How should dietary potassium be managed in advanced CKD?

• A. Potassium should be unrestricted
• B. Potassium restriction is implemented as CKD progresses or when hyperkalemia is present
• C. Potassium should be increased in advanced CKD
• D. Potassium restriction is only for dialysis patients

Answer: (B)

Managing dietary potassium in advanced CKD centers on the kidneys’ reduced ability to excrete potassium. When kidney function declines, potassium can accumulate in the body, increasing the risk of dangerous high potassium levels (hyperkalemia). Because of this, potassium intake is restricted as CKD progresses or when hyperkalemia is detected.

Unrestricted potassium would allow levels to rise and raise the danger of arrhythmias or other complications. Increasing potassium would directly worsen hyperkalemia. The idea that restriction is only for dialysis patients isn’t correct—non-dialysis patients with advanced CKD can also develop hyperkalemia and benefit from dietary restriction, and many dialysis patients continue to have potassium limits as part of their overall management. In practice, the exact restriction is personalized based on potassium levels, CKD stage, and other factors like medications that affect potassium balance.