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Related Experiment Videos

Suprarenal filter placement

L J Greenfield1, M C Proctor

  • 1Department of Surgery, University of Michigan Hospitals, Ann Arbor, USA.

Journal of Vascular Surgery
|September 16, 1998
PubMed
Summary
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Suprarenal Greenfield filters effectively prevent pulmonary embolism (PE) with low occlusion rates, comparable to infrarenal placements. These filters are safe and effective for patients requiring suprarenal inferior vena cava (IVC) placement.

Area of Science:

  • Vascular Surgery
  • Interventional Radiology
  • Cardiovascular Medicine

Background:

  • Inferior vena cava (IVC) filters are crucial for preventing pulmonary embolism (PE).
  • Suprarenal (SR) placement of IVC filters is an alternative to infrarenal placement, particularly in specific patient populations.
  • Assessing the long-term clinical outcomes of SR IVC filter placement is essential for patient management.

Purpose of the Study:

  • To evaluate the clinical outcomes of Greenfield filters placed in the suprarenal (SR) portion of the inferior vena cava (IVC).
  • To compare the safety and efficacy of SR IVC filter placement with infrarenal placement.

Main Methods:

  • Prospective data collection with annual follow-up evaluations.
  • Venous color-flow duplex examinations, abdominal radiographs, and physical assessments were performed.

Related Experiment Videos

  • Outcomes of SR filter placements were compared to historical infrarenal filter data.

    • Main Results:

    • SR placement constituted 7.6% of all Greenfield filter placements.
    • No renal dysfunction was attributed to SR filter placement.
    • Recurrent PE rate was 8% and caval occlusion rate was 2.7%, not statistically different from infrarenal filters.

    Conclusions:

    • Greenfield filters in the SR IVC offer effective PE protection with minimal occlusion risk.
    • The study demonstrates 25 years of safety and efficacy for SR Greenfield filters.
    • SR Greenfield filters are suitable for patients with appropriate indications, including young females of childbearing potential.