The Nurse Has Just Completed an Infusion of a 1000

The nurse has just completed an infusion of a 1000 mL bolus of 0.9% normal saline in a patient with severe sepsis.One hour later,which laboratory result requires immediate nursing action?

A) Creatinine 1.0 mg/dL
B) Lactate 6 mmol/L
C) Potassium 3.8 mEq/L
D) Sodium 140 mEq/L