Results: In grop B the time of surgery the quantity of blooding was less than grop A. but no statistical difference between the time of wakeing up , the varies of ST, and the inspection of lab.

• 结果：乙组手术时间、术中出血量明显少于甲组，术毕清醒时间、ST段改变、以及实验室检查无明显差异。