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. Incorrect. Administering an antiemetic medication may help relieve nausea, but it is not the priority action in a client with chronic renal failure experiencing anorexia and nausea.

B. Incorrect. Encouraging the client to increase protein intake is not appropriate if they are experiencing anorexia and nausea. Protein intake may need to be adjusted based on the client's symptoms and kidney function.

C. Incorrect. While assessing serum electrolyte levels is important in chronic renal failure, it is not the priority action in this situation. The client's anorexia and nausea require immediate attention.

D. Correct. Monitoring the client's weight and fluid intake is the priority action when the client is experiencing anorexia and nausea. These symptoms may indicate fluid and electrolyte imbalances that need to be addressed promptly.

A. Incorrect. Proteinuria, or the presence of excessive protein in the urine, may be a symptom of kidney dysfunction, but it is not directly related to periorbital edema and swelling of the ankles and feet.

B. Incorrect. Hypokalemia, or low potassium levels, may cause muscle weakness and other symptoms but is not associated with the specific edema described.

C. Incorrect. Hypernatremia, or high sodium levels, may lead to symptoms such as thirst and confusion but does not typically cause peripheral edema.

D. Correct. Periorbital edema (swelling around the eyes) and edema in the ankles and feet are classic signs of fluid overload in chronic renal failure. The impaired kidney function in chronic renal failure leads to the retention of fluid and sodium in the body, resulting in edema.