A nurse is caring for a 4-year-old child who has dehydration. Which of the following findings should the nurse identify as the priority?

A. Sodium 142 mEq/L: This is within the normal range for sodium (135-145 mEq/L) and does not indicate a problem that needs immediate attention. B. Urine specific gravity 1.025: This value is on the higher end of the normal range for urine specific gravity (1.010-1.030) and indicates concentration of urine, which can occur in mild dehydration. It is not critical but indicates the need for monitoring. C. Potassium 2.5 mEq/L: This is below the normal range for potassium (3.5-5.0 mEq/L) and indicates hypokalemia, which can cause serious cardiac issues and muscle weakness. It is a priority to correct this imbalance to prevent complications. D. Blood glucose 110 mg/dL: This is within the normal range for blood glucose levels (70-110 mg/dL) for children and does not indicate an immediate concern related to dehydration.