HESI LPN
HESI Fundamentals 2023 Test Bank
1. A child weighing 20 kg has a new prescription for cefoxitin at 80 mg/kg/day administered intravenously every 6 hours. How much cefoxitin should be administered with each dose?
- A. 400 mg
- B. 200 mg
- C. 1600 mg
- D. 100 mg
Correct answer: A
Rationale: To determine the amount of cefoxitin to be administered with each dose, first, calculate the total daily dose by multiplying the child's weight (20 kg) by the prescribed dose (80 mg/kg/day): 80 mg/kg/day × 20 kg = 1600 mg/day. Since the medication is administered every 6 hours (4 doses/day), divide the total daily dose by the number of doses: 1600 mg / 4 = 400 mg. Therefore, each dose should be 400 mg. Choice B (200 mg) is incorrect because it is half the calculated dose. Choice C (1600 mg) is incorrect as it represents the total daily dose, not the dose per administration. Choice D (100 mg) is incorrect as it is a quarter of the calculated dose.
2. A client with chronic kidney disease is being assessed. Which laboratory value would be most concerning?
- A. Serum creatinine of 3.0 mg/dL
- B. Blood urea nitrogen (BUN) of 45 mg/dL
- C. Serum potassium of 6.5 mEq/L
- D. Hemoglobin of 10 g/dL
Correct answer: C
Rationale: In a client with chronic kidney disease, an elevated serum potassium level (hyperkalemia) is the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias due to its effect on the electrical conduction system of the heart. Monitoring and managing serum potassium levels are crucial in patients with chronic kidney disease to prevent serious complications. While elevated serum creatinine (Choice A) and Blood Urea Nitrogen (BUN) levels (Choice B) indicate impaired kidney function, hyperkalemia poses an immediate risk of cardiac complications. Hemoglobin levels (Choice D) are typically lower in chronic kidney disease due to decreased erythropoietin production, but they do not present an immediate life-threatening risk like hyperkalemia.
3. The nurse is caring for a client with a tracheostomy who is unable to clear secretions by coughing. What is the most appropriate action for the nurse to take?
- A. Encourage the client to take deep breaths.
- B. Provide humidified oxygen via tracheostomy collar.
- C. Suction the tracheostomy tube as needed.
- D. Change the tracheostomy dressing daily.
Correct answer: C
Rationale: Suctioning the tracheostomy tube as needed is the most appropriate action in this scenario. When a client with a tracheostomy is unable to clear secretions by coughing, suctioning helps remove the excess secretions from the airway, ensuring proper breathing. Encouraging deep breaths (Choice A) may not effectively address the immediate need to clear secretions. Providing humidified oxygen (Choice B) can help with oxygenation but does not directly address the issue of clearing secretions. Changing the tracheostomy dressing daily (Choice D) is important for maintaining cleanliness but is not the priority when the client is unable to clear secretions.
4. A nurse is caring for a client who is postoperative and has signs of hemorrhagic shock. When the nurse notifies the surgeon, he directs her to continue measuring the client's vital signs every 15 minutes and call him back in 1 hour. From a legal perspective, which of the following actions should the nurse take next?
- A. Document the provider's directive in the medical record
- B. Notify the nursing manager
- C. Consult the facility's risk manager
- D. Complete an incident report
Correct answer: B
Rationale: In this scenario, the nurse is facing a critical situation with a client showing signs of hemorrhagic shock. The surgeon's directive of waiting for an hour without providing immediate intervention poses a risk to the client's well-being. The nurse should prioritize the client's safety and advocate for timely and appropriate care. Notifying the nursing manager is the correct action as it activates the chain of command to ensure that the client receives the necessary care promptly. Documenting the provider's directive, consulting the risk manager, or completing an incident report are not the immediate actions needed to address the client's deteriorating condition and ensure patient safety.
5. The client with congestive heart failure (CHF) is receiving furosemide (Lasix). Which laboratory value should the healthcare provider monitor closely?
- A. Potassium
- B. Sodium
- C. Calcium
- D. Magnesium
Correct answer: A
Rationale: Correct! When a client is taking furosemide (Lasix), monitoring potassium levels is crucial due to the potential for hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss through increased urine output. Low potassium levels can predispose the client to cardiac dysrhythmias. Sodium, calcium, and magnesium levels are not typically affected by furosemide to the same extent as potassium, making them less critical to monitor in this scenario.
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