You have been called to a residence of a diabetic patient who is confused. A family member states she could not reach the patient by telephone, so she came over and found the patient awake but confused. The patient can remember his name and address, but cannot remember the day or year. He refuses to go to the hospital, but consents to an assessment. Of the following physical exam findings, which

one is MOST concerning?

A) Blood glucose level of 77 mg/dL
B) Bruise to the left temple
C) Heart rate of 62 beats per minute
D) SpO2 at 96 percent

B