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[Vena cava filter. Indications, complications, clinical evaluation]

T Helmberger1, R Helmberger, N Holzknecht

  • 1Institut für Radiologische Diagnostik, Klinikum Grosshadern, Ludwig-Maximilians-Universität München.

Der Radiologe
|September 17, 1998
PubMed
Summary
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Pulmonary embolism (PE) is a leading cause of death. Vena cava filters offer an alternative when anticoagulation fails, but their efficacy requires careful consideration due to potential complications like caval thrombosis.

Area of Science:

  • Vascular Surgery
  • Interventional Radiology
  • Cardiology

Background:

  • Pulmonary embolism (PE) is a significant cause of mortality in Western countries.
  • Anticoagulation therapy is the primary treatment for PE.
  • Vena cava filters are an alternative when anticoagulation is contraindicated or fails.

Purpose of the Study:

  • To review the types, efficacy, and complications of vena cava filters.
  • To evaluate the clinical utility of percutaneously implanted vena cava filters.

Main Methods:

  • Classification of vena cava filters by design, material, and removability.
  • Analysis of in vitro efficacy and complication rates (caval thrombosis, filter fracture).

Main Results:

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  • No significant differences in trapping efficacy among filter types in clinical practice.
  • Approximately 4% of patients treated with filters still experience PE; 1% have fatal outcomes.
  • Caval thrombosis is the most common complication, occurring in up to 25% of cases, depending on filter type.

Conclusions:

  • Percutaneous implantation of vena cava filters is feasible for interventional radiologists.
  • Randomized clinical studies have not conclusively demonstrated the efficacy of vena cava filters.
  • Careful consideration of filter indication is necessary due to limited proven efficacy and potential complications.