<s>[INST] hello sir today my maternal grand father passed away...i want to know if there were any chances of him being saved sir he suffered a heat attack two weeks agao..and went into a coma.. doctors said that oxyygen coulnot reach the brain plz tell me if there is any treatment for this problem [/INST] HIT hank for asking to ChatDoctorI can understand your feeling, but that is not the case as you are thinking because the oxygen reach to the brain with the helps of blood, in case of heart attack the pumping action of heart reduces greatly and that cut down the blood supply and consequently oxygen supply, if the heart pump well then this condition can be avoided, hope this information helps you, have nice day. </s>