Summary
Vena cava filters have been in use for decades to prevent pulmonary embolization from
deep venous thrombosis. These filters have been shown to be effective, with fairly
low rates of filter migration, fracture and thrombosis. However considering that filters
remain in situ for the life of the patient and that studies do not show increased
longevity in patients with filters, any complications from filters are significant
concerns. In addition, often patients require filters for only temporary indications,
e.g. contraindication for anticoagulation because of impending procedures, or for
only a transient risk period, as in trauma or pregnant patients. In these cases, removable
filters may be more appealing. This review will examine the different types of removable
filters and the indications in which removable filters may have an advantage over
permanent filters.
Keywords
Temporary - removable - retrievable - vena cava filter