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Brain death is used as an indicator of legal death in many jurisdictions, [6] but it is defined inconsistently and often confused by the public. [7] Various parts of the brain may keep functioning when others do not anymore, and the term "brain death" has been used to refer to various combinations.
The certification applies to somatic death, corresponding to death of the person, which has varying definitions but most commonly describes a lack of vital signs and brain function. [9] Death at the level of cells, called molecular death or cell death , follows a matter of hours later. [ 10 ]
The phenomenon has been observed to occur several minutes after the removal of medical ventilators used to pump air in and out of brain-dead patients. [4] It also occurs during testing for apnea—that is, suspension of external breathing and motion of the lung muscles—which is one of the criteria for determining brain death used for example by the American Academy of Neurology.
It occurs with death, and there’s a brain marker that we’ve identified. These electrical signals are not being produced as a trick of a dying brain, which is what a lot of critics have said ...
Researchers studying the brain’s final moments have gained new insight into the “wave of death” that occurs before a brain’s activity fully flatlines. When neural activity stops, it doesn ...
Brain herniation is associated with hyperventilation, extensor rigidity, pupillary asymmetry, pyramidal signs, coma and death. [10] Hemorrhage into the basal ganglia or thalamus causes contralateral hemiplegia due to damage to the internal capsule. [7] Other possible symptoms include gaze palsies or hemisensory loss. [7]
Brain death can occur within five minutes of hypoxia. “We’re not talking about a long period of time here,” said Levine. There are also no hard rules for how asphyxiation may affect one ...
Brain death is sometimes used as a legal definition of death. [15] For all organisms with a brain, death can instead be focused on this organ. [16] [17] The cause of death is usually considered important and an autopsy can be done. There are many causes, from accidents to diseases.