventilation and safety concerns. Choice D is incorrect because synthetic clothing can generate static electricity, which could pose a risk around oxygen equipment.
5. A 25-year-old primigravida at 16 weeks gestation is admitted to the hospital with a diagnosis of hyperemesis gravidarum. Which nursing diagnosis should have the highest priority?
- A. Fluid volume deficit
- B. Altered nutrition: less than body requirements
- C. Anxiety related to new situational crisis
- D. Activity intolerance related to fatigue
Correct answer: A
Rationale: In a case of hyperemesis gravidarum, the priority nursing diagnosis should be addressing the Fluid volume deficit. This condition can lead to serious complications such as electrolyte imbalances and dehydration, which can endanger both the mother and the fetus if not managed promptly. Altered nutrition: less than body requirements is important but addressing the fluid volume deficit takes precedence as it poses an immediate threat. Anxiety related to new situational crisis and Activity intolerance related to fatigue are valid concerns, but they are secondary to the critical issue of fluid volume deficit in this scenario.
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