A 67-year old man arrived at the hospital and he claimed to…

A 67-year old man arrived at the hospital and he claimed to have gotten lost in the elevator.  Staff noticed he appeared uncoordinated and confused and had trouble expressing himself.  A carotid sonogram demonstrated PSV was documented at 607 cm/s and EDV at 195 cm/s in the left CCA. After three days, the patient’s symptoms completely resolved.  What do these findings suggest?