A nurse is teaching a client with a history of struvite stones about dietary modifications to prevent stone recurrence. Which instruction should the nurse include in the client's plan of care?

A. Fever and chills are more commonly associated with a urinary tract infection, which can sometimes be a complication of kidney stones. However, the severe pain described is more likely related to the presence of the stone itself.

B. This is the correct answer. Blood in the urine, also known as hematuria, is a common symptom of kidney stones. As the stone moves through the urinary tract, it may cause irritation and small blood vessels may be damaged, resulting in blood in the urine.

C. Difficulty starting the urine stream is not a specific symptom of kidney stones. It may be seen in other urinary conditions but is not typically associated with stones.

D. The frequent urge to urinate may be experienced if the stone causes irritation in the bladder, but it is not the most common symptom associated with kidney stones.

A. This statement is not correct. Limiting intake of calcium is not necessary for the prevention of uric acid stones. In fact, low calcium intake can increase the risk of other types of stones.

B. This is the correct answer. Uric acid stones are formed from high levels of uric acid in the urine. Purine-rich foods can contribute to elevated uric acid levels, so avoiding these foods is important in managing uric acid stones.

C. Increasing consumption of oxalate-rich foods like spinach is not relevant to preventing uric acid stones.

D. Reducing fluid intake is not recommended for preventing any type of kidney stone. Adequate fluid intake is essential for kidney health and preventing stone formation.