Most organ donors are victims of accidents that cause fatal head injuries.
Car wrecks, in which drivers or passengers aren't wearing seat belts, or gun shot wounds are both common examples. They communicate with emergency room doctors during transport to the hospital. A doctor does special tests to see how much damage has been done to the brain and the body. During these test, the medical team continues advanced life-support treatment. If a patient is in a coma, tests show brain activity and blood flowing through the brain.