A 50-year-old man a known case of chronic kidney disease and has hemodialysis 2 times weekly. He is brough to the office due to recent muscle weakness. Lab testes show persistently elevated serum potassium level. He takes lisinopril. Blood pressure is 130/90 mm Hg. Physical examination shows no abnormalities. The patient is prescribed patiromer therapy. Which of the following best describes the mechanism of action of this medication?
A) Activates the Na+-K+-ATPase pump in skeletal muscle
B) Antagonizes aldosterone effect on renal tubules
C) Antagonizes membrane effects of hyperkalemia
D) Exchanges calcium for potassium in the intestine
E) Increases renal excretion of potassium
Correct Answer:
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