Polystyrene sulfonate (Kayexalate) is used in renal failure to:

Reduce serum phosphate levels.

Prevent constipation from sorbitol use.

acts by pulling potassium into the bowels and exchanging it for sodium

acts by adding potassium into the bowels and exchanging it for sodium bicarbonate

Answer and Explanation

The Correct Answer is C

Choice A rationale: Kayexalate is not primarily used for phosphate reduction.

Choice B rationale: Kayexalate can have sorbitol in its formulation, which might cause diarrhea rather than constipation.

Choice C rationale: Kayexalate works as a cation-exchange resin that promotes potassium excretion in the bowels.

Choice D rationale: Kayexalate does not add potassium; it exchanges sodium for potassium in the bowels.

Nursing Test Bank

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Correct Answer is C

Explanation

Choice A rationale: This is a general description of an imaging test, such as an X-ray, ultrasound, or MRI, which can show the structure of the organs but not the mucosal lining.

Choice B rationale: This is a general description of a blood test, which can show signs of infection, inflammation, or anemia, but not the cause of these problems.

Choice C rationale: This exam is called a colonoscopy, which involves inserting a flexible tube with a camera and light into the anus and advancing it through the colon. A colonoscopy can reveal signs of inflammation, ulcers, bleeding, or narrowing of the intestinal wall that are characteristic of Crohn's disease. A biopsy can also be taken during the procedure to confirm the diagnosis.

Choice D rationale: This is a general description of a urine test, which can show signs of kidney problems, urinary tract infections, or dehydration, but not Crohn's disease.

A. 5 units/hour B. 10 units/hour C. 20 units/hour D. 15 units/hour

Correct Answer is A

Explanation

Choice A rationale: The correct answer is 5 units/hour. To calculate the units of insulin per hour, we need to use the following formula: units of insulin per hour = (units of insulin in the bag / volume of the bag) x infusion rate

Plugging in the given values, we get:

units of insulin per hour = (50 / 100) x 10 units of insulin per hour = 0.5 x 10

units of insulin per hour = 5

Therefore, the client is receiving 5 units of insulin every hour.

Choice B rationale: This is incorrect because it assumes that the infusion rate is equal to the units of insulin per hour, which is not true.

Choice C rationale: This is incorrect because it multiplies the units of insulin in the bag by the infusion rate, which is too high.

Choice D rationale: This is incorrect because it adds the units of insulin in the bag and the infusion rate, which is also too high.

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Polystyrene sulfonate (Kayexalate) is used in renal failure to:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Upon physical examination, the nurse detects abdominal tenderness, increased bowel sounds accompanied by signs of borborygmi, abdominal distension, and tympany on percussion. Which diagnostic test will confirm Crohn's disease in the client?

Correct Answer is C

Explanation

A client is receiving 10 mL/hr of a prescribed regular insulin infusion. The label on the bag reads 50 units of regular insulin in 100 mL of 0.9% saline. How many units of insulin is the client receiving every hour? Fill in the blank. Round your answer to the nearest whole number.

Correct Answer is A

Explanation

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