title: Difficult OptEase filter retrievals after prolonged indwelling times.
abstract: OBJECTIVE
  The OptEase vena cave filter (Cordis, Piscataway, NJ) is commercially available as a retrievable or permanent filter with short recommended indwelling time, presumably due to extensive contact of the filter side struts with the inferior vena cava wall and subsequent neointimal hyperplasia leading to incorporation. Our purpose was to evaluate OptEase filter retrievals with a long indwelling time period that required unconventional retrieval techniques.
  
  
  METHODS
  We retrospectively reviewed patients who underwent OptEase filter retrieval with long undwelling times requiring additional maneuvers for retrieval. Techniques used included rigid endobronchial forceps dissection and wire-through-loop snare. Each patient underwent postretrieval venogram to evaluate for possible complications. In addition, patients had clinical follow-up 2 weeks after the retrieval procedure.
  
  
  RESULTS
  There were three patients (2 women, 1 man; average age 64 years) who underwent OptEase filter retrieval. The mean indwelling time was 6.4 months. The indwelling filters were successfully retrieved. There were no complications. Postprocedural follow-up showed no clinical pathology.
  
  
  CONCLUSIONS
  Unconventional techniques aided in the retrieval of OptEase filters with long indwelling times.
authors.affiliation: Section of Interventional Radiology, Department of Radiology, University of Chicago, Chicago, IL 60637, USA. tgvanha@radiology.bsd.uchicago.edu
authors.forename: Thuong G
authors.initials: TG
authors.lastname: Van Ha
authors.forename: Lisa
authors.initials: L
authors.lastname: Kang
authors.forename: Jonathan
authors.initials: J
authors.lastname: Lorenz
authors.forename: Steven
authors.initials: S
authors.lastname: Zangan
authors.forename: Rakesh
authors.initials: R
authors.lastname: Navuluri
authors.forename: Christopher
authors.initials: C
authors.lastname: Straus
authors.forename: Brian
authors.initials: B
authors.lastname: Funaki
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002405:Catheterization, Central Venous / Q000379:methods; D002408:Catheters, Indwelling; D020878:Device Removal / Q000295:instrumentation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D010690:Phlebography / Q000379:methods; D011474:Prosthesis Design; D011655:Pulmonary Embolism / Q000517:prevention & control*; D012189:Retrospective Studies; D018570:Risk Assessment; D012494:Sampling Studies; D013997:Time Factors; D016896:Treatment Outcome; D016306:Vena Cava Filters; D020246:Venous Thrombosis / Q000517:prevention & control*