title: Indwelling and Retrieval Complications of Denali and Celect Infrarenal Vena Cava Filters.
abstract: OBJECTIVE
  To compare indwelling and retrieval complications of Denali and Celect filters placed in the infrarenal inferior vena cava (IVC).
  
  
  METHODS
  A retrospective study was conducted over 2 years at a single institution in which 171 Denali and 162 Celect filters were placed in 333 patients with a mean age of 62.3 years ± 15.7 (161 men; 48.3%). Filter indications included venous thromboembolic disease (n = 320; 96.1%) and surgical prophylaxis (n = 13; 3.9%). A jugular approach was used to place 303 filters (91.0%). Computed tomography (CT) follow-up, complications, and retrieval data were obtained.
  
  
  RESULTS
  Follow-up CT imaging was performed on 58 filters from each group with lower incidences of caval strut penetration (one vs 12) and filter tilt (one vs 15) in the Denali filter group (P = .002 and P < .001, respectively). There was no difference in incidences of breakthrough pulmonary embolism (P = .68). Retrieval attempts were performed on 43 Denali and 53 Celect filters with mean indwelling times at retrieval of 128.2 and 144.1 days, respectively (P = .40). Mean fluoroscopy time at retrieval was lower in the Denali group (3.1 min vs 6.0 min; P = .01). There were fewer cases of complex retrieval in the Denali group (n = 2 vs 10; P = .06). Tilt, fluoroscopy time, and air kerma were associated with complex retrieval (P = .04, P < .001, and P < .001, respectively). There was one Denali filter deployment complication that led to retrieval failure.
  
  
  CONCLUSIONS
  This study suggests that Denali filters are associated with lower incidences of strut penetration and filter tilt as well as shorter fluoroscopy time at retrieval compared with Celect filters when placed in the infrarenal IVC.
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637. Electronic address: abos1210@gmail.com.
authors.forename: Aaron S
authors.initials: AS
authors.lastname: Bos
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637.
authors.forename: Thomas
authors.initials: T
authors.lastname: Tullius
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637.
authors.forename: Mikin
authors.initials: M
authors.lastname: Patel
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637.
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Leef
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637.
authors.forename: Rakesh
authors.initials: R
authors.lastname: Navuluri
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637.
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Lorenz
authors.affiliation: Department of Radiology, University of Chicago Medical Center, 5841 S. Maryland Ave., MC 2026, Chicago, IL 60637.
authors.forename: Thuong G
authors.initials: TG
authors.lastname: Van Ha
mesh_terms: D000368:Aged; D002641:Chicago; D000072226:Computed Tomography Angiography; D020878:Device Removal / Q000009:adverse effects* / Q000379:methods; D005260:Female; D005471:Fluoroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010690:Phlebography / Q000379:methods; D011474:Prosthesis Design; D019919:Prosthesis Implantation / Q000009:adverse effects* / Q000295:instrumentation*; D015641:Radiography, Interventional / Q000379:methods; D012189:Retrospective Studies; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome; D016306:Vena Cava Filters / Q000009:adverse effects*; D014682:Vena Cava, Inferior / Q000000981:diagnostic imaging