The nurse is completing the admission assessment of an adolescent client who is underweight and admitted to a psychiatric unit with a diagnosis of depression. Which finding requires notification to the healthcare provider? Reference Ranges Potassium (K+) [3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)] White Blood Cell (WBC) [5,000 to 10,000/mm3 (5 to 10 x 109/L)] Body mass index (BMI) [normal 18.0 to 24.9 kg/m3]

A. BMI of 21 kg/m²: This value falls within the normal range of 18.0–24.9 kg/m², indicating that the adolescent’s weight is appropriate for her height. No immediate intervention or notification is needed based on this finding alone. B. Potassium of 2.9 mEq/L (2.9 mmol/L): This value is below the normal reference range of 3.5–5.0 mEq/L, indicating hypokalemia. Low potassium levels can lead to serious cardiac dysrhythmias, muscle weakness, and potentially life-threatening complications, requiring immediate notification to the healthcare provider for correction. C. Blood pressure of 110/70 mm Hg: This blood pressure is within the normal range for an adolescent and does not indicate acute concern. Routine monitoring is sufficient. D. WBC of 10,000/mm³ (10 x 10⁹/L): This value is at the upper limit of the normal range (5,000–10,000/mm³). It does not indicate infection or hematologic abnormality requiring urgent intervention, though continued monitoring is appropriate.