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The Introduction of Retrievable Filters in the Trauma Population: Will the Advent of Retrievable IVC Filters Change Indications for Trauma Patients?
Kristina Spate, Faisal Aziz, John Aruny, Bauer Sumpio
Yale University, New Haven, CT

Objective: Determine if the use of retrievable filters has resulted in an increase in the placement of IVC filters in trauma patients.
Design: A computerized database of patients who underwent IVC filter placement at our institution between the years 1999-2004. .
Setting: Academic, Level One Trauma Center
Patients: 202 trauma patients, 676 non-trauma patients
Intervention: Inferior Vena Cava Filter Placement
Main Outcome Measure: Evaluate demographics, indications, complication rates and type of IVC filters placed in trauma patients versus non-trauma patients.
Results: 45.4 % (n=92) of trauma patients undergoing IVC filter placement were younger than 40 years of age compared with 7.8% (n= 53) of non-trauma patients. The most common indication for IVC filter placement in trauma patients was prophylaxis (n= 162, 80.2%) while in the non-trauma patients only 11.4% (n=77) of patients underwent prophylactic filter placement. The number of retrievable filters utilized in trauma patients increased from 46.7% in 2001, the year they became available, to 78.9% in 2004. The use of retrievable filters also increased in the non-trauma population from 35.9% in 2001 to 78.3% in 2004. The overall number of trauma patients undergoing filter placement remained relatively unchanged with a mean of 24.6% during this time period. The complication rate for this time period was 0.5 % (n=1) in the trauma population versus 3.7% (n= 25) in the non-trauma population.
Conclusion: The overall number of IVC filters placed in trauma patients did not dramatically increase with the introduction of retrievable filters suggesting that retrievable filters has not increased the overall use of IVC filters in the trauma population.


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