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An 82 y/o F presents to the emergency department with confusion x 24 hours. She is from home and lives with her daughter and husband. Her past medical history is only significant for Hypertension for which she is on Amlodipine and Diabetes for which she is on Metformin. She does not drink alcohol At baseline she is functionally independent apart from ambulating with a walker. Today she has been agitated, confused, and seems to be hallucinating intermittently. Her vitals at triage are T 37.4 HR 82 BP 162/74 SpO2 99%. Bloodwork including CBC, electrolytes, glucose, renal function, troponin, and extended electrolytes is normal. Her urinalysis shows 1+ leuks and is otherwise negative. The ECG shows sinus rhythm with a RBBB which is unchanged from previous. Which of the following is the MOST appropriate next step?