A patient with a traumatic brain injury is being treated for diabetes insipidus. Which of the following assessment findings would indicate the effectiveness of treatment?
1. urine output increased
2. serum sodium level elevated
3. urine output reduced
4. potassium level decreased
3
Rationale: Treatment for diabetes insipidus includes replacing intravascular volume and providing synthetic antidiuretic hormone. Evidence that a patient is improving would include a decrease in urine output with an increase in specific gravity. An increase in urine output would not be evidence that the patient is improving. An elevated serum sodium level would indicate that treatment is not effective. Potassium level assessment is not indicated in the treatment of a patient with diabetes insipidus.
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