Acute pulmonary embolism is a common disease with high morbidity and mortality in clinical medicine.In addition to antico-agulant therapy,thrombolytic therapy is an effective treatment for acute pulmonary embolism.The patients with acute pulmonary embol-ism can be divided into three status,high-risk,medium-risk and low-risk,based on the risk of early death and distinction,which shows an important guiding significance for thrombolytic therapy.%急性肺栓塞是临床上具有较高发病率和死亡率的常见病，除抗凝外，溶栓治疗是一种有效的治疗方法；基于急性肺栓塞早期死亡风险进行危险分层，将急性肺栓塞患者分为高危、中危、低危三种状况并区别对待，对溶栓治疗有重要指导意义。
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