重症监护病房病人行机械通气,易产生人机对抗。适度的镇静能有效地减少机械通气患者的不适。目前,临床上常用的镇静深度的评估方法以Ramsay评分和SAS等主观评分系统为主,但缺陷明显。BIS做为近年来评价镇静深度的客观指标,为医护人员提供了新的尝试。以下综述了BIS与主观评价系统在镇静评估过程中有良好的相关性;BIS可判断镇静程度和有效指导镇静药物的用量以及关于BIS的成本效益研究,可缩短患者ICU住院日及减少住院费用。 Patients in the intensive care unit underwent mechanical ventilation and were prone to human-machine confrontation. Moderate sedation can effectively reduce the discomfort of patients with mechanical ventilation. At present, the most commonly used methods for assessing the sedation depth are mainly the subjective scoring system such as Ramsay score and SAS, but the defects are obvious. BIS as objective indicators of the evaluation of the depth of sedation in recent years, for the medical staff to provide a new attempt. The following summarizes the good correlation between BIS and the subjective evaluation system in the sedation assessment process; BIS can determine sedation levels and the amount of sedatives that effectively guide sedation and cost-benefit studies on BIS to shorten ICU stay and reduce hospitalization costs.