Objective To compare the accuracy of bispectral index (BIS) and cerebral state index (CSI) used to measure depth of sedation during target-controlled infusion (TCI) of propofol.

目的对异丙酚靶控输注（TCI）镇静的患者，比较麻醉深度指数（CSI）与脑电双频谱指数（BIS）在无手术刺激条件下监测镇静深度的准确性。

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Objective To compare the accuracy of bispectral index (BIS) and cerebral state index (CSI) used to measure depth of sedation during target-controlled infusion (TCI) of propofol.

目的对异丙酚靶控输注（TCI）镇静的患者，比较麻醉深度指数（CSI）与脑电双频谱指数（BIS）在无手术刺激条件下监测镇静深度的准确性。

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