Which medication should the nurse plan to administer for a client with a serum potassium level of 5.3 mEq/L?

The correct choice involves administering furosemide for a client with a serum potassium level of 5.3 mEq/L. Furosemide is a loop diuretic that increases urine production, leading to the excretion of excess potassium, which can help lower elevated serum potassium levels in conditions such as hyperkalemia.

When potassium levels exceed the normal range, it's critical to take steps to mitigate the potential for serious health consequences, such as cardiac dysrhythmias. Using furosemide in this context allows for the removal of excess potassium through the kidneys, effectively reducing the serum potassium concentration.

Choices like digoxin can complicate this situation, as hyperkalemia can heighten the risk of digoxin toxicity. Spironolactone, on the other hand, is a potassium-sparing diuretic and would not be appropriate for someone with elevated potassium levels since it can lead to further increases in potassium. Amlodipine, which is a calcium channel blocker primarily used for hypertension and angina, does not address potassium levels directly and would not be a therapeutic choice in managing hyperkalemia.

Thus, administering furosemide stands out as the most effective and appropriate intervention for a client with a slightly elevated