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 A
Explanation
Choice A rationale: The frontal lobe, specifically Broca's area located in the dominant hemisphere, is responsible for expressive speech. Damage to this area can result in expressive aphasia or difficulty expressing speech.
Choice B rationale: The occipital lobe primarily processes visual information.
Choice C rationale: The temporal lobe is involved in auditory processing and language comprehension.
Choice D rationale: The parietal lobe is involved in spatial perception, attention, and sensory information processing.
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Correct Answer is D
Explanation
Choice A rationale: Fluoxymesterone is a synthetic forms of testosterone that can worsen BPH by increasing the level of DHT.
Choice B rationale: Danazol is a synthetic forms of testosterone that can worsen BPH by increasing the level of DHT.
Choice C rationale: Methyltestosterone is a synthetic forms of testosterone that can worsen BPH by increasing the level of DHT.
Choice D rationale: Finasteride is a medication that inhibits the conversion of testosterone to dihydrotestosterone (DHT), which is a hormone that stimulates the growth of the prostate gland. By reducing the level of DHT, finasteride can shrink the enlarged prostate and improve urinary symptoms in men with benign prostatic hyperplasia (BPH). The other choices are not appropriate for BPH.
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