My dad, age 66 had cobra bite, had cordiac arrest and reviewed and toxic got diluted with three days. He was in Hypoxic Ischaemic encephalopathy state on 5th day of snake bite. 6th day he opened his eyes he is able to sense while pinching. Not able to recoganize people, not responding to order or command , not moving his limbs. please advise how to repair this brain damage. Regards, Umashankar