A patient with small cell carcinoma of the lung is admitted with syndrome of inappropriate antidiuretic hormone (SIADH). The patient’s serum sodium level increases from 120 mEq/L to 125 mEq/L as they respond to treatment. Based on this finding, what intervention should the nurse implement?

Choice A rationale Maintaining the prescribed fluid restriction is crucial in the management of SIADH. Fluid restriction helps to prevent further dilution of sodium in the blood, which can exacerbate the symptoms of SIADH34. Choice B rationale Withholding the next scheduled dose of treatment is not necessarily the appropriate intervention based on the increase in serum sodium level. The treatment plan should be adjusted based on the patient’s overall clinical picture and in consultation with the healthcare provider. Choice C rationale Increasing neurologic checks to every 2 hours is not directly related to the increase in serum sodium level. While neurologic checks are important in monitoring the overall health status of the patient, they are not specifically indicated based on the serum sodium level alone. Choice D rationale Assessing for increasing fluid volume overload is not the appropriate intervention based on the increase in serum sodium level. SIADH is characterized by water retention, not fluid volume overload.