Review Question - QID 213758

A 44-year-old homeless man presents to the emergency department with slurring of his speech. He states he is planning on killing himself by jumping off a bridge and wants to come into the hospital. The patient has a history of multiple similar presentations in the past and typically elopes from the hospital the following morning. His temperature is 98.2°F (36.8°C), blood pressure is 107/58 mm Hg, pulse is 80/min, respirations are 7/min, and oxygen saturation is 95% on room air. Physical exam is notable for pinpoint pupils, scars in the antecubital fossa, and urine smell. The patient is observed in the emergency department. The following night, the patient appears more irritable and wants to leave the hospital. He appears tremulous, uncomfortable, and covered in sweat. His temperature is 100°F (37.8°C), blood pressure is 157/98 mm Hg, pulse is 170/min, respirations are 22/min, and oxygen saturation is 98% on room air. The patient appears confused and is restrained. An ICU bed is requested; however, it is expected the patient will be boarding in the emergency department for 24 to 48 additional hours given there is limited intensive care unit availability. Which of the following is the most appropriate management of this patient?