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 D
Explanation
Choice A rationale: This is a possible sign of TBI but is not necessarily indicative of a life- threatening condition.
Choice B rationale: This is a possible sign of TBI but is not necessarily indicative of a life- threatening condition.
Choice C rationale: This is a possible sign of TBI but is not necessarily indicative of a life- threatening condition.
Choice D rationale: Serosanguineous nasal drainage (a mixture of blood and clear fluid) may suggest a basilar skull fracture, which is a fracture of the base of the skull that can damage vital structures such as the brainstem, cranial nerves, or major blood vessels. This can lead to serious complications such as meningitis, cerebrospinal fluid leak, or hemorrhage.
Correct Answer is A
Explanation
Choice A rationale: An allergy to sulfa drugs is important as some diabetes medications, like sulfonylureas, contain components related to sulfa drugs, which could cause an allergic reaction in susceptible individuals.
Choice B rationale: Smoking cessation and lifestyle history are important but might not directly impact initial diabetes treatment options.
Choice C rationale: Numbness in the soles of the feet might indicate neuropathy, a common complication of diabetes, but is not directly related to the choice of initial treatment.
Choice D rationale: While obesity is a risk factor for Type 2 diabetes, it's less critical for immediate treatment decisions compared to drug allergies that could impact medication choices.
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