Retrieval characteristics of the Bard Denali and Argon Option inferior vena cava filters. 
The purpose of this study was to compare the retrieval characteristics of the Option Elite (Argon Medical, Plano, Tex) and Denali (Bard, Tempe, Ariz) retrievable inferior vena cava filters (IVCFs), two filters that share a similar conical design.  A single-center, retrospective study reviewed all Option and Denali IVCF removals during a 36-month period.  Attempted retrievals were classified as advanced if the routine "snare and sheath" technique was initially unsuccessful despite multiple attempts or an alternative endovascular maneuver or access site was used.  Patient and filter characteristics were documented.  In our study, 63 Option and 45 Denali IVCFs were retrieved, with an average dwell time of 128.73 and 99.3 days, respectively.  Significantly higher median fluoroscopy times were experienced in retrieving the Option filter compared with the Denali filter (12.18 vs 6.85 minutes; P = .046).  Use of adjunctive techniques was also higher in comparing the Option filter with the Denali filter (19.0% vs 8.7%; P = .079).  No significant difference was noted between these groups in regard to gender, age, or history of malignant disease.  Option IVCF retrieval procedures required significantly longer retrieval fluoroscopy time compared with Denali IVCFs.  Although procedure time was not analyzed in this study, as a surrogate, the increased fluoroscopy time may also have an impact on procedural direct costs and throughput.