概念脑死亡是指大脑皮层及脑干功能不可逆的丧失,接着在几天之内心跳停止.脑死亡不是一种特异性的疾病诊断,它是中枢神经系统在代谢或机械性损伤之后发生变性的终末阶段.在本世纪60年代之前,即重症监护病室普遍建立及现代生命支持技术广泛应用于临床之前,并没有脑死亡的诊断.在当时,传统的观念是,心跳及呼吸不可逆的停止即死亡.现在, Conceptual brain death refers to the irreversible loss of function of the cerebral cortex and brainstem followed by a halt of heartbeat within a few days Brain death is not a specific disease diagnosis that is the culmination of a degeneration of the central nervous system following a metabolic or mechanical injury Stage. Before the 1960s, when the ICU was generally established and modern life support technologies were widely used in clinical practice, there was no diagnosis of brain death, the traditional notion of an irreversible cessation of heartbeat and respiratory death at the time. ,