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Deploying a Straight Conical Filter 

Deploying a Straight Conical Filter
Deploying a Straight Conical Filter

S. Lowell Kahn

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date: 02 August 2021

Placement of inferior vena cava (IVC) filters is among the most common medical procedures, with more than 265,000 placed annually. Absolute indications for their placement include acute proximal deep venous thrombosis (DVT) and pulmonary embolism (PE) in patients who have an absolute contraindication to anticoagulation and patients with recurrent thromboembolism despite adequate anticoagulation. Although the survival benefit is unknown, it has been shown that filters decrease the incidence of PE in the short term. Unfortunately, this comes at the expense of known complications, the most important being DVT. This chapter discusses simple techniques to prevent conical filter tilting and enhance retrieval.

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