Brain death is the irreversible and complete cessation of all brain and brain stem function.
It means there is no blood flow through the brain or brain stem and the patient has stopped responding to outside stimuli. It is considered legal death and allows a death certificate to be signed. Brain death is not the same as being in a coma, since coma patients still have brain function and respond to stimuli. When a family is facing the brain death of a loved one, it is important to fully understand what is taking place. Families should direct their questions and concerns regarding brain death and the removal of breathing supports or machines to their loved one's physicians or other healthcare professionals at the hospital.