Complications of IVC filter placement What complications are related to IVC filter placement? Complications of filter placement can be related to the access site and include hematoma, venous thrombosis, and accidental arterial puncture. Complications related to the device include filter migration, malposition, fracture, infection, IVC perforation, failed deployment, and caval occlusion. IVC filter migration into …
Where in the IVC should the filter be placed, and why? It is preferable that the filter be placed immediately below the lowest renal vein. With the apex of the filter sitting just below the renal veins, any clot caught by the filter is subject to high blood flow from the renal veins and may …
What is a retrievable IVC filter? A retrievable or optional IVC filter can be left in place permanently or can be removed if it is no longer needed.
Can patients with an IVC filter still get PE? Yes. There are several ways for patients with a filter to get PE. A patient may have had an anatomic variant that was not recognized during filter placement that permitted a clot to bypass the filter. Even in the absence of such variants, a filter would …
Who could benefit from a retrievable IVC filter? Patients who could benefit from a retrievable IVC filter are those who only need short-term protection from DVT. This might include trauma patients who cannot be anticoagulated acutely but are expected to recover, surgical patients with a short-term increased risk for PE, surgical patients who need to …
What are the features of a circumaortic left renal vein? How common is this anatomic variant? A circumaortic left renal vein is an anatomic variant in which the left renal vein forms a ring around the abdominal aorta. It has a prevalence of 1.5% to 8.7%. The anterior segment of the ring connects with the …
Where should a filter be placed in a patient with a circumaortic left renal vein? If unrecognized, a circumaortic left renal vein may provide a collateral pathway for a clot to circumnavigate a filter and embolize to the lungs. If the filter is placed above the posterior segment, a clot may travel up the posterior …
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