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. During an eye irrigation for a client exposed to smoke and ash, which nursing action should receive the highest priority?
- A. Wearing gloves during the procedure
- B. Using a sterile solution
- C. Irrigating from the inner to the outer canthus
- D. Positioning the client's head properly
Correct answer: A
Rationale: The highest priority during an eye irrigation for a client exposed to smoke and ash is wearing gloves during the procedure. This action is crucial as it helps prevent contamination and protects both the client and the nurse. Using a sterile solution is important but not as critical as ensuring the nurse's safety by wearing gloves. Irrigating from the inner to the outer canthus and positioning the client's head properly are essential steps in eye irrigation, but they are not the highest priority in this scenario compared to ensuring infection control by wearing gloves.
3. The client is receiving discharge instructions for warfarin (Coumadin). Which statement by the client indicates a need for further teaching?
- A. I will avoid eating foods high in vitamin K.
- B. I will have my blood tested regularly to monitor my INR levels.
- C. I will take the medication at the same time every day.
- D. I will use a soft toothbrush to prevent bleeding gums.
Correct answer: A
Rationale: The correct answer is A. Clients taking warfarin need to be consistent with their vitamin K intake to maintain a balance in blood clotting. Avoiding foods high in vitamin K is essential as they can interfere with the medication's effectiveness. Choices B, C, and D are all correct statements regarding warfarin therapy. Regular blood testing to monitor INR levels ensures the medication is working effectively, taking the medication at the same time daily maintains a consistent level in the bloodstream, and using a soft toothbrush helps prevent gum bleeding due to warfarin's anticoagulant effects.
4. A client with type 2 diabetes mellitus is receiving metformin (Glucophage). Which laboratory test should the LPN/LVN monitor while the client is taking this medication?
- A. Complete blood count (CBC)
- B. Liver function tests
- C. Serum electrolytes
- D. Renal function tests
Correct answer: B
Rationale: The correct answer is B: Liver function tests. While a client is taking metformin, monitoring liver function tests is crucial to assess for potential hepatic side effects. Metformin is primarily eliminated by the liver, and monitoring liver function tests helps in early detection of any liver-related complications. Choices A, C, and D are incorrect. A complete blood count (CBC) is not specifically required for monitoring metformin therapy. Serum electrolytes are not directly impacted by metformin, making it less relevant for monitoring this medication. Renal function tests are important for some other diabetes medications, but in the case of metformin, liver function tests take precedence due to its hepatic metabolism.
5. A client in the emergency department is being cared for by a nurse and has abdominal trauma. Which of the following assessment findings should the nurse identify as an indication of hypovolemic shock?
- A. Tachycardia
- B. Elevated blood pressure
- C. Warm, dry skin
- D. Decreased respiratory rate
Correct answer: A
Rationale: Tachycardia is a hallmark sign of hypovolemic shock. When a client experiences significant blood loss, the body compensates by increasing the heart rate to maintain adequate perfusion to vital organs. Elevated blood pressure is not typically seen in hypovolemic shock; instead, hypotension is a more common finding. Warm, dry skin is characteristic of neurogenic shock, not hypovolemic shock. Decreased respiratory rate is not a typical manifestation of hypovolemic shock, as the body usually tries to increase respiratory effort to improve oxygenation in response to hypovolemia.
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