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Objective To investigate the feasibility of deep venous thrombosis (DVT) in patients with inferior vena cava filter (IVCF) , under the guidance of color Doppler imaging (CDFI) will be placed in the right internal jugular vein inferior vena cava to prevent pulmonary embolism (PE) , safety and clinical value , to lay the foundation for guiding clinical treatment . June 2005 -2011 in January , 38 cases of lower extremity confirmed by clinical and CDFI examination for patients with deep venous thrombosis , for the prevention of pulmonary embolism, pulmonary embolism , or once again placed in the right internal jugular vein approach CDFI guided IVCF. All patients had no contraindications to anticoagulation disease after IVCF placement line anticoagulant thrombolytic therapy . Clinical monitoring the presence or absence of symptoms and signs of pulmonary embolism , regular ultrasound monitoring the IVCF the morphology and location . Temporary filter in place 32 to 45 days to remove the right internal jugular vein approach under ultrasound guidance . The follow-up observation did not produce pulmonary embolism, recurrent pulmonary embolism or filter complications . Results 38 patients were placed in IVCF are by preoperative CDFI examination , the right internal jugular vein , inferior vena cava, iliac vein bifurcation , bilateral renal vein opening position display are clear and no variation in all vein , inferior vena cava diameter range 17 ~ 27 mm, an average of about 22 mm, there was no thrombus , display 100 % the selected filter placement requirements . CDFI guided through the right internal jugular vein placed temporary IVCF 23 for permanent IVCF15 a technical success rate of 100% . The postoperative CDFI and X-ray KUB prove filter placement in the correct position to fully expand . 23 patients will be temporary IVCF removed through the right internal jugular vein , temporary IVCF indwelling time of 32 to 45 days , an average of 38.5 days . Follow-up results : emboli capture rate 36.5% , filter dislocation , displacement , fracture , patients do not appear to perforation of the vena cava , pulmonary embolism and recurrent pulmonary embolism and other complications , patients with inferior vena cava filter fimbria less than 10mm massive thrombosis with the other there are patients filters fimbria remove visible naked eye thrombosis , angiography and found no one cases of patients after 13 months when placed in a permanent filter clogging of the inferior vena cava . Conclusion CDFI guided through the right internal jugular vein puncture of the inferior vena cava filter implantation safe and reliable method ; relative to the X-ray fluoroscopic guidance , CDFI guided IVCF implantation is also simple , no radiation threat , cost effective method.
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