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. A client who has a history of hyperthyroidism was initially admitted with lethargy and confusion. Which additional finding warrants the most immediate action by the nurse?
- A. Facial puffiness and periorbital edema
- B. Hematocrit of 30%
- C. Cold and dry skin
- D. Further decline in LOC
Correct answer: D
Rationale: A further decline in LOC can indicate severe complications and requires immediate attention. This change may signify worsening neurological status, which could lead to life-threatening consequences if not addressed promptly. Choices A, B, and C may also be concerning in a client with a history of hyperthyroidism, but a further decline in LOC takes priority due to its potential for rapid deterioration and the need for urgent intervention.
3. The nurse is caring for a client with a suspected stroke. Which assessment finding is most indicative of a stroke?
- A. Chest pain
- B. Sudden confusion and difficulty speaking
- C. Gradual onset of weakness in the legs
- D. Nausea and vomiting
Correct answer: B
Rationale: The correct answer is B: Sudden confusion and difficulty speaking. These are classic signs of a stroke, indicating a neurological deficit that requires urgent medical attention. Choices A, C, and D are less indicative of a stroke. Chest pain is more commonly associated with cardiac issues, gradual onset of weakness in the legs could be related to other conditions like peripheral neuropathy, and nausea/vomiting may suggest gastrointestinal problems rather than a stroke.
4. The nurse is caring for a client with myasthenia gravis. Which symptom is most important for the nurse to report to the healthcare provider?
- A. Diplopia (double vision)
- B. Difficulty swallowing
- C. Weakness in the legs
- D. Fatigue
Correct answer: B
Rationale: In a client with myasthenia gravis, difficulty swallowing is the most crucial symptom to report to the healthcare provider. This is because it can lead to aspiration, a severe complication in these clients. Diplopia (double vision) and weakness in the legs are common symptoms of myasthenia gravis but are not as immediately dangerous as difficulty swallowing. Fatigue is also a common symptom in myasthenia gravis but does not pose the same risk of aspiration as difficulty swallowing.
5. A client with a history of seizures is prescribed phenytoin. Which side effect should the nurse instruct the client to report?
- A. Drowsiness
- B. Gingival hyperplasia
- C. Weight gain
- D. Blurred vision
Correct answer: B
Rationale: The correct answer is B: Gingival hyperplasia. Phenytoin is known to cause gingival hyperplasia, which is an overgrowth of gum tissue. This side effect is important to report to the healthcare provider because it can lead to oral health problems. Choice A, drowsiness, is a common side effect of many antiepileptic drugs but is not specific to phenytoin. Choice C, weight gain, is not a typical side effect of phenytoin. Choice D, blurred vision, is not a common side effect of phenytoin; it is more commonly associated with other medications.
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