Contemporary Use of Prophylactic Inferior Vena Cava Filters in Patients With Severe Traumatic Injuries and High Thromboembolic Event Risk.

PURPOSE:The aim of this study was to evaluate the relationship between prophylactic inferior vena cava filter (IVCF) implantation and in-hospital deep vein thrombosis (DVT), pulmonary embolism (PE), and mortality among adults with intracranial, pelvic or lower extremity, and spinal cord injuries. METHODS:Patients 18 years and older with severe intracranial, pelvic or lower extremity, or spinal cord injuries captured by the Trauma Quality Improvement Program (2010-2019) were identified. IVCFs implanted ≤72 hours after hospital presentation and before performance of lower extremity ultrasonography were defined as prophylactic. Patients were stratified by pharmacologic venous thromboembolism (VTE) prophylaxis status. Logistic regression models estimated prophylactic inferior vena cava (IVC) filtration's effect on selected outcomes and identified attributes associated with prophylactic IVCF implantation. RESULTS:Of 544,739 included patients, 1.3% (n = 7,247) underwent prophylactic IVCF implantation. Among patients who received pharmacologic VTE prophylaxis, prophylactic IVC filtration compared with expectant management was positively associated with DVT (odds ratio [OR], 4.30; P < .001) and PE (OR, 4.30; P < .001) but not associated with mortality (OR, 0.92; P = .43). Among patients who received no pharmacologic prophylaxis, prophylactic IVC filtration was positively associated with DVT (OR, 4.63; P < .001) and PE (OR, 5.02; P < .001) but negatively associated with mortality (OR, 0.43; P < .001). CONCLUSIONS:Prophylactic IVC filtration was associated with increased likelihood of VTE among all adults with severe intracranial, pelvic or lower extremity, and spinal cord injuries. In patients who received no pharmacologic VTE prophylaxis, prophylactic IVC filtration was associated with decreased likelihood of in-hospital mortality.