A Renal Failure Patient with Severe Hyperkalemia (K⁺ level 7

A renal failure patient with severe hyperkalemia (K⁺ level 7.2 mEq/L) has just been admitted to the nursing unit. Given the severity of this situation, the nurse should be prepared to administer which intravenous infusion stat?

A) Lactated Ringer solution at 150mL/hour to maintain blood glucose levels
B) Regular insulin infusion, rate dependent on lab values
C) Infusion of Solu-Medrol to decrease irritation to the intravascular system
D) Dilaudid via patient-controlled device (PCA) to control pain