Problem: A 75-year-old man with a history of hypertension and chronic obstructive pulmonary disease is admitted to the hospital with confusion and dysuria over the past two days. The patient begins to see people in his hospital room that are not there and starts to confuse the nursing staff with his own family members. On examination, he is noted to have poor attention and disorganized thinking. His vitals are notable for a temperature of 101.0?. The patient's physical exam is notable for asterixis but otherwise is nonfocal. Which of the following would be the best initial study for diagnosis of this patient's condition? Looking for Assignment Help?
Question options: Lumbar puncture CT scan of head Thyroid-stimulating hormone level Urinalysis