Objective:To study the cause of postpartum haemorrhage.

目的：探讨产后出血的临床原因。

Acute haemorrhage is the pathology base of different syndromes, so it is a crucial step to stop bleeding immediately.

发生严重创伤以后尤以急性失血为各种并发症的病理基础，因此，急救时给受伤肢体止血是一项极其重要的工作。

Human tissue type plasminogen activator(t-PA) is a perfect thrombus-dissolved medicament that can dissolve thrombus specifically and effectively but do not induce systemic haemorrhage. The optimal way that cure acute miocardial infarction is treated with t-PA.

人组织型纤溶酶原激活剂(t-PA)是一种理想的溶血栓药物，能高效特异溶解血栓而不引起全身出血现象，早期应用t-PA的溶解血栓是治疗急性心肌梗塞的最佳方案。