A close friend age 44 had a massive stroke, lots of blood and fluid pooled in and around the brain. Removed part of his skull to relieve pressure. He didn't take blood pressure meds for a year. He is still in a coma (2wks). Only induced for a week due to brain seizures. Now breathing on his own after 2 weeks on ventilator off and on. Temp and BP issues but pretty stable now. Eyes fixed and dilated still. Little bit of movement in his feet and legs. They say his brain is ok and won't know the extent of injury until he wakes up. What cld this time span be and what damage could this cause if prolonged in coma?