A client with chronic syndrome of inappropriate antidiuretic hormone (SIADH) reports to the nurse of being constantly thirsty. Which action should the nurse take?

Provide the client with additional oral fluids of her preference.

Measure the client's capillary glucose reading at regular intervals.

Encourage the client to use hard candy frequently to help relieve thirst.

Withhold the next diuretic dose until contacting the healthcare provider.