There was significant decrease in systolic blood pressure in observing group at the time of femoral artery puncture compared with that in control group(P<0.05).
观察组股动脉穿刺时收缩压与入手术室时比较明显降低（P<0.05）；观察组行股动脉穿刺时收缩压与对照组比较明显降低（P<0.05）；
There was significant decrease in systolic blood pressure in observing group at the time of femoral artery puncture compared with that in control group(P<0.05).
观察组股动脉穿刺时收缩压与入手术室时比较明显降低（P<0.05）；观察组行股动脉穿刺时收缩压与对照组比较明显降低（P<0.05）；
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