Final answer:
The nurse should report a sodium value of 148 mEq/L to the provider.
Step-by-step explanation:
The nurse should report the sodium value of 148 mEq/L to the provider. In end-stage kidney disease, the kidneys are unable to remove excess sodium from the body, leading to hypernatremia. A normal sodium level is 135-145 mEq/L, so a value of 148 mEq/L indicates an elevated sodium level.