HESI LPN
HESI Fundamental Practice Exam
1. The healthcare professional is preparing to administer potassium chloride intravenously to a client with hypokalemia. Which action is most important?
- A. Monitor the client's respiratory rate
- B. Check the client's urine output
- C. Administer the potassium chloride as a rapid IV push
- D. Dilute the potassium chloride in an appropriate IV solution
Correct answer: D
Rationale: The correct answer is to dilute the potassium chloride in an appropriate IV solution. Potassium chloride should never be administered as a rapid IV push as it can lead to severe complications, including cardiac arrhythmias. Diluting the medication and administering it slowly helps reduce the risk of adverse effects. Monitoring the client's respiratory rate (Choice A) and checking urine output (Choice B) are important aspects of patient assessment but not the most crucial when administering potassium chloride. Administering potassium chloride as a rapid IV push (Choice C) is dangerous and can result in serious harm to the client.
2. The healthcare professional is caring for a client with a peripheral intravenous (IV) line that has infiltrated. What is the most appropriate initial action for the healthcare professional to take?
- A. Apply a warm compress to the affected area.
- B. Discontinue the IV and restart it in another site.
- C. Aspirate the IV line and flush it with normal saline.
- D. Notify the healthcare provider immediately.
Correct answer: B
Rationale: The correct initial action when an IV line infiltrates is to discontinue the IV and restart it in another site. This is crucial to prevent complications such as tissue damage, phlebitis, and infection that can result from the infiltration. Applying a warm compress (Choice A) is not recommended as it can exacerbate the tissue damage caused by the infiltration. Aspirating the IV line and flushing it with normal saline (Choice C) is not appropriate for an infiltrated IV line as it does not address the main issue of infiltration. While notifying the healthcare provider (Choice D) is important, the immediate priority is to discontinue the infiltrated IV to prevent further harm and ensure proper delivery of fluids or medications.
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 healthcare professional is preparing to administer gentamicin 2 mg/kg via IV bolus to a client who weighs 220 lb. How many mg should the healthcare professional administer?
- A. 200 mg
- B. 100 mg
- C. 160 mg
- D. 180 mg
Correct answer: C
Rationale: To calculate the dosage correctly, the weight in pounds must first be converted to kilograms. 220 lb / 2.2 = 100 kg. Then, multiply the weight in kg by the dosage of 2 mg/kg: 2 mg/kg × 100 kg = 200 mg. Therefore, the correct dosage to administer is 200 mg, which is closest to option A. Option C (160 mg) is incorrect because it does not match the calculated dosage. Options B (100 mg) and D (180 mg) are also incorrect as they do not align with the correct calculation.
5. A nurse is caring for a young adult at a college health clinic. Which of the following actions should the nurse take first?
- A. Give the client information about immunization against meningitis.
- B. Tell the client to have a TB skin test every 2 years.
- C. Determine the client’s health risks.
- D. Teach the client about exercise recommendations.
Correct answer: C
Rationale: Assessing the client’s health risks is the priority as it provides essential information to guide subsequent care. By understanding the client’s health risks, the nurse can tailor health education and interventions, such as immunizations and lifestyle modifications, to address specific needs. Providing information about immunization against meningitis (Choice A) is important but should come after assessing health risks. Instructing the client to have a TB skin test every 2 years (Choice B) is relevant but not the initial step in care. Teaching about exercise recommendations (Choice D) is also essential but should follow the assessment of health risks.
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