Review Question - QID 108863

A 70-year-old man is brought to the emergency department by his wife for incomprehensible speech. The patient's wife explains that the man was tilling the fields on the family beet farm when she found him collapsed on a pile of freshly picked beets. The patient seemed confused so the wife brought him in promptly, and states it has only been 10 minutes since the patient was found down in the fields. Upon first inspection, you note the man is drooling and his eyes are tearing excessively. A physical exam is deferred due to a confused and combative patient who is speaking clearly yet his sentences do not make any sense. The patient's clothes are removed in the ED. Vital signs are currently being obtained. Which of the following is the best initial step in management?