Role of Vena Cava Filter in the Prophylaxis and Treatment of Venous Thromboembolism in Injured Adult Patients: A Systematic Review, Meta-Analysis, and Practice Management Guideline from the Eastern Association for the Surgery of Trauma.

BACKGROUND: Injured patients are at an increased risk of developing deep vein thrombosis (DVT) and pulmonary embolism (PE). Inferior vena cava (IVC) filters have been used in injured patients to prevent venous thromboembolism (VTE), but current evidence-based guidelines are lacking.

METHODS: Questions regarding IVC filter use in injured patients with clearly defined Population(s), Intervention(s), Comparison(s), and appropriately selected Outcomes (PICO) were formulated. The study sought to understand the evidence behind use of ultra short term IVC filters and use of IVC filters in injured patients with and without known VTE who are unable to receive therapeutic anticoagulation and chemoprophylaxis, respectively. A literature search and review was conducted, followed by meta-analysis. The quality of evidence was assessed per Grading of Recommendations Assessment, Development and Evaluation (GRADE) methodology.

RESULTS: There were twenty-one studies that were analyzed. Three studies were randomized controlled trials (RCTs), three were observational studies, and fifteen studies were retrospective studies. In injured patients without known acute VTE who cannot receive chemoprophylaxis, we recommend against placement of an IVC filter due to associated higher rate of mortality, DVT, PE, and length of stay. The quality of evidence was assessed to be low. In injured patients with known DVT who cannot receive chemoprophylaxis we conditionally recommend against placement of an IVC filter. The quality of evidence was assessed to be very low. No recommendations can be made with respect to placement of ultra short term IVC filters based upon available data.

CONCLUSION: IVC filters should not be placed routinely for prophylaxis in injured adult patients without known VTE who cannot receive chemoprophylaxis. The taskforce conditionally recommends against the placement of IVC filter in injured adult patients with known DVT who cannot receive chemoprophylaxis.

LEVEL OF EVIDENCE: Guideline; Systematic review/meta-analysis, level IV.