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
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
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale: This does not match the peak time of NPH insulin.
Choice B rationale: This does not match the peak time of NPH insulin.
Choice C rationale: This does not match the peak time of NPH insulin.
Choice D rationale: This is because NPH insulin is an intermediate-acting insulin that has an onset of action of 1 to 2 hours, a peak of 6 to 12 hours, and a duration of 18 to 24 hours. Therefore, if Albert is given NPH insulin at 0730, the peak effect will occur between 1330 and 1930, which means that his blood glucose level will be lowest during this time.
Correct Answer is C
Explanation
Choice A rationale: Clients with Graves' disease may have increased sensitivity to light due to ocular manifestations like photophobia, so keeping the room well-lit may can cause eye irritation.
Choice B rationale: Encouraging frequent ambulation and exercise may worsen the symptoms of hyperthyroidism, such as tachycardia, palpitations, and tremors.
Choice C rationale: This is because clients with Graves' disease have an increased
metabolic rate and may experience weight loss, muscle wasting, and fatigue. A high- calorie and high protein diet can help prevent these complications and provide adequate nutrition for the client.
Choice D rationale: Placing extra blankets over the client may increase the body temperature and cause heat intolerance, which is another common symptom of Graves' disease.
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