持续植物状态 (Presistent Vegetative State,PVS)是一种特殊形式的意识障碍状态 ,又称醒状昏迷或睁眼昏迷。由Jennett等于 1972年首次提出后为各国文献所沿用 [1 ]。多见于昏迷患者恢复期 ,国外报道从昏迷进入 PVS的发生率为 9.88%～ 12 % [2 ]。其定义为 :患者完全失去对自身 Presistent Vegetative State (PVS) is a special form of disturbance of consciousness, also known as awake coma or open eyes unconscious. It was first used by Jennett in 1972 for reference in various countries [1]. More common in patients with convalescence recovery, foreign reports from the coma into the incidence of PVS 9.88% to 12% [2]. It is defined as: the patient completely lost himself