Results Coronary artery narrow group its age, SBP, DBP, and PP comparison with coronary artery normal group difference has statistics significance(P<0.01).

结果冠状动脉狭窄组其年龄、SBP、DBP、PP比较冠状动脉正常组差异均有统计学意义（P<0.01）。

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There was no significant difference in HR, DBP, CVP and PAWP before and after extubation (P>0.05).

拔管前后的心率、舒张压、中心静脉压和肺动脉嵌压均无显著差异（P>0.05）；

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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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