1定义植物状态为一种临床特殊的意识障碍，主要表现为对自身和外界的认知功能完全丧失，能睁眼，有睡眠—醒觉周期，丘脑下部及脑干功能保存。2诊断标准（1）认知功能丧失，无意识活动，不能执行指令；（2）保持自主呼吸和血压；（3）有睡眠一醒觉周期；（4）不能理解或表达语 1Define vegetative state is a kind of clinical special consciousness disorder, mainly manifested as the complete loss of cognitive function of itself and the outside world, can blink, sleep-wake cycle, preservation of function of the hypothalamus and brain stem. 2 Diagnostic criteria (1) Loss of cognitive function, unconscious activity, inability to execute instructions; (2) Maintenance of spontaneous breathing and blood pressure; (3) Sleep-awareness cycle; (4) Inability to understand or express language