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 is not correct since the picture depicted has uterine tissues deposited in other regions other than the uterus.
Choice B rationale: Endometriosis is a condition where tissue similar to the endometrium (the lining of the uterus) grows outside the uterus, such as on the ovaries, fallopian tubes, pelvic wall, or bowel. This tissue responds to hormonal changes and bleeds during the menstrual cycle, causing inflammation, pain, and sometimes infertility.
Choice C rationale: Leiomyomas, also known as fibroids, are benign tumors that develop from the smooth muscle cells of the uterus. They can vary in size, number, and location within or outside the uterus. They can cause symptoms such as heavy bleeding, pelvic pressure, pain, and infertility.
Choice D rationale: Adenomyosis is a condition where endometrial-like tissue grows within the muscular wall of the uterus (the myometrium). This tissue also bleeds during the menstrual cycle, causing the uterus to enlarge and become painful and heavy .
Correct Answer is D
Explanation
Choice A rationale: This is not relevant to the current condition of the patient and does not support a diagnosis of renal calculi.
Choice B rationale: This is a sign of upper gastrointestinal bleeding, which can have many causes such as peptic ulcer, gastritis or esophageal varices. It is not related to renal calculi or urinary tract problems.
Choice C rationale: Renal calculi usually causes pain which usually radiates anteriorly to the lower abdomen, groin, labia, testicles or the perineum depending on the location of the stone.
Choice D rationale: This is a sign of hematuria, which is blood in the urine caused by the passage of renal calculi (kidney stones) through the urinary tract. Hematuria can also cause the urine to appear dark or brown in color.
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