手术室工作时间越长，此类疾病发生率越高，尤其以腰肌劳损最为显著（P。
The longer working in operating room, the higher the rate of occurring the disease mentioned above, especially the back weariness (p<0.005).
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）；
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).
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