HESI LPN
HESI Fundamental Practice Exam
1. A charge nurse is teaching a newly licensed nurse about the care of a client who has methicillin-resistant Staphylococcus aureus (MRSA). Which of the following statements should the charge nurse identify as an indication that the newly licensed nurse understands the teaching?
- A. I should obtain a specimen for culture and sensitivity after the first dose of an antimicrobial.
- B. MRSA is usually resistant to vancomycin, so another antimicrobial will be prescribed.
- C. I will protect others from exposure when I transport the client outside the room.
- D. To decrease resistance, antimicrobial therapy is discontinued when the client is no longer febrile.
Correct answer: C
Rationale: The correct answer is C. Protecting others from exposure when transporting a client with MRSA is crucial in preventing the spread of infection. This statement demonstrates understanding of infection control measures. Stating that MRSA is usually resistant to vancomycin (choice B) is incorrect; vancomycin is often effective against MRSA. Obtaining a specimen for culture and sensitivity after the first dose of an antimicrobial (choice A) is unnecessary and not indicated. Discontinuing antimicrobial therapy when the client is no longer febrile (choice D) is incorrect because antimicrobial therapy should be completed as prescribed to prevent the development of resistant strains.
2. A healthcare professional is preparing to administer 0.9% sodium chloride (0.9% NaCl) 250 mL IV to infuse over 30 min. The drop factor of the manual IV tubing is 10 gtt/mL. How many gtt/min should the healthcare professional adjust the manual IV infusion to deliver? (Round the answer to the nearest whole number. Do not use a trailing zero.)
- A. 83 gtt/min
- B. 125 gtt/min
- C. 100 gtt/min
- D. 75 gtt/min
Correct answer: C
Rationale: To administer 250 mL over 30 min with a drop factor of 10 gtt/mL, the healthcare professional should adjust the IV infusion to deliver 100 gtt/min. The correct calculation is: (250 mL ÷ 30 min) x 10 gtt/mL = 100 gtt/min. This rate ensures the proper administration of the IV solution within the specified time frame. Choices A, B, and D are incorrect as they do not align with the accurate calculation based on the provided data.
3. A healthcare professional is planning to collect a liquid stool specimen from a client for ova and parasites. Inaccurate test results may result if the healthcare professional:
- A. Refrigerates the collected specimen
- B. Collects the specimen in a sterile container
- C. Delays the collection of the specimen
- D. Uses a non-contaminated collection container
Correct answer: A
Rationale: Refrigeration can kill the ova and parasites present in the stool specimen, leading to inaccurate test results. Storing the specimen in a cold environment can disrupt the integrity of the parasites and ova, affecting the accuracy of the test. Collecting the specimen in a sterile container (Choice B) is the correct procedure to prevent external contamination. Delaying the collection of the specimen (Choice C) may affect the freshness of the sample but does not directly impact the test results. Using a non-contaminated collection container (Choice D) is essential to maintain the sample's integrity but does not relate to the risk of killing ova and parasites through refrigeration.
4. A client is scheduled to have his alanine aminotransferase (ALT) level checked. The client asks the nurse to explain the laboratory test. Which of the following is an appropriate response by the nurse?
- A. “This test will indicate if you are at risk for developing blood clots.”
- B. “This test will determine if your heart is performing properly.”
- C. “This test will provide information about the function of your liver.”
- D. “This test is used to check how your kidneys are working.”
Correct answer: C
Rationale: The correct answer is C: “This test will provide information about the function of your liver.” Alanine aminotransferase (ALT) is an enzyme mainly found in the liver. An elevated ALT level may indicate liver damage or disease. Choices A, B, and D are incorrect because ALT is specifically related to liver function and not indicative of blood clot risk, heart performance, or kidney function.
5. 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.
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