Review Question - QID 213613

A 22-year-old woman is brought to the emergency department by her family. They state that over the past year they have noticed her losing weight. Recently, they caught her throwing her dinner away when she thought she was not being observed. The patient’s hair has been thinning and they notice that she seems weak and fatigued. Her temperature is 97.5°F (36.4°C), blood pressure is 92/62 mmHg, pulse is 60/min, respirations are 15/min, and oxygen saturation is 98% on room air. Physical exam is notable for an emaciated young woman with a BMI of 14 kg/m^2. She has thinning hair and does not make eye contact with the physician. Initial laboratory values are ordered and are currently pending. An ECG is performed as seen in Figure A. Which of the following is the most appropriate initial management of this patient?