HESI RN
HESI Fundamentals Practice Exam
1. A client with a diagnosis of hyperkalemia is receiving sodium polystyrene sulfonate (Kayexalate). Which laboratory value should the nurse monitor to evaluate the effectiveness of this medication?
- A. Serum sodium level.
- B. Serum potassium level.
- C. Serum calcium level.
- D. Serum glucose level.
Correct answer: B
Rationale: The correct answer is B: Serum potassium level. Sodium polystyrene sulfonate (Kayexalate) is used to treat hyperkalemia by exchanging sodium ions for potassium ions in the intestines, leading to potassium removal from the body. Monitoring the serum potassium level allows the nurse to assess the effectiveness of this medication in lowering the elevated potassium levels. Serum sodium (A), calcium (C), and glucose (D) levels are not directly impacted by the action of sodium polystyrene sulfonate.
2. The healthcare provider obtains a BP reading of 100/88 in the right arm of a client whose blood pressure is typically 120/60 in the same arm. What action should the healthcare provider implement first?
- A. Use an electronic sphygmomanometer to take the BP every 30 minutes.
- B. Retake the blood pressure in the same arm, deflating the cuff slowly.
- C. Ask another healthcare provider to recheck the blood pressure to compare results.
- D. Obtain another blood pressure cuff and retake the blood pressure.
Correct answer: B
Rationale: The healthcare provider should first retake the blood pressure in the right arm, deflating the cuff slowly, because a low systolic and high diastolic blood pressure measurement is often the result of deflating the cuff too rapidly. Taking the BP in the same arm ensures consistency and accuracy of the measurement.
3. In completing a client's preoperative routine, the nurse finds that the operative permit is not signed. The client begins to ask more questions about the surgical procedure. Which action should the nurse take next?
- A. Witness the client's signature on the permit.
- B. Answer the client's questions about the surgery.
- C. Inform the surgeon that the operative permit is not signed and the client has questions about the surgery.
- D. Reassure the client that the surgeon will answer any questions before the anesthesia is administered.
Correct answer: C
Rationale: The nurse should inform the surgeon promptly that the operative permit is not signed and the client has questions about the surgery. It is crucial for the surgeon to be aware of these issues as it is their responsibility to explain the procedure to the client and ensure that the necessary consent is obtained before proceeding with the surgery. Answering the client's questions directly (choice B) may not be appropriate as the surgeon is the one responsible for providing detailed information about the procedure. Witnessing the client's signature (choice A) is premature since the permit is not signed. Reassuring the client (choice D) is not the most appropriate action at this point; the priority is to involve the surgeon in addressing the unsigned permit and the client's questions.
4. A client with a history of heart failure is admitted with a diagnosis of pulmonary edema. Which intervention should the nurse implement first?
- A. Administer oxygen via non-rebreather mask.
- B. Administer furosemide (Lasix) IV push.
- C. Insert a Foley catheter to monitor urine output.
- D. Position the client in a high Fowler's position.
Correct answer: A
Rationale: Administering oxygen via a non-rebreather mask is the priority intervention for a client with pulmonary edema to improve oxygenation and address respiratory distress. Adequate oxygenation is essential to support vital organ function. Administering furosemide intravenously, inserting a Foley catheter to monitor urine output, and positioning the client in a high Fowler's position are important interventions but are secondary to ensuring optimal oxygenation in this client with pulmonary edema.
5. Following a craniotomy, why did the nurse position the client in low Fowler's position?
- A. To promote comfort.
- B. To promote drainage from the operation site.
- C. To promote thoracic expansion.
- D. To prevent circulatory overload.
Correct answer: B
Rationale: Positioning the client in low Fowler's position after a craniotomy is essential to promote drainage from the operation site. This position helps prevent fluid accumulation, facilitates the removal of excess fluid or blood, and aids in the healing process. Choice A is incorrect because comfort, while important, is not the primary reason for this specific positioning. Choice C is incorrect as thoracic expansion is not the main concern following a craniotomy. Choice D is incorrect as circulatory overload is not typically addressed by positioning in low Fowler's position post-craniotomy.
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