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Related Experiment Videos

The percutaneous greenfield filter: outcomes and practice patterns.

L J Greenfield1, M C Proctor

  • 1Department of Surgery, University of Michigan, Ann Arbor, MI 48109-0346, USA.

Journal of Vascular Surgery
|October 29, 2000
PubMed
Summary
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The percutaneous steel Greenfield filter (PSGF) shows comparable patient outcomes to the titanium Greenfield filter (TGF). Its improved design facilitates easier insertion and increased prophylactic use, enhancing physician practices.

Area of Science:

  • Vascular Surgery
  • Medical Device Evaluation
  • Inferior Vena Cava Filters

Background:

  • The percutaneous steel Greenfield filter (PSGF) and titanium Greenfield filter (TGF) differ in design, potentially impacting clinical use and outcomes.
  • Understanding these differences is crucial for optimizing inferior vena cava (IVC) filter placement and patient management.

Purpose of the Study:

  • To evaluate the performance of the PSGF compared to the TGF.
  • To assess changes in physician practices related to IVC filter placement.

Main Methods:

  • Analysis of prospective data from the Michigan Filter Registry (n=2188).
  • Comparison of periprocedural and long-term outcomes for PSGF versus TGF recipients.
  • Evaluation of trends in filter indication, delivery route, and location.

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Main Results:

  • PSGF placement in 599 patients (600 filters) since 1995.
  • Periprocedural event rate of 2.5% with 1.5% morbidity.
  • 12.5% combined rate of new venous thromboembolic events; 98.3% vena caval patency.
  • Increased left femoral vein access (20%) and primary use for prophylaxis (46%).

Conclusions:

  • PSGF demonstrates comparable patient outcomes to TGF with improved fixation and reduced asymmetry.
  • The flexible delivery system enables greater use of the left femoral vein.
  • Ease of use and favorable outcomes promote increased prophylactic IVC filter placement.