The nurse is administering sodium polystyrene sulfonate to a client in acute kidney injury (AKI). Which laboratory finding indicates that the medication has been effective?

Glucose [Reference Range: 74 to 106 mg/dL (4.1 to 5.9 mmol/L)]

Hemoglobin (Hgb) [Reference Range:12-16 g/dL (120-160 g/L)]

Potassium (K+) [Reference Range: 3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)]

Ammonia [Reference Range: Adult: 10 to 80 Mcg/dL (6 to 47 Mcmol/dL)]

Serum ammonia level of 30 Mcg/dL (17.62 Mcmol /dL).

Serum potassium level of 3.8 mEq/L (3.8 mmol/L).

Serum glucose level of 120 mg/dL (6.7 mmol/L).

Hemoglobin level of 13.5 g/dL (135 g/L).

Answer and Explanation

The Correct Answer is B

Choice A rationale: Serum ammonia levels are not relevant to the effectiveness of sodium polystyrene sulfonate in treating hyperkalemia.

Choice B rationale: Sodium polystyrene sulfonate is a medication used to treat hyperkalemia (high potassium levels). A serum potassium level of 3.8 mEq/L falls within the normal reference range (3.5 to 5.0 mEq/L), indicating that the medication has been effective in promoting the excretion of potassium and reducing hyperkalemia.

Choice C rationale: Serum glucose levels are not relevant to the effectiveness of sodium polystyrene sulfonate in treating hyperkalemia.

Choice D rationale: Hemoglobin levels are not relevant to the effectiveness of sodium polystyrene sulfonate in treating hyperkalemia.

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Correct Answer is D

Explanation

The correct answer is D.

Choice A rationale: While iodine is essential for thyroid hormone synthesis, it is not relevant to the administration of levothyroxine. The client does not need to consume foods high in iodine specifically for taking levothyroxine.

Choice B rationale: While iron supplements can interfere with the absorption of levothyroxine, this statement does not indicate that the client understands when to take levothyroxine correctly.

Choice C rationale: Levothyroxine should be taken in the morning, not at bedtime, to avoid interference with sleep and to optimize absorption.

Choice D rationale: Levothyroxine, a thyroid hormone replacement, should be taken on an empty stomach, preferably in the morning, at least 30 minutes before eating. Taking it on an empty stomach maximizes its absorption and ensures optimal therapeutic effects.

A. Two hours after completion of the IV dose and two hours before the next administration of the medication. B. One hour after completion of the IV dose and one hour before the next administration of the medication. C. Thirty minutes into the administration of the IV dose and 30 minutes before the next administration of the medication. D. Immediately after completion of the IV dose and 30 minutes before the next administration of the medication. E. None F. None

Correct Answer is B

Explanation

choice A, Drawing the peak level two hours after the IV dose is too late to capture the drug's highest serum concentration. Similarly, drawing the trough two hours before the next dose does not reflect the lowest drug level accurately.
Choice B,Drawing the peak level one hour after completion of the IV dose ensures an accurate measurement of the highest serum concentration, as vancomycin typically peaks within this time frame. Drawing the trough one hour before the next dose ensures the lowest concentration of the drug is measured, providing precise therapeutic monitoring.

Choice C is incorrect because drawing blood 30 minutes into the IV dose would not allow the full dose to circulate and reach peak levels in the bloodstream.

Choice D.Drawing the peak level immediately after the completion of the IV dose is too early, as the drug needs time to distribute in the bloodstream and reach its highest concentration. While drawing the trough 30 minutes before the next dose is appropriate, the incorrect timing of the peak makes this option unsuitable.

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Naxlex Comprehensive Predictor Exams

A client receives a new prescription for levothyroxine. Which statement made by client indicates to the nurse the education was effective?

Correct Answer is D

Explanation

A client is receiving intravenous (IV) vancomycin and the nurse plans to draw blood for a peak and trough to determine the serum level of the drug. Which collection times provide the best determination of these levels?

Correct Answer is B

Explanation

The nurse initiates an infusion of piperacillin-tazobactam for a client with a urinary tract infection. Five minutes into the infusion, the client reports not feeling well. Which client manifestation should the nurse identify as a reason to stop the infusion?

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A nurse is assessing a client's ability to swallow. Which of the following, when selected by the nurse, indicates an understanding of the cranial nerve that tests the ability to swallow?

The nurse is preparing a discharge teaching plan for a client who is taking ciprofloxacin hydrochloride tablets, which were prescribed because of a suspected anthrax exposure. Which instruction(s) should be included in the teaching plan? (Select all that apply.)

After receiving five doses of filgrastim, the nurse notes that the client's white blood cell count has increased from 2,500/mm3 (2.5 x 109/L) to 5,000/mm3 (5 x 10°/L). Which action should the nurse implement? White Blood Cell (WBC) [Reference Range: 5000 to 10,000/mm3 (5 to 10 x 109/L)]

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