title: Chronic obstructive pulmonary disease and deep vein thrombosis: a prevalent combination.
abstract: BACKGROUND
  Patients with chronic obstructive pulmonary disease (COPD) are at increased risk for venous thromboembolism (VTE). We analyzed a large US deep vein thrombosis (DVT) registry to explore the profile of patients with COPD and VTE.
  
  
  METHODS
  Demographics, symptoms, risk factors, prophylaxis, and initial management of 668 (12%) patients with COPD were compared to 3,907 patients without COPD from a prospective registry of 5,451 consecutive patients with ultrasound-confirmed DVT at 183 institutions in the United States.
  
  
  RESULTS
  COPD patients with DVT were older (median 72.5 years vs. 68.0 years, P < 0.0001) and more likely to be male (52.3% vs. 44.8%, P = 0.0004). They were more likely to be inpatients at the time of diagnosis of DVT (62.0% vs. 51.9%, P < 0.0001). COPD patients were more likely to be admitted to the intensive care unit (ICU) (27.7% vs.19.8%, P = 0.0003), more likely to require mechanical ventilation (23.2% vs. 13.6%, P < 0.0001), and more likely to receive inferior vena caval (IVC) filters (19.1% vs. 15.1%, P = 0.009). COPD patients more often had concomitant pulmonary embolism (PE) (22.8% vs.17.8%, P = 0.005) as well as concomitant congestive heart failure (29.5% vs. 12.5%, P < 0.0001).
  
  
  CONCLUSIONS
  DVT patients with COPD have a greater medical acuity than other DVT patients. This results in more frequent IVC filter insertion.
authors.affiliation: Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.
authors.forename: Ranjith
authors.initials: R
authors.lastname: Shetty
authors.forename: Ali
authors.initials: A
authors.lastname: Seddighzadeh
authors.forename: Gregory
authors.initials: G
authors.lastname: Piazza
authors.forename: Samuel Z
authors.initials: SZ
authors.lastname: Goldhaber
mesh_terms: D000367:Age Factors; D000368:Aged; D003422:Critical Care; D005260:Female; D006333:Heart Failure / Q000453:epidemiology; D006801:Humans; D007297:Inpatients; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011446:Prospective Studies; D029424:Pulmonary Disease, Chronic Obstructive / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000628:therapy; D011655:Pulmonary Embolism / Q000453:epidemiology; D012042:Registries; D012121:Respiration, Artificial; D018570:Risk Assessment; D012307:Risk Factors; D012737:Sex Factors; D014463:Ultrasonography; D014481:United States / Q000453:epidemiology; D016306:Vena Cava Filters; D054556:Venous Thromboembolism / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000628:therapy; D020246:Venous Thrombosis / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000628:therapy