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complications, respectively, whereas family history of venous thromboembolism was associated with a 77% (aHR, 1.77; 95% CI, 1.17-2.68; P ¼ .007) increase in late complications (Fig 2). Immediate (P ¼ .21) and late complications (P ¼ .51) did not result in increased mortality.Conclusions: Immediate and late IVC filter complications were 1.8% and 3.1%, respectively, and were not associated with increased mortality. Female sex and abnormal anatomy were associated with increased immediate complications. On the other hand, adequate renal vein visualization can reduce these complications significantly. The majority of late complications were related to filter thrombosis, which may be reduced with aspirin use and if retrieval is performed when indicated. Larger prospective studies are needed to confirm the outcomes described herein.