assessment is the priority for the RN to implement when administering sodium polystyrene sulfonate (Kayexelate) to a patient with Acute Kidney Injury?…

Which assessment is the priority for the RN to implement when administering sodium polystyrene sulfonate (Kayexelate) to a patient with Acute Kidney Injury?
a.       Urine output.
b.       Serum potassium level.
c.       Blood pressure.
d.       Breath sounds.