Clinical death is usually defined as the medical state in which it is impossible to revive a person with any technology at medicine's disposal, in essence the complete and irreversible cessation of all body functions. Despite the fact that the body continues to live in cases of brain death, it is also seen as a valid definition of clinical death by almost all medical establishments.
In relation to emergency medical care, clinical death occurs when the patient's heartbeat and breathing have stopped. The reversal of this state is possible through CPR and other treatments.
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