A client with chronic renal failure asks the nurse about the purpose of the glomerular filtration rate (GFR) test. What is the nurse's best response?

"The GFR test measures the volume of urine produced in 24 hours."

"This test helps assess the client's blood glucose levels."

"The GFR test evaluates how well your kidneys are filtering waste and fluids from the blood."

"It measures the client's ability to excrete potassium and sodium in the urine."

Answer and Explanation

The Correct Answer is C

A. Incorrect. The volume of urine produced in 24 hours is measured through a different test called the 24-hour urine collection, not the GFR test.

B. Incorrect. The GFR test does not assess blood glucose levels; it is primarily used to evaluate kidney function.

C. Correct. The GFR test measures how well the kidneys are filtering waste and fluids from the blood. It is an important indicator of kidney function and is commonly used to stage chronic renal failure.

D. Incorrect. The GFR test does not specifically measure the excretion of potassium and sodium in the urine; instead, it focuses on overall kidney function and filtration rate.

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Correct Answer is D

Explanation

A. Incorrect. Calcitriol is not given to enhance appetite or improve nutrition. Its primary role is in regulating calcium and phosphate levels.

B. Incorrect. Calcitriol does not directly impact urine output or prevent kidney stones.

C. Incorrect. While some medications may be prescribed to manage blood pressure in chronic renal failure, calcitriol is not one of them.

D. Correct. Calcitriol is the active form of vitamin D and plays a crucial role in regulating calcium and phosphate levels in the body. It helps maintain bone health by promoting the absorption of calcium from the digestive tract and preventing bone demineralization.

A. "You need to fast for at least 8 hours before the test." B. "Make sure to drink plenty of water before the test to stay hydrated." C. "Avoid eating red meat and dairy products 24 hours before the test." D. "There are no special preparations needed for the GFR test."

Correct Answer is D

Explanation

A. Incorrect. Fasting is not required for a GFR test.

B. Incorrect. While staying hydrated is essential for overall health, there are no specific hydration requirements before a GFR test.

C. Incorrect. While dietary changes may be necessary for other tests, such as creatinine clearance, there are no specific dietary restrictions for the GFR test.

D. Correct. There are no special preparations needed for a GFR test. The test can be done at any time, regardless of food intake or hydration status.

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A client with chronic renal failure asks the nurse about the purpose of the glomerular filtration rate (GFR) test. What is the nurse's best response?

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Naxlex Comprehensive Predictor Exams

A client with chronic renal failure is prescribed calcitriol (active form of vitamin D. to manage calcium and phosphate levels. The client asks the nurse about the purpose of this medication. How should the nurse respond?

Correct Answer is D

Explanation

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?

Correct Answer is D

Explanation

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