In general, if a patient with CNDI has to be deprived of oral fluids because of general anesthesia, dehydration can and should be prevented by giving the necessary amount of water intravenously until the patient regains consciousness and is able to resume taking all the fluids he needs by mouth. If the dental work interferes with drinking, the IV fluids may need to be maintained for longer periods. Therapy to reduce his DI also should be continued to minimize the amount of fluid that must be given intravenously.