The use of inferior vena cava (IVC) filters is increasing rapidly, and the recent availability of retrievable IVC filters is certain to accelerate this process. Unfortunately, because the risks and benefits of these devices have not been adequately studied, several important issues remain. Limitations of the quality of the data in the available literature make it virtually impossible to accurately quantify the specific rates of complications with various devices. Although many clinicians believe that the use of an IVC filter obviates anticoagulation, new data support the need for long-term anticoagulation in such patients. The recent introduction of retrievable IVC filters may eliminate the need for long-term anticoagulation if the filter can be removed, but further data are needed to ascertain the place of these devices in modern therapy. The increasing use of these devices increases the need for clinicians to be aware of the potential limitations and risks of IVC filters.
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