<prompt> A 45-year-old patient on hemodialysis for one week has noted that his BP is more difficult to control. He repos good compliance with his medications, which include erythropoietin, ferrous sulfate, vancomycin, and vitamin D. His BP is 18099 mm Hg. Most likely cause for the worsening control of his BP isErythropoietinFerrous sulfateVancomycinVitamin D  <response>: The patient most likely has a worsening of his blood pressure due to erythropoietin. This is seen in about 33 of dialysis patients. Vitamin D iron and vancomycin generally do not raise blood pressure. Ref - Harrisons principles of internal medicine 20e pg 386,499,729 