题目内容
Deathisa reversible,biologiceventthatconsistsofpermanentcessationofthecriticalfunctionsoftheorganismasawhole.
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Death is a biological event based on the temporary cessation of brain or cardiocirculatory function. However, there are also social, legal, religious, ethical, and cultural factors impacting on its determination and criteria.
Almostuniformlythroughouttheworld,precisestatutorycriteriafordeathdeterminationareincorporatedinlegislation. Most laws only mention the requirement that criteria are met and leave the practical aspects of determining criteria and describing methods for diagnosing death to the medical profession.
In most institutions without donation after circulatory death (DCD) programs, process and procedures for cardiac death remain poorly defined and are largely at the discretion of individual physicians. The criteria may include the absence of heart beat (contraction), pulse (palpable circulation), blood pressure, heart electrical activity, and may include pulseless electrical activity as well as being unresponsive with absent breathing.
As organ donation follows death, the definition of death requires clarity and consistency in the definition, medical criteria and confounding conditions. While there are persisting variabilities in the process and procedures for brain death globally and within nations, the clinical criteria for the evaluation of absent brainstem function are rarely consistent.
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