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?

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. Incorrect. Calcium-based phosphate binders should not be taken with milk or calcium-rich foods, as this can lead to an excessive calcium load and increase the risk of hypercalcemia.

B. Incorrect. Calcium-based phosphate binders are most effective when taken with meals to bind to dietary phosphorus.

C. Incorrect. While vitamin D plays a role in calcium metabolism, its supplementation is not directly related to the use of calcium-based phosphate binders.

D. Correct. Constipation is a common side effect of calcium-based phosphate binders. Increasing fluid intake can help alleviate constipation and promote bowel regularity.

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