Which medication should be adjusted if a patient exhibits elevated potassium levels during treatment?

Which medication should be adjusted if a patient exhibits elevated potassium levels during treatment?

• A. Metoprolol
• B. Atenolol
• C. Spironolactone
• D. Lisino-pril

Answer: (C)

When a patient exhibits elevated potassium levels, the medication that should be adjusted is spironolactone. Spironolactone is a potassium-sparing diuretic, meaning it helps to retain potassium in the body while promoting the excretion of sodium and water. In situations where potassium levels are elevated, continued use of spironolactone can exacerbate hyperkalemia, leading to potentially serious cardiac issues.

In contrast, other medications listed, such as metoprolol and atenolol, are beta-blockers that do not affect potassium levels directly; adjustments to these medications are not usually necessary in response to hyperkalemia. Lisinopril, an ACE inhibitor, can contribute to elevated potassium levels, but it is not a potassium-sparing diuretic like spironolactone. Thus, while care regarding lisinopril use is warranted in a patient with elevated potassium, directly adjusting the dose of spironolactone is essential to manage the hyperkalemia effectively.