During an assessment of an 66-year-old male you note the pre…

During an assessment of an 66-year-old male you note the presence of a diabetic neuropathic ulcer extending from the big toe to the 3rd toe on the bottom of the left foot.  The patient reports, “I can’t feel my feet.  It’s been that way for years.” Which of the following is an anesthetic concern in preparation for induction of anesthesia  in this patient: