HESI LPN
HESI Fundamentals Exam Test Bank
1. A nurse is preparing an infusion for a client who was hospitalized with deep-vein thrombosis. The orders read: 25,000 units of heparin in 250 mL of 0.9% sodium chloride to infuse at 800 units/hr. At what rate should the nurse set the infusion pump?
- A. 8 mL/hr
- B. 10 mL/hr
- C. 12 mL/hr
- D. 15 mL/hr
Correct answer: A
Rationale: To calculate the infusion rate, use the formula: (Desired units/hr / Total units) × Volume. In this case, it would be (800 units/hr / 25,000 units) × 250 mL = 8 mL/hr. Therefore, the nurse should set the infusion pump at 8 mL/hr. Choice B, 10 mL/hr, is incorrect because it does not match the calculated rate. Choices C and D, 12 mL/hr and 15 mL/hr respectively, are also incorrect as they do not align with the correct calculation based on the provided data.
2. A nurse is planning care for a client who has hypernatremia. Which of the following actions should the nurse include in the plan of care?
- A. Infuse hypotonic IV fluids.
- B. Implement a fluid restriction.
- C. Increase sodium intake.
- D. Administer sodium polystyrene sulfonate.
Correct answer: A
Rationale: The correct answer is to infuse hypotonic IV fluids. In hypernatremia, there is an elevated sodium concentration in the blood, and diluting it with hypotonic fluids helps to lower the sodium levels. Implementing a fluid restriction or increasing sodium intake would worsen hypernatremia by further concentrating sodium in the body. Administering sodium polystyrene sulfonate is used for treating hyperkalemia, not hypernatremia.
3. A nurse discovers a small paper fire in a trash can in a client’s bathroom. The client has been taken to safety and the alarm has been activated. Which of the following actions should the nurse take?
- A. Open the windows in the client’s room to allow smoke to escape.
- B. Obtain a class C fire extinguisher to extinguish the fire.
- C. Remove all electrical equipment from the client’s room.
- D. Place wet towels along the base of the door to the client’s room.
Correct answer: B
Rationale: The correct answer is B: Obtain a class C fire extinguisher to extinguish the fire. Using a class C fire extinguisher is appropriate for electrical fires, which can include fires involving electrical equipment or appliances. In this scenario, a paper fire in a trash can in the client's bathroom could potentially involve electrical components, making a class C fire extinguisher the most suitable choice. Option A, opening the windows, may help with ventilation but does not address the fire directly. Option C, removing electrical equipment, is a precautionary measure but does not address the immediate fire hazard. Option D, placing wet towels along the base of the door, is a strategy to prevent smoke from entering the room but does not extinguish the fire.
4. A client who is confused and pulling at the tubing of her IV is being cared for by a nurse. Which of the following actions should the nurse take before requesting a prescription for restraints from the provider?
- A. Place the client in a room away from the nurses’ station.
- B. Limit the client’s visitors.
- C. Give the client washcloths to fold.
- D. Close the door of the client’s room.
Correct answer: C
Rationale: Providing the client with washcloths to fold is a non-restrictive intervention that can help distract and engage the client, potentially reducing the need for restraints. This action promotes a therapeutic and calming environment for the confused client. Placing the client in a room away from the nurses’ station (Choice A) may not address the underlying issue of confusion and agitation. Limiting the client’s visitors (Choice B) may not directly assist in managing the client's behavior. Closing the door of the client’s room (Choice D) does not actively engage the client in a therapeutic intervention to address the behavior.
5. The pediatric clinic nurse examines a toddler with a tentative diagnosis of neuroblastoma. Findings observed by the nurse that are associated with this problem include which of these?
- A. Lymphedema and nerve palsy
- B. Hearing loss and ataxia
- C. Headaches and vomiting
- D. Abdominal mass and weakness
Correct answer: D
Rationale: Neuroblastoma, a common solid tumor in children, often presents with symptoms related to the mass effect it causes. Abdominal mass and weakness are classic signs of neuroblastoma due to the tumor originating in the adrenal glands near the kidneys and potentially compressing nearby structures. Lymphedema and nerve palsy (Choice A) are not typically associated with neuroblastoma. Hearing loss and ataxia (Choice B) are more common in conditions affecting the central nervous system rather than neuroblastoma. Headaches and vomiting (Choice C) are nonspecific symptoms and are less commonly linked to neuroblastoma compared to the characteristic abdominal findings.
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