Trying to get through to the Groome Transportation Macon Office on the phone is PURE HELL. I have been the first caller in line for 45 minutes on several occasions. They have 2 other phone numbers but one the mail box is full and the... More
A: Lack of oxygen in the brain will cause permanent brain damage in as little as four minutes. Another four to six minutes without the brain receiving blood will result in increased brain damage, coma and then death.
12 to 15 minutes - irreverseable brain damage intensifies and to heart as well. 15 to 20 minutes - brain damage reaches point to cease brain wave function - death. These times are estimates and can vary based on many factors however the total amount of time to death will not vary by much. Once the oxygen is depleted in the human system, biological death will occur in about 20 minutes. Hope this answers the question.