In chronic kidney disease, which statement about protein and electrolytes is correct?

• A. Potassium and phosphorus are unimportant and protein should be increased in all stages
• B. Protein should be increased in all CKD
• C. Electrolyte management depends on stage; protein may be restricted in advanced CKD to reduce uremia; requires medical supervision
• D. No medical supervision is needed

Answer: (C)

The key idea is that diet in chronic kidney disease must be tailored to how advanced the disease is, because the kidneys’ ability to handle minerals and waste changes with progression. Electrolyte management, especially potassium and phosphorus, depends on the stage: early on you may maintain a more liberal protein level while monitoring electrolytes, but as kidney function declines, restricting these minerals becomes more important to prevent dangerous elevations. Protein intake also follows a stage-dependent plan. In advanced CKD, limiting protein can help reduce uremic toxins and nitrogen waste, but it must be done under medical supervision to protect overall nutrition. This supervision is essential because dietary changes must balance reducing waste and minerals with ensuring adequate caloric and protein nutrition, and because dialysis status later alters protein needs. The statement captures that electrolyte management is not one-size-fits-all and that protein restriction may be appropriate in advanced CKD under professional guidance.