My father, 77 years old has undergone craniotomy for left subdural hematoma on 6th April 2016. He was on anti- coagulent drugs due to which the surgery was postponed for five days after the diagnosis. But he is showing no signs of improvement since the surgery. He was having speech problems and recognition was somehow impaired just after the hematoma. The same is continuing even after surgery. He is very restless, not being able to have anything orally and blood pressure is fluctuating. Please help.