The nurse teaches a client with chronic kidney disease to avoid all salt substitutes in his or her diet. Which rationale supports the nurse's instruction?

The nurse teaches a client with chronic kidney disease to avoid all salt substitutes in his or her diet. Which rationale supports the nurse's instruction?

• A. A person's body tends to retain fluid when a salt substitute is included in the diet.
• B. Limiting salt substitutes in the diet prevents a buildup of waste products in the blood.
• C. Salt substitutes contain potassium, which must be limited to prevent abnormal heartbeats.
• D. The salt substitute substances interfere with capillary membrane transfer, resulting in anasarca.

Answer: (C)

In chronic kidney disease, the kidneys can’t effectively excrete potassium, so potassium intake must be limited to prevent dangerous levels in the blood. Salt substitutes are often potassium chloride, which raises serum potassium. When potassium is too high, the heart’s electrical system can be disrupted, leading to abnormal heart rhythms or even life-threatening arrhythmias. That’s why avoiding salt substitutes is a protective measure for the heart in CKD. The other ideas aren’t the primary concern here. Salt substitutes don’t mainly drive fluid retention or edema; edema relates more to sodium and overall fluid balance, which isn’t the core issue with potassium-rich substitutes. Waste product buildup in CKD results from reduced kidney filtration, not from consuming potassium through salt substitutes. And the notion that these substitutes interfere with capillary membranes to cause generalized swelling isn’t accurate.

In chronic kidney disease, the kidneys can’t effectively excrete potassium, so potassium intake must be limited to prevent dangerous levels in the blood. Salt substitutes are often potassium chloride, which raises serum potassium. When potassium is too high, the heart’s electrical system can be disrupted, leading to abnormal heart rhythms or even life-threatening arrhythmias. That’s why avoiding salt substitutes is a protective measure for the heart in CKD.

The other ideas aren’t the primary concern here. Salt substitutes don’t mainly drive fluid retention or edema; edema relates more to sodium and overall fluid balance, which isn’t the core issue with potassium-rich substitutes. Waste product buildup in CKD results from reduced kidney filtration, not from consuming potassium through salt substitutes. And the notion that these substitutes interfere with capillary membranes to cause generalized swelling isn’t accurate.