title: [Therapy of catheter-directed thrombolysis for inferior vena cava thrombosis after filter implantation].
abstract: OBJECTIVE
  To evaluate the efficacy and safety of catheter-directed thrombolysis (CDT) in treating with inferior vena cava (IVC) thrombosis after filter implantation.
  
  
  METHODS
  A retrospective analysis of 13 patients with IVC thrombosis after filter implantation was conducted at our institution from June 2009 to June 2012. A total of 26 lower extremities were involved.IVC filters were implanted via right internal jugular vein. Then CDT was performed through small saphenous vein, popliteal vein or femoral vein. The dosage of urokinase was 0.6-1 million/day. The occlusive segment in IVC was managed with percutaneous transluminal angioplasty (PTA) and stenting.
  
  
  RESULTS
  The obstructed IVC was re-opened after CDT in 11 cases. The average CDT time was 8.3 (7-13) days. PTA (n = 2) and stenting (n = 1) were performed. A total of 4 retrievable filters were planted and retrieved later successfully.No severe complications occurred. During the follow-ups, no clinically detetable sighs of pulmonary embolism were observed.
  
  
  CONCLUSIONS
  CDT is effective, safe and feasible in the treatment of IVC thrombosis after filter implantation.
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
authors.forename: Fengrui
authors.initials: F
authors.lastname: Lei
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China. Email: flytsg@126.com.
authors.forename: Xiaoqiang
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
authors.forename: Aimin
authors.initials: A
authors.lastname: Qian
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
authors.forename: Xiaobin
authors.initials: X
authors.lastname: Yu
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
authors.forename: Jianjie
authors.initials: J
authors.lastname: Rong
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
authors.forename: Hongfei
authors.initials: H
authors.lastname: Sang
authors.affiliation: Department of Vascular Surgery, Second Affiliated Hospital, Soochow University, Suzhou 215004, China.
authors.forename: Qingyou
authors.initials: Q
authors.lastname: Meng
mesh_terms: D006801:Humans; D007601:Jugular Veins; D035002:Lower Extremity; D011655:Pulmonary Embolism; D012189:Retrospective Studies; D015607:Stents; D015912:Thrombolytic Therapy; D013927:Thrombosis / Q000628:therapy*; D016306:Vena Cava Filters; D014682:Vena Cava, Inferior