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[Simon nitinol vena cava filters: effectiveness and complications]
1Universitätsklinik für Radiodiagnostik, Abteilung für Angiographie und Interventionelle Radiologie, AKH Wien, Germany.
Rofo : Fortschritte Auf Dem Gebiete Der Rontgenstrahlen Und Der Nuklearmedizin
|October 6, 2001
Summary
The Simon Nitinol vena cava filter (SNF) is safe and effective for preventing pulmonary embolism. Complication rates are low, making it a satisfactory option for patients requiring vena cava filters.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Medical Devices
Background:
- Pulmonary embolism (PE) is a significant cause of morbidity and mortality.
- Inferior vena cava (IVC) filters are used to prevent PE in high-risk patients.
- The Simon Nitinol filter (SNF) is one such device evaluated for safety and efficacy.
Purpose of the Study:
- To retrospectively analyze the clinical safety and effectiveness of the Simon Nitinol inferior vena cava filter (SNF).
- To evaluate the SNF's role in preventing pulmonary embolism.
- To assess complication rates associated with SNF implantation.
Main Methods:
- Retrospective analysis of 117 patients who underwent percutaneous SNF implantation.
- Evaluation of complications during and after implantation.
- Assessment of deep venous thrombosis (DVT) and PE before and after implantation using imaging techniques like helical-CT and radiography.
Main Results:
- Low complication rates: 9% minor, 0.9% major during implantation.
- Pulmonary re-embolism (PE) documented in 7.7% of patients.
- No significant increase in IVC or deep pelvic vein thrombosis; 100% IVC wall perforation observed but without clinical relevance.
Conclusions:
- The SNF is easy to implant and effectively prevents pulmonary embolism.
- The documented PE rate of 7.7% is considered satisfactory.
- Complication rates are generally low compared to other filter types, despite a high rate of asymptomatic IVC perforation.