A client is prescribed alpha-blockers as part of the management of renal calculi. The nurse explains that these medications can help with stone passage by:

A. Excessive water intake is not a risk factor for kidney stones. In fact, adequate hydration is encouraged to prevent kidney stone formation.

B. Low dietary calcium intake is not a common risk factor for kidney stones. In some cases, excessive calcium supplementation may be a risk factor, but dietary calcium is generally not a concern.

C. This is the correct answer. Family history, a diet high in protein and salt, and dehydration are common risk factors for kidney stones.

D. Kidney stones are not mostly caused by consuming too many fruits and vegetables. Fruits and vegetables are generally considered beneficial for kidney health.

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.