Review Question - QID 109673

A 23-year-old man presents to the emergency department after being brought in by police. He was found shouting at strangers in the middle of the street. The patient has no significant past medical history and his only medications include a short course of prednisone recently prescribed for poison ivy exposure. His temperature is 77°F (25°C), blood pressure is 90/50 mmHg, pulse is 90/min, respirations are 17/min, and oxygen saturation is 98% on room air. The patient is only wearing underwear and he is occasionally mumbling angrily about the government. He appears to be responding to internal stimuli, and it is difficult to obtain a history from him. Which of the following is the most appropriate next step in management?