A client with recurrent kidney stones is prescribed thiazide diuretics. The nurse should recognize that these medications help prevent stone formation by:

A. This statement is not correct. Increasing dairy product intake may provide calcium, which is important for overall health, but it is not a specific dietary modification to prevent struvite stones.

B. This is the correct answer. Struvite stones are composed of magnesium, ammonium, and phosphate. Limiting the intake of high-phosphorus foods can help prevent the formation of these stones.

C. Avoiding foods high in purines is more relevant to the prevention of uric acid stones, not struvite stones.

D. Limiting fluid intake is

not recommended for the prevention of struvite stones. Adequate fluid intake is essential in preventing stone formation.

A. Thiazide diuretics do not directly increase the excretion of uric acid. They are primarily used to reduce calcium excretion and prevent the formation of calcium-based stones.

B. This is the correct answer. Thiazide diuretics help reduce the excretion of calcium in the urine, which can be beneficial in preventing the formation of certain types of kidney stones, particularly calcium oxalate stones.

C. Thiazide diuretics do not directly increase the pH of the urine. They primarily reduce calcium excretion.

D. Thiazide diuretics do not dissolve existing kidney stones. They are used to prevent stone formation, not to treat existing stones.