一般类型的肺栓塞是由凝血所引起的血栓栓塞。其他造成肺栓塞的物质还有羊水、肿瘤团块、空气和导管等。脂肪栓塞多继发于代谢性疾病和外伤。肺栓塞如不经治疗 ,死亡率在 3 0 %以上 ,根据病情轻重程度 ,症状也不尽相同。近年 ,该病在日本有增多趋势 ,这与临床医师对该病认识的 The common type of pulmonary embolism is thromboembolism caused by clotting. Other substances that cause pulmonary embolism include amniotic fluid, tumor mass, air and catheters. Fat embolism and more secondary to metabolic diseases and trauma. If not treated, the mortality rate is above 30%. According to the severity of the disease, the symptoms are not the same. In recent years, there is an increasing trend of the disease in Japan, which is related to clinicians’ understanding of the disease