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

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.

A. Limiting fluid intake is not recommended to prevent kidney stones. Adequate hydration is essential to prevent stone formation. Dehydration can lead to a higher concentration of minerals in the urine, increasing the risk of stones.

B. Including more foods high in oxalate is not recommended to prevent kidney stones, especially if the client has a history of calcium oxalate stones. Limiting the intake of oxalate-rich foods is a preventive measure.

C. Avoiding all dairy products is not recommended to prevent kidney stones. In fact, adequate dietary calcium intake from food sources may help reduce the risk of certain types of stones, such as calcium oxalate stones.

D. This is the correct answer. Staying hydrated and drinking plenty of water throughout the day is one of the most effective ways to prevent kidney stones. Adequate hydration helps dilute urine and reduce the concentration of minerals that can lead to stone formation.

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