A client with chronic renal failure is scheduled for a GFR test. The client asks the nurse if there is anything they need to do to prepare for the test. What is the nurse's best response?

A. Correct. ACE inhibitors are commonly prescribed to manage hypertension and fluid overload in clients with chronic renal failure. These medications help relax blood vessels, reduce fluid retention, and lower blood pressure.

B. Incorrect. Phosphate binders are prescribed to control phosphate levels, but they do not directly address fluid overload and hypertension.

C. Incorrect. Erythropoietin-stimulating agents (ESA. are used to manage anemia in chronic renal failure and do not specifically address hypertension or fluid overload.

D. Incorrect. Potassium-sparing diuretics may not be the first for managing fluid overload and hypertension in chronic renal failure, especially if the client has elevated potassium levels. ACE inhibitors are a more suitable option in this scenario.

QUESTIONS

A. Incorrect. Hyperkalemia, or high potassium levels, can cause muscle weakness and potentially cardiac arrhythmias, but it is not typically associated with difficulty concentrating or irritability.

B. Incorrect. Hyponatremia, or low sodium levels, can cause neurological symptoms such as confusion and headache, but it is not typically associated with muscle cramps.

C. Incorrect. Hypocalcemia, or low calcium levels, can cause muscle cramps and neurological symptoms, but it is not specifically associated with difficulty concentrating and irritability.

D. Correct. Hyperphosphatemia, or high phosphorus levels, is common in chronic renal failure due to impaired kidney function. Elevated phosphorus levels can lead to the binding of calcium, resulting in decreased ionized calcium in the blood. This can cause neuromuscular irritability, difficulty concentrating, and muscle cramps.