关于肺栓塞的诊断和治疗需要一个更规范化的方法。大量吸烟、高血压、口服第三代配方避孕药、激素替代疗法、肿瘤(其细胞能产生凝血酶或者合成多种促凝物质)及外科手术(尤其在术后15～30天)都是肺栓塞的危险因素。活化蛋白C是一种最强的内源性抗凝剂。在具有静脉血栓形成史的人群中活化蛋白C抵抗相当普遍。而这种抵抗显示为一种常染色体显性遗传,称之为因子V Leiden突变。口服 Diagnosis and treatment of pulmonary embolism need a more standardized method. Heavy smoking, high blood pressure, third-generation oral contraceptives, hormone replacement therapy, tumors (the cells produce thrombin or a variety of procoagulants), and surgery (especially 15 to 30 days after surgery) are all lungs Risk factors for embolism. Activated Protein C is one of the strongest endogenous anticoagulants. Activated protein C resistance is quite common in people with a history of venous thrombosis. And this resistance is shown as an autosomal dominant inheritance, called the factor V Leiden mutation. oral