title: Characterizing resolution of catheter-associated upper extremity deep venous thrombosis.
abstract: OBJECTIVE
  Catheter-associated upper extremity deep venous thrombosis (CAUEDVT) is well known; however, resolution rates and factors affecting resolution of CAUEDVT are not well characterized. This study determined resolution rates and factors associated with resolution of CAUEDVT.
  
  
  METHODS
  From January 1, 2002, to June 30, 2006, 1761 upper extremity venous duplex ultrasound (DU) studies were performed, and a new UEDVT was found in 253 (14.4%). Of these, 150 patients had routine follow-up and 101 had CAUEDVT. Demographics, follow-up DU results, and risk factors for venous thrombosis were recorded in the patients with follow-up studies and CAUEDVT. Univariate analysis and multivariate logistic regression analysis was performed to determine independent risk factors for complete thrombus resolution.
  
  
  RESULTS
  There were 49 men (49%) and 52 women (51%) with CAUEDVT and follow-up studies. Mean age was 49 years (range, 5 months-80 years). Patients with CAUEDVT had risk factors for venous thrombosis that included malignancy in 34%, recent surgery/trauma in 34%, known hypercoagulable state in 11%, concomitant lower extremity DVT in 21%, and pulmonary embolism in 5%. Complete resolution of DVT on follow-up was documented in 46%. Thrombosis resolved in only 25% (6 of 24) when the catheter was not removed (P <or= .05). Anticoagulation did not improve the rate of thrombus resolution (P <or= 1.0) compared with catheter removal alone. Of the patients who had thrombus resolution, 75% resolved by 100 days (range, 1-914 days) after catheter removal <or=48 hours of diagnosis. In multivariate analysis, only catheter removal predicted the likelihood of thrombus resolution (odds ratio, 3.25; 95% confidence interval, 1.16-9.09; P = .025). New-site UEDVT developed in 86% of patients with CAUEDVT who underwent catheter removal and immediate catheter placement in a new site. Pulmonary embolism developed in five patients with CAUEDVT. Of these, three had documented lower extremity DVT as well. No pulmonary emboli were fatal.
  
  
  CONCLUSIONS
  More than half of CAUEDVT resolve <or=113 days when the catheter is removed <or=48 hours of diagnosis. New-site catheter placement has a high rate of new associated UEDVT. Anticoagulation does not appear to augment resolution of UEDVT.
authors.affiliation: Utah Vascular Center, Provo, Utah, USA.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Jones
authors.forename: Dae Y
authors.initials: DY
authors.lastname: Lee
authors.forename: Jocelyn A
authors.initials: JA
authors.lastname: Segall
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Landry
authors.forename: Timothy K
authors.initials: TK
authors.lastname: Liem
authors.forename: Erica L
authors.initials: EL
authors.lastname: Mitchell
authors.forename: Gregory L
authors.initials: GL
authors.lastname: Moneta
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000925:Anticoagulants / Q000627:therapeutic use*; D002405:Catheterization, Central Venous / Q000009:adverse effects* / Q000295:instrumentation; D002408:Catheters, Indwelling / Q000009:adverse effects*; D002648:Child; D002675:Child, Preschool; D020878:Device Removal; D004867:Equipment Design; D005260:Female; D006801:Humans; D007223:Infant; D053208:Kaplan-Meier Estimate; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D011655:Pulmonary Embolism / Q000209:etiology / Q000628:therapy; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D018616:Ultrasonography, Doppler, Duplex; D034941:Upper Extremity / Q000098:blood supply*; D056824:Upper Extremity Deep Vein Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology / Q000628:therapy*; D055815:Young Adult
chemical_list: D000925:Anticoagulants