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Electroencephalography (EEG) An EEG is used to measure electrical activity in the brain. It is most commonly used when a doctor is concerned that someone has seizures or epilepsy. In brain death, rather than looking for abnormal activity, the EEG is looking for any kind of activity at all.
In collaboration with the American Academy of Pediatrics (AAP), Child Neurology Society (CNS), and Society for Critical Care Medicine (SCCM), the American Academy of Neurology (AAN) formulated an updated, evidence-informed consensus-based guideline for pediatric and adult brain death/death by neurologic criteria (BD/DNC) determination. 1 The ...
Brain death is legally recognized as equivalent to cardiopulmonary death in the United States. Brain death is defined by a strict set of criteria that, once met, confers zero likelihood of awakening from coma. The final common pathway of brain death is shown below.
Many hospitals have intensive care units and perform EEG studies in the setting of clinically suspected cerebral death to confirm irreversible loss of all brain function (Wijdicks et. al. 2010). For this reason, there is continued need for guidance in performing these important tests.
Electroencephalogram (EEG) is often used in the confirmatory test for brain death diagnosis in clinical practice. Because EEG recording and monitoring is relatively safe for the patients in deep coma, it is believed to be valuable for either ...
Brain death is defined as the irreversible loss of all functions of the brain, including the brainstem. The three essential findings in brain death are coma, absence of brainstem reflexes, and apnoea. An evaluation for brain death should be considered in patients who have suffered a massive, irreversible brain injury of identifiable cause.
The role of the EEG in making the determination of brain death is discussed as are suggested technical criteria for making the diagnosis of electrocerebral inactivity. This revision to the EEG Guidelines is an update incorporating current EEG technology and practice.
Depending on where the injury is, an EEG is one test of many to help decide brain death in critically ill patients. An EEG may also be used to monitor blood flow in the brain or neck's blood vessels during surgery.
This article reviews criteria for a brain death diagnosis in adult patients, complicating conditions that must be ruled out, the brain death exam, and various confirmatory tests used to determine brain death.
An EEG also might be used to confirm brain death in someone in a coma. A continuous EEG is used to help find the right level of anesthesia for someone in a medically induced coma. More Information