title: Patterns of referral for inferior vena caval filtration: delays and their impact.
abstract: OBJECTIVE
  We sought to study the referral patterns for inferior vena caval filtration and explore the relationship between delays in filter insertion and clinical outcomes.
  
  
  METHODS
  We retrospectively reviewed 101 consecutive inferior vena caval filters inserted in 101 patients in a university hospital between the June 2000 and July 2001. A time line was created listing the time of diagnosis of deep venous thrombosis or pulmonary embolism, contraindication or complication of anticoagulation therapy, and time of insertion of inferior vena caval filter.
  
  
  RESULTS
  The average elapsed time between the clinical indication for caval filtration and filter placement in all patients was 1.64 days (range, 0-17 days). Two patients (2%) sustained pulmonary emboli after being diagnosed with deep venous thrombosis before receiving a filter. The lengths of time between filter indication and insertion for these patients were 2 and 8 days.
  
  
  CONCLUSIONS
  In our hospital, there are wide variations in perceived urgency of vena caval filtration. In two patients, delays longer than 24 hr between indication and insertion of inferior vena caval filters resulted in symptomatic pulmonary emboli.
authors.affiliation: Department of Radiology, The University of Chicago Hospitals, 5841 S Maryland Ave, MC 2026, Chicago, IL 60637, USA.
authors.forename: Gregory
authors.initials: G
authors.lastname: Henkle
authors.forename: Phillip
authors.initials: P
authors.lastname: Kunz
authors.forename: Brian
authors.initials: B
authors.lastname: Funaki
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010818:Practice Patterns, Physicians'; D011655:Pulmonary Embolism / Q000209:etiology / Q000517:prevention & control*; D015641:Radiography, Interventional; D012017:Referral and Consultation; D012189:Retrospective Studies; D013997:Time Factors; D016306:Vena Cava Filters; D014682:Vena Cava, Inferior; D020246:Venous Thrombosis / Q000150:complications