The nurse is caring for a client who is postoperative following a craniotomy. When writing the plan of care, the nurse identifies a diagnosis of "deficient fluid volume related to fluid restriction and osmotic diuretic use." What is the nurse's most appropriate intervention for this diagnosis?
a. Change the client's position as indicated.
b. Monitor serum electrolytes.
c. Maintain NPO status.
d. Monitor arterial blood gas (ABG) values.
