To compare the effect of the bispectral index (bis) and the systolic blood pressure (SBP) on controlling the depth of propofol anesthesia.

比较脑电双频指数(BIS)和收缩压(SBP)调控异丙酚麻醉深度的临床效果。

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The difference of T/P ratio of systolic blood pressure(SBP) and diastolic blood pressure(DBP) between the two groups were significant(P <0.05);

治疗组和对照组之间降压谷峰比值即（T/P）收缩压、舒张压差异有显著性（P<0.05）；

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