论文部分内容阅读
出血时间(BT)试验是评价体内原发止血的一个简单而重要的检查。在止血过程中,虽然在血栓中结合了一些纤维蛋白,但止血主要依靠血小板数量和功能的正常。所以,遗传性和获得性血小板功能缺陷、血小板减少和遗传性血管性血友病均显示 BT 延长。相反,血管损害如坏血病及脉管炎时 BT 正常。从理论上讲,血凝障碍不引起 BT 延长,但已有报告某些血友病、严重纤维蛋白原减少症和因子 V 缺乏的病人可有 BT 延长。最近亦有报告,给鼠用华法令治疗后
The bleeding time (BT) test is a simple but important test that evaluates the primary hemostasis in the body. In the process of hemostasis, although some fibrin is bound in the thrombus, the hemostasis depends mainly on the number of platelets and the normal function. Therefore, inherited and acquired platelet defects, thrombocytopenia and hereditary von Willebrandit have demonstrated prolonged BT. In contrast, BT is normal in vascular lesions such as scurvy and vasculitis. Theoretically, it does not cause BT prolongation, but it has been reported that some patients with hemophilia, severe fibrinogen reduction and factor V deficiency may have BT prolongation. Recently there are also reports to rats after treatment with warfarin