A nurse is educating a client about the common risk factors for chronic renal failure. Which statement made by the client indicates a correct understanding of the risk factors?

A. Incorrect. Applying a heating pad may provide temporary relief for muscle cramps, but it does not address the underlying cause.

B. Correct. Muscle cramps in clients with chronic renal failure can be caused by dehydration and electrolyte imbalances. Encouraging the client to increase fluid intake can help alleviate muscle cramps and maintain adequate hydration.

C. Incorrect. While calcium supplements may be prescribed in certain situations, they are not the first-line intervention for muscle cramps in chronic renal failure.

D. Incorrect. Educating the client about potassium-rich foods is important for managing potassium levels, but it is not the priority in this situation. Muscle cramps are more likely related to fluid and electrolyte imbalances rather than potassium intake.

A. Correct. Increased blood pressure readings can be an early clinical manifestation of fluid overload in clients with chronic renal failure. Fluid retention can lead to hypertension as the kidneys struggle to excrete excess fluids.

B. Incorrect. Hyperkalemia may occur in chronic renal failure, but it is not an early clinical manifestation of fluid overload.

C. Incorrect. Dry and cracked skin is more commonly associated with dehydration rather than fluid overload.

D. Incorrect. Polyuria is not typically associated with fluid overload. Instead, it may be present in early stages of chronic renal failure due to the inability of the kidneys to concentrate urine properly.