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[Efficacy of anticoagulation on patency post-permanent inferior vena caval filter placements]

Yong-le Xu1, Guo-xiang Dong, Jun Zhao

  • 1Department of Vascular Surgery, Peking University Third Hospital, Beijing 100191, China.

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|March 23, 2010
PubMed

Insights

Anticoagulation does not improve the patency of permanent inferior vena caval filters (IVCFs). This study found no significant difference in filter patency rates between anticoagulated and non-anticoagulated patients with deep vein thrombosis.

Area of Science:

  • Vascular Surgery
  • Thrombosis Management
  • Medical Device Efficacy

Context:

  • Inferior vena caval filters (IVCFs) are used to prevent pulmonary embolism in patients with deep vein thrombosis (DVT).
  • The long-term efficacy of anticoagulation in maintaining IVCF patency remains a subject of investigation.
  • This retrospective study analyzed data from patients undergoing permanent IVCF placement between 2001 and 2007.

Purpose:

  • To evaluate the impact of anticoagulation on the patency of permanent inferior vena caval filters (IVCFs) in patients with lower extremity deep vein thrombosis (DVT).

Summary:

  • A retrospective review of 138 patients with permanent IVCFs for DVT was conducted, dividing them into non-anticoagulation, short-term anticoagulation (warfarin < 6 months), and long-term anticoagulation (warfarin > 6 months) groups.
  • Statistical analysis using chi-squared tests and Kaplan-Meier survival analysis revealed no significant differences in filter patency rates or cumulative patency over time between the three groups.
  • Filter thromboembolism occurred in 13.8% of patients, with no statistically significant variation in patency based on anticoagulation status.

Impact:

  • The findings suggest that anticoagulation does not offer a significant benefit in maintaining the patency of permanent IVCFs.
  • This research may influence clinical guidelines regarding the use of anticoagulation in conjunction with permanent IVCF placement.
  • Further prospective studies are warranted to confirm these results and explore alternative strategies for optimizing IVCF patency.
Abstract

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