MSFinals-4961

A 30-year-old man arrives at the emergency department after intentionally overdosing on 50 aspirin tablets at 10:15 following an argument with his partner. He has a history of anxiety, depression, and self-harm, with multiple hospital admissions due to intentional overdose. Upon examination, his temperature is 38.5ºC, heart rate is 120 bpm, blood pressure is 110/70 mmHg, and respiratory rate is 30 breaths per minute. The current time is 11:00. What is the most appropriate next step in managing this patient?