... low voltage brain activity. Can this be caused by the diprivan? He is in ICU due to motorbike vs car injury with multiple bleeds in the brain. We have been given poor prognosis. He does breath above vent when turned down, he has bisk pupil respose, ICP ranging from 10-28, HR WNL, B/P stable. Temp 100-103. Renal adequate. Positive gag reflex but when off of Propofol has no response to pain, no corneal response.