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目的：评价置入下腔静脉滤器预防因下肢静脉血栓脱落引起肺栓塞的效果和安全性。材料与方法：１６例下肢深静脉血栓患者置入钛质Ｇｒｅｎｆｉｅｌｄｆｉｌｔｅｒ（ＴＫＧ）１２例，Ｂｉｒｄ’ｓｎｅｓｔｆｉｌｔｅｒ（ＢＮＦ）４例。滤器位于双肾静脉水平以下的腔静脉内。术后分别于１、６、１２个月摄腹部平片复查，观察滤器的位置、形态变化。结果：全部滤器经股静脉穿刺置入，经右股静脉１３例，左股静脉３例，无严重并发症发生。随访发现ＴＫＧ２例向足侧移位，１例向头侧移位，１例跨度增大，腹部ＣＴ，腔静脉造影发现滤器的１只脚穿透腔静脉壁，未出现任何症状；２例发生滤器偏斜，角度小于１５°。ＢＮＦ未见位置改变。无１例发生腔静脉阻塞或复发肺栓塞。结论：置入下腔静脉滤器预防肺栓塞是安全、有效的方法。
Objective: To evaluate the effectiveness and safety of inferior vena cava filters in preventing pulmonary embolism caused by exfoliation of venous thrombi in lower extremities. Materials and Methods: Twenty-six cases of titanium Grenfieldfilter (TKG) and four cases of Bird’s fibber (BNF) were placed in 16 patients with deep venous thrombosis of the lower extremity. The filter is located within the vena cava below the level of the renal vein. Postoperative 1, 6, 12 months were taken abdominal plain film review, observe the filter position, morphological changes. Results: All the filters were inserted through femoral vein puncture. There were 13 cases of right femoral vein and 3 cases of left femoral vein without serious complications. Followed up the TKG2 cases were found to shift to the foot side, 1 case of head to the side shift, 1 case of increased span, abdominal CT, vena cava angiography found that the filter 1 foot through the vena cava wall, no symptoms; 2 cases Filter skew, angle less than 15 °. BNF no change of position. No case of vena cava occlusion or recurrent pulmonary embolism. Conclusion: Inferior vena cava filter to prevent pulmonary embolism is a safe and effective method.