HESI LPN
HESI CAT Exam Test Bank
1. A client with myasthenia gravis (MG) is receiving immunosuppressive therapy. Review of recent laboratory test results shows that the client’s serum magnesium level has decreased below the normal range. In addition to contacting the healthcare provider, what nursing action is most important?
- A. Check the visual difficulties
- B. Note the most recent hemoglobin level
- C. Assess for hand and joint pain
- D. Observe rhythm on telemetry monitor
Correct answer: D
Rationale: The correct answer is to observe the rhythm on the telemetry monitor. Decreased magnesium levels can lead to cardiac issues, such as arrhythmias. Monitoring the heart rhythm is crucial in this situation. Checking visual difficulties (choice A) is not directly related to the potential cardiac effects of low magnesium levels. Noting the hemoglobin level (choice B) and assessing for hand and joint pain (choice C) are not the priority when dealing with low magnesium levels and possible cardiac complications.
2. A client is admitted with severe dehydration. What is the most important assessment finding for the nurse to monitor?
- A. Changes in mental status
- B. Urine output and color
- C. Blood pressure and heart rate
- D. Skin turgor
Correct answer: A
Rationale: Changes in mental status are crucial to monitor in a client with severe dehydration. Altered mental status, such as confusion or lethargy, can indicate severe dehydration and potential complications like electrolyte imbalances affecting the brain. Monitoring urine output and color (choice B) is essential but may not provide immediate signs of severe dehydration. While monitoring blood pressure and heart rate (choice C) is important, changes in mental status take precedence as they can indicate more critical conditions. Skin turgor (choice D) is a valuable assessment for dehydration, but changes in mental status take priority due to their direct correlation with severe dehydration.
3. When lactulose (Cephulac) 30 ml QID is prescribed for a male client with advanced cirrhosis, and he complains that it causes diarrhea, what action should the nurse take in response to the client’s statement?
- A. Explain that diarrhea is expected, but the drug reduces ammonia levels
- B. Document that the client is non-compliant with his treatment plan
- C. Tell the client to be concerned about more significant side effects of this drug
- D. Obtain a prescription for loperamide (Imodium) 4mg PO PRN diarrhea
Correct answer: A
Rationale: The correct answer is A. Diarrhea is an expected side effect of lactulose when used to reduce ammonia levels in cirrhosis. It helps in decreasing the absorption of ammonia in the colon, thereby reducing its levels in the blood. Option B is incorrect because it is essential for the nurse to educate the client about the expected side effects of the medication rather than assuming non-compliance. Option C is incorrect as it instills unnecessary fear in the client by suggesting more significant side effects without addressing the current concern. Option D is incorrect as loperamide should not be given automatically for diarrhea caused by lactulose, as the diarrhea is a therapeutic effect of the medication in this context.
4. The mother of a school-age child calls the school to ask when her daughter can return to school after treatment for Pediculosis capitis. What is the nurse’s best response?
- A. When all live lice are eliminated by the treatment
- B. Two weeks after the last treatment
- C. As soon as the itching stops
- D. After the treatment kills all the live lice
Correct answer: D
Rationale: The correct answer is 'After the treatment kills all the live lice.' The child can return to school once all live lice are eliminated to prevent the spread of Pediculosis capitis. This is essential as live lice are highly contagious. Choices A, B, and C are incorrect. Waiting for the itching to stop or for an epidemic to subside does not ensure that all live lice are eradicated, which is crucial to prevent reinfestation and transmission.
5. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
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