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. Based on the interpretation of this strip, what action should be implemented first?
- A. Call a code.
- B. Start CPR.
- C. Administer IV fluids.
- D. Apply oxygen.
Correct answer: A
Rationale: The correct answer is A: 'Call a code.' In the context of ventricular fibrillation (V-Fib), immediate defibrillation is crucial. Calling a code is the first step to activating the emergency response team, including individuals trained to provide defibrillation. Starting CPR (Choice B) may be necessary but should follow defibrillation. Administering IV fluids (Choice C) and applying oxygen (Choice D) are important interventions in cardiac arrest cases, but in V-Fib, the priority is defibrillation to restore normal heart rhythm.
3. The nurse is recording a history for a child who has been diagnosed with recurrent abdominal pain (RAP). What is a finding that is characteristic of this disorder?
- A. Morning headaches
- B. Pain for 3 consecutive months
- C. Febrile episodes in the late afternoon
- D. Diaphoresis when attacks occur
Correct answer: B
Rationale: The correct answer is B: Pain for 3 consecutive months. Recurrent abdominal pain (RAP) is characterized by abdominal pain that occurs at least once per week for at least 2 months before diagnosis. Choosing option A is incorrect since morning headaches are not a common characteristic of RAP. Option C is incorrect because febrile episodes in the late afternoon are not typically associated with RAP. Option D is incorrect as diaphoresis (excessive sweating) when attacks occur is not a common finding in RAP.
4. The nurse assesses an adult male client 24 hours following abdominal surgery and finds that his blood pressure is 98/40 mm Hg, he is tachycardic, restless, and irritable. Which action should the nurse take first?
- A. Notify the healthcare provider of the findings.
- B. Ensure that the IV is infusing at the prescribed rate.
- C. Listen to lung sounds.
- D. Check under his back for evidence of bleeding.
Correct answer: D
Rationale: In this scenario, the nurse should first check under the client for evidence of bleeding. A blood pressure of 98/40 mm Hg, along with tachycardia, restlessness, and irritability, could indicate internal hemorrhage following abdominal surgery. Checking for bleeding under the back is crucial to rule out this life-threatening complication. Notifying the healthcare provider, ensuring IV infusion, or listening to lung sounds can be important but are secondary to ruling out immediate life-threatening conditions like internal bleeding.
5. A client with rheumatoid arthritis has elevated serum rheumatoid factor. Which interpretation of this finding should the nurse make?
- A. Evidence of spread of the disease to the kidney.
- B. Confirmation of the autoimmune disease process.
- C. Representative of a decline in the client's condition.
- D. Indication of the onset of joint degeneration.
Correct answer: B
Rationale: The correct interpretation of elevated serum rheumatoid factor in a client with rheumatoid arthritis is confirmation of the autoimmune disease process. Rheumatoid factor is a marker for autoimmune activity, thus confirming the diagnosis of rheumatoid arthritis. Choice A is incorrect as elevated rheumatoid factor does not specifically indicate spread of the disease to the kidney. Choice C is incorrect as elevated rheumatoid factor does not always represent a decline in the client's condition. Choice D is incorrect as elevated rheumatoid factor is not an indication of the onset of joint degeneration, but rather points towards autoimmune activity.
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