Review Question - QID 109942

A 67-year-old man presents to the emergency department for confusion. The patient is a member of a retirement community and was found to have a depressed mental status when compared to his baseline. The patient has a medical history of Alzheimer dementia and diabetes mellitus that is currently well-controlled. His temperature is 103°F (39.4°C), blood pressure is 157/108 mmHg, pulse is 110/min, respirations are 17/min, and oxygen saturation is 98% on room air. Physical exam is notable for a somnolent elderly man who is non-verbal; however, his baseline status is unknown. Musculoskeletal exam of the patient’s lower extremities causes him to recoil in pain. Head and neck exam reveals a decreased range of motion of the patient's neck. Flexion of the neck causes discomfort in the patient. No lymphadenopathy is detected. Basic labs are ordered and a urine sample is collected. Which of the following is the most appropriate next step in management?