A nurse is caring for a client with chronic renal failure who is prescribed phosphate binders. What is the rationale for administering phosphate binders to this client?
To reduce calcium absorption and prevent kidney stone formation.
To decrease phosphate levels and prevent hyperphosphatemia.
To improve iron absorption and manage anemia.
To increase potassium excretion and prevent hyperkalemia.
The Correct Answer is B
A. Incorrect. Phosphate binders are not used to reduce calcium absorption. They are specifically prescribed to control phosphate levels in the blood.
B. Correct. Phosphate binders are medications that bind to dietary phosphorus in the digestive tract, preventing its absorption and reducing phosphate levels in the blood. This helps manage hyperphosphatemia, a common complication in chronic renal failure.
C. Incorrect. Phosphate binders do not improve iron absorption or manage anemia. They are not related to iron metabolism.
D. Incorrect. Phosphate binders do not affect potassium excretion. They are specific to phosphate control in the body and do not impact potassium levels.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
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.
Correct Answer is D
Explanation
A. Incorrect. Smoking and tobacco use are harmful to the kidneys and can increase the risk of chronic renal failure.
B. Incorrect. While genetic factors may play a role in some cases of chronic renal failure, lifestyle changes can significantly impact the risk and progression of kidney disease.
C. Incorrect. While a history of kidney stones may be associated with an increased risk of kidney damage, it is not a primary risk factor for chronic renal failure.
D. Correct. Conditions such as hypertension and diabetes are two of the leading causes of chronic renal failure. Uncontrolled high blood pressure and elevated blood sugar levels can damage the blood vessels and filtering units of the kidneys, leading to chronic kidney disease over time.
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