Brain stem death is a clinical syndrome defined by the absence of reflexes with pathways through the brain stem - the “stalk” of the brain which connects the spinal cord to the mid-brain, cerebellum and cerebral hemispheres – in a deeply comatose, ventilator-dependent, patient.
Identification of this state carries a very grave prognosis for survival, cessation of heartbeat often occurring within a few days although it may continue for weeks or even months if intensive support is maintained.
In the United Kingdom, the formal diagnosis of brain stem death by the procedure laid down in the official Code of Practice permits the diagnosis and certification of death on the premise that a person is dead when consciousness and the ability to breathe are permanently lost, regardless of continuing life in the body and parts of the brain, and that death of the brain stem alone is sufficient to produce this state.
This concept of brain stem death is also accepted for legal purposes in India and Trinidad & Tobago. Elsewhere in the world the concept upon which the certification of death on neurological grounds is based is that of permanent cessation of all function in all parts of the brain - whole brain death - with which the reductionist United Kingdom concept should not be confused. The United States' President's Council on Bioethics made it clear, in its White Paper of December 2008, that the United Kingdom concept and clinical criteria are not considered sufficient for the diagnosis of death in the United States of America
Read more about Brain Stem Death: Evolution of Diagnostic Criteria, Diagnosis, Prognosis and Management, Criticism
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