结论：轻度出血主要由高凝、继发性纤溶亢进等引起，而原发性纤溶亢进则是重度出血最主要的原因；
Conclusion : Hyperfibrinolysis might be the main reason of bleeding in patients with sever hemorrhage , While hemostatic disorder in patients with mild hemorrhage was hypercoagulability ;
原发性纤溶亢进