Brandon Leake BS, Presenter: Nothing to Disclose

Jeremy Lance Friese MD, Abstract Co-Author: Consultant, Covidien AG Consultant, Medtronic, Inc

Chad Jeremy Fleming MD, Abstract Co-Author: Nothing to Disclose

Sanjay Misra MD, Abstract Co-Author: Nothing to Disclose

Michael A. McKusick MD, Abstract Co-Author: Nothing to Disclose

Andrew Stockland, Abstract Co-Author: Nothing to Disclose

Ryan S. Youland, Abstract Co-Author: Nothing to Disclose

Haraldur Bjarnason MD, Abstract Co-Author: Nothing to Disclose

The aim of this study was to use a large, unselected sampling of US hospitalizations to identify trends in IVC filter placement, costs, and outcomes from 2001 through 2008.

The Nationwide Inpatient Sample (NIS) database was utilized to identify hospitalizations with International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) procedure codes for IVC filter placement (38.7). Appropriate weights from the NIS database were applied for national estimates. In addition to annual procedure volume, numerous demographic and outcome variables were examined. Multiple linear regression analyses were used to assess the utilization trends.

Between 2001 and 2008, over 790,000 IVC filters have been inserted in the U.S. on an inpatient basis. From 2001 to 2008, there was a 102% increase in the number of hospital discharges for patients who had received an IVC filter, with a year-to-year increase averaging 10.9%. Slightly over half of the patients (52%) were female and the median age of patients treated was 69 (IQR 55-80 years). The majority of the patients (62%) had a Deyo adapted Charleson index score of 0 or 1, indicating no major comorbidity. The length of stay for patients that received an IVC filter stayed relatively constant at approximately 14.5 days, while the mortality rate decreased from 8.6% in 2001 to 7.1% in 2008 (p<0.001). Total hospital charges increased approximately 88.5% from 2001 to 2008 with a year-to-year increase averaging 9.6%.

IVC filter utilization in the inpatient setting increased dramatically from 2001 to 2008 and was associated with similar cost increases. However, a steady, significant decline in mortality was noted during the sampled time period.

This study will demonstrate the increased utilization of IVC filters, their associated costs, and overall mortality of inpatients with filters in the United States.

Leake, B, Friese, J, Fleming, C, Misra, S, McKusick, M, Stockland, A, Youland, R, Bjarnason, H, Inpatient Inferior Vena Cava Filter Utilization, Costs, and Outcomes: A Study of the National Inpatient Sample 2001-2008.  Radiological Society of North America 2011 Scientific Assembly and Annual Meeting, November 26 - December 2, 2011 ,Chicago IL. http://archive.rsna.org/2011/11013668.html