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目的:评价麻醉深度指数(cerebral state index,CSI)在靶控输注异丙酚麻醉诱导过程中预测患者麻醉深度的精确程度。方法:40例成人全麻手术患者,ASA(American Society of Anesthesiologists)Ⅰ-Ⅱ级,靶控输注异丙酚诱导,最初血浆靶浓度设置在0.5mg/5min增加0.5mg/L,直至改良清醒镇静(modified observer's assessment of alertness/sedation,MOAA/S)评分为0后5min停止。试验中监测患