Abstract
Few studies have evaluated the use of vena cava filters (VCF) in cancer patients with acute venous thromboembolism (VTE). Hospital discharge records of patients who were admitted with a principal diagnosis of lower extremity deep-vein thrombosis or pulmonary embolism and cancer in California between January 1, 2005 and December 31, 2009 were analyzed. Multivariable logistic regression analysis was used to identify variables associated with VCF use. A VCF was placed in 2747 (19.6%) of 14,000 cancer patients. The percentage of patients treated with a VCF varied widely across hospitals, from 0% to 52% (mean=19.2%, median=17.2%), and by cancer type, ranging from 8% for lip/oral to 43% for brain. Using multivariable analysis, the strongest predictors of VCF use were a diagnosis of brain cancer (OR=4.6, CI: 3.7 -5.6), undergoing major surgery (OR=4.9, CI: 3.9 -6.1), and bleeding (OR=2.7, CI: 2.0-3.5). Other factors significantly associated with VCF insertion included hospital characteristics (larger, urban and private), and greater severity-of-illness at the time of admission. Only 1083 (7.7%) of patients had an absolute contraindication to anticoagulation (bleeding or surgery). A VCF was deployed in approximately 20% of acute VTE pa...Continue Reading
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