Brain death occurs when the brain sustains an injury (anoxic, traumatic, or intracranial event) that stops blood flow and oxygen delivery, leading to the cessation of cellular processes in the brain.

“the brain sustains an injury that could be from anoxia from an anoxic event it can be it can be literally from a traumatic event you know a penetrating injury a devastating head trauma it can be from an inner cranial event a bleed or such such that the pressure in the brain and the injury that evolves in the brain increases to a point that blood flow and oxygen delivery to the brain stops and so all the cellular processes that are occurring kind of from literally the skull base up are have have stopped”