IVC Filters - Indications for placement and Retrieval trends– Experience from a Tertiary Referral Centre in India TYPE OF SUBMISSION- Full paper

ABSTRACT Objectives There is wide variation in the practice of IVC filter placement and retrievals. We conducted a retrospective study to identify the trends in placement and retrievals of IVC filters in a tertiary referral centre in India. Methods The data of patients obtained from our hospital records, in whom IVC filter was placed between 2010 and 2018, were analysed for demographics, indications for placement of IVC filter, underlying comorbidities, characteristics of the filters as well as the retrieval rates. Results IVC filter were placed in 50 patients, and data was retrieved for 31 patients (mean - 51.24 years, 67.74% males). According to ACCP/AHA guidelines, 24 (77.42%) had an absolute indication for IVC filter. All 31 IVC filter were temporary, 23 (74.19%) of which were placed via femoral access. 29(93.55%) patients had infrarenal IVC filter placement. The average tilt at deployment was 3.71 degrees, whereas it was 5.3 degrees at retrieval. There were no periprocedural complications or filter migrations during placement or retrieval. Retrieval was attempted in 11 (35.48%) patients and was successful in 10. The mean indwelling time in this group was 158.55 days (range 55-366 days). Conclusion Our study reveals low IVC filter implantation rates which are predominantly for absolute rather than relative indications. Though in sync with the worldwide trend, the poor retrieval rates reflect the urgent need for better patient and physician awareness. Periodic follow up is imperative to improve the IVC filter retrieval rate and to prevent complication rates.