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Brain Death
Brain death is the permanent, irreversible, and complete loss of brain function which may include cessation of involuntary activity necessary to sustain life. It differs from persistent vegetative state, in which the person is alive and some autonomic functions remain. It is also distinct from comas as long as some brain and bodily activity and function remain, and it is also not the same as the condition locked-in syndrome. A differential diagnosis can medically distinguish these differing conditions. Brain death is used as an indicator of legal death in many jurisdictions, but it is defined inconsistently and often confused by the public. 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. For example, although one major medical dictionary considers "brain death" to be synonymous with "cerebral death" (death of the cerebrum), the US National Library of Medicine Medical Subject ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brain Activity
Electroencephalography (EEG) is a method to record an electrogram of the spontaneous electrical activity of the brain. The biosignals detected by EEG have been shown to represent the postsynaptic potentials of pyramidal neurons in the neocortex and allocortex. It is typically non-invasive, with the EEG electrodes placed along the scalp (commonly called "scalp EEG") using the International 10-20 system, or variations of it. Electrocorticography, involving surgical placement of electrodes, is sometimes called " intracranial EEG". Clinical interpretation of EEG recordings is most often performed by visual inspection of the tracing or quantitative EEG analysis. Voltage fluctuations measured by the EEG bioamplifier and electrodes allow the evaluation of normal brain activity. As the electrical activity monitored by EEG originates in neurons in the underlying brain tissue, the recordings made by the electrodes on the surface of the scalp vary in accordance with their orientation and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Death
Death is the irreversible cessation of all biological functions that sustain an organism. For organisms with a brain, death can also be defined as the irreversible cessation of functioning of the whole brain, including brainstem, and brain death is sometimes used as a legal definition of death. The remains of a former organism normally begin to decompose shortly after death. Death is an inevitable process that eventually occurs in almost all organisms. Death is generally applied to whole organisms; the similar process seen in individual components of an organism, such as cells or tissues, is necrosis. Something that is not considered an organism, such as a virus, can be physically destroyed but is not said to die. As of the early 21st century, over 150,000 humans die each day, with ageing being by far the most common cause of death. Many cultures and religions have the idea of an afterlife, and also may hold the idea of judgement of good and bad deeds in one's life ( h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uniform Determination Of Death Act
The Uniform Determination of Death Act (UDDA) is a model state law that was approved for the United States in 1981 by the National Conference of Commissioners on Uniform State Laws, in cooperation with the American Medical Association, the American Bar Association, and the President's Commission for the Study of Ethical Problems in Medicine and Biomedical and Behavioral Research. The act has since been adopted by most US states and is intended "to provide a comprehensive and medically sound basis for determining death in all situations". Brain death is a different condition than persistent vegetative state. Due to better seat belt use, bicycle helmets, and the general decrease in violent crime, there are lower numbers of brain deaths now than historically. Donation after cardiac death (DCD) is a new protocol applied when there is severe neurologic injury but the patient does not meet the criteria for brain death. The three sections of the Act proposed for enactment read as follows ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karen Ann Quinlan Case
''In re Quinlan'' (70 N.J. 10, 355 A.2d 647 (NJ 1976)) was a landmark 1975 court case in the United States in which the parents of a woman who was kept alive by artificial means were allowed to order her removal from artificial ventilation. Karen Ann Quinlan Karen Ann Quinlan was 21 years old in 1975. After a night of drinking alcohol and ingesting tranquilizers, Quinlan passed out and ceased breathing for two 15-minute periods. After it was determined that she was in a persistent vegetative state, her father, Joseph Quinlan, wished to remove her from the medical ventilator. Quinlan's primary physician and the hospital both refused. Legal case Quinlan's father retained attorneys Paul W. Armstrong, a Morris County, New Jersey, Legal Aid attorney, and James M. Crowley, an associate at the New York City law firm of Shearman & Sterling with degrees in theology and Church law, and filed suit in the New Jersey Superior Court in Morris County, New Jersey, on September 12, 1975, to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
