Method Forty cases of control group were treated with commonly used intravenous drip of low-molecular dextran,added Salviae Miltiorrhizae injection and Agkistrodon halys anti-thrombotic enzyme.

• 方法设通常所用的静脉滴注低分子右旋糖酐加丹参注射液和蝮蛇抗栓酶治疗40例为对照组；