HESI LPN
Medical Surgical HESI
1. A client is currently receiving an infusion labeled as 5% dextrose injection 500 ml with heparin sodium 25,000 units at 14 mL/hour per pump. A prescription is received to change the rate of the infusion to heparin 1,000 units/hour. How many ml/hour should the nurse program the infusion pump?
- A. 16 ml/hour.
- B. 18 ml/hour.
- C. 20 ml/hour.
- D. 22 ml/hour.
Correct answer: C
Rationale: To deliver 1,000 units/hour from a solution with 25,000 units in 500 ml, the rate should be set to 20 ml/hour. This is calculated by determining that the solution has 50 units/ml (25,000 units / 500 ml = 50 units/ml) and then dividing the required 1,000 units/hour by 50 units/ml, resulting in 20 ml/hour. Therefore, the nurse should program the infusion pump to deliver heparin at 20 ml/hour. Choices A, B, and D are incorrect as they do not align with the calculated rate of 20 ml/hour.
2. The nurse is providing discharge teaching for a client with heart failure. Which instruction should be included to prevent fluid overload?
- A. Weigh yourself daily and report a gain of 2 pounds in 24 hours
- B. Increase fluid intake to stay hydrated
- C. Consume a high-sodium diet to retain fluids
- D. Engage in vigorous exercise daily
Correct answer: A
Rationale: The correct answer is A: 'Weigh yourself daily and report a gain of 2 pounds in 24 hours.' Daily weight monitoring is crucial for detecting fluid retention early in clients with heart failure. Reporting a gain of 2 pounds in 24 hours can indicate fluid overload, prompting timely intervention. Choice B is incorrect because increasing fluid intake can exacerbate fluid overload in clients with heart failure. Choice C is incorrect as a high-sodium diet can worsen fluid retention. Choice D is incorrect as vigorous exercise can strain the heart and worsen heart failure symptoms.
3. Laboratory findings indicate that a client’s serum potassium level is 2.5 mEq/L. What action should the nurse take?
- A. Administer potassium supplements orally.
- B. Increase the client's dietary potassium intake.
- C. Inform the healthcare provider of the need for potassium replacement.
- D. Monitor the client's ECG continuously.
Correct answer: C
Rationale: A serum potassium level of 2.5 mEq/L is critically low, indicating severe hypokalemia. In this situation, it is essential for the nurse to inform the healthcare provider promptly about the need for potassium replacement. Administering potassium supplements orally or increasing dietary potassium intake is not appropriate in cases of critically low potassium levels as immediate and precise replacement is necessary. Monitoring the client's ECG continuously is important in severe cases of hypokalemia, but the priority action should be to inform the healthcare provider for further management and treatment.
4. A young female client with 7 children is having frequent morning headaches, dizziness, and blurred vision. Her BP is 168/104. The client reports that her husband recently lost his job and she is not sleeping well. After administering a STAT dose of an antihypertensive IV med, which intervention is most important for the nurse to implement?
- A. Measure urine output hourly to assess for renal perfusion
- B. Request a prescription for pain medication
- C. Use an automated BP machine to monitor for hypotension
- D. Provide a quiet environment with low lighting
Correct answer: C
Rationale: Using an automated BP machine is crucial to continuously monitor for hypotension after administering an antihypertensive medication. This is essential to prevent a rapid drop in blood pressure that could lead to complications. Measuring urine output hourly to assess for renal perfusion is important but not the most immediate concern in this situation. Requesting pain medication is not relevant to the primary issue of managing blood pressure. Providing a quiet environment with low lighting may be beneficial for the client's overall well-being but is not as critical as monitoring for potential hypotension.
5. What is the most critical initial intervention for a client who is actively seizing?
- A. Restrain the client to prevent injury
- B. Insert an oral airway
- C. Turn the client to the side
- D. Apply soft restraints to the wrists
Correct answer: C
Rationale: The most critical initial intervention for a client who is actively seizing is to turn the client to the side. This action helps maintain an open airway and prevents aspiration during a seizure. Restrain the client to prevent injury (Choice A) is incorrect because restraining a client during a seizure can lead to injury. Inserting an oral airway (Choice B) is not recommended as it can cause injury and is not necessary during an active seizure. Applying soft restraints to the wrists (Choice D) is also not recommended as it can lead to harm and does not address the immediate airway management needed during a seizure.
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