A nurse is phoning a provider to report a client's serum potassium of 6.2 mEq/L (3.5-5 mEq/L). Which of the following medications should the nurse expect the provider to prescribe?
Sodium polystyrene sulfonate (Kayexolate)
Lactulose
Acetylcysteine
Potassium iodide
The Correct Answer is A
A. Sodium polystyrene sulfonate (Kayexalate): This medication is used to treat hyperkalemia (high potassium levels) by exchanging sodium ions for potassium ions in the intestines, which helps lower potassium levels. The client’s potassium level is dangerously high at 6.2 mEq/L, so this is the most appropriate treatment.
B. Lactulose: Lactulose is used to treat hyperammonemia in liver failure or constipation. It has no role in managing elevated potassium levels.
C. Acetylcysteine: Acetylcysteine is used to treat acetaminophen overdose or as a mucolytic. It is not indicated for hyperkalemia.
D. Potassium iodide: Potassium iodide is used to protect the thyroid from radiation exposure or to treat certain types of thyroid conditions, not for hyperkalemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["300"]
Explanation
Calculation:
Calculate the duration: From 0330 to 0600 is 2.5 hours.
Multiply the rate by the time:
120mL/hr×2.5hours=300mL.
Correct Answer is C
Explanation
A. Have the laboratory draw a blood sample for an erythrocyte sedimentation rate (ESR): ESR measures inflammation and is unrelated to hyperkalemia.
B. Restrict fluid intake: Fluid restriction is not appropriate for hyperkalemia unless specifically related to fluid overload or renal failure.
C. Obtain a 12-lead ECG: Hyperkalemia can cause life-threatening cardiac dysrhythmias such as peaked T waves, widened QRS complexes, or asystole. ECG monitoring is essential.
D. Administer potassium gluconate 40 mEq orally: This would worsen hyperkalemia and is contraindicated.
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