Document Detail

Risk of deep vein thrombosis following a single negative whole-leg compression ultrasound: a systematic review and meta-analysis.
MedLine Citation:
PMID:  20124539     Owner:  NLM     Status:  MEDLINE    
CONTEXT: In patients with suspected lower extremity deep vein thrombosis (DVT), compression ultrasound (CUS) is typically the initial test to confirm or exclude DVT. Patients with an initial negative CUS result often require repeat CUS after 5 to 7 days. Whole-leg CUS may exclude proximal and distal DVT in a single evaluation.
OBJECTIVE: To determine the risk of venous thromboembolism after withholding anticoagulation in patients with suspected lower extremity DVT following a single negative whole-leg CUS result.
DATA SOURCES: MEDLINE, EMBASE, CINAHL, LILACS, Cochrane, and Health Technology Assessments databases were searched for articles published from January 1970 through November 2009. Supplemental searches were performed of Internet resources, reference lists, and by contacting content experts.
STUDY SELECTION: Included studies were randomized controlled trials and prospective cohort studies of patients with suspected DVT and a negative whole-leg CUS result who did not receive anticoagulant therapy, and were followed up at least 90 days for venous thromboembolism events.
DATA EXTRACTION: Two authors independently reviewed and extracted data regarding a single positive or negative whole-leg CUS result, occurrence of venous thromboembolism during follow-up, and study quality.
RESULTS: Seven studies were included totaling 4731 patients with negative whole-leg CUS examinations who did not receive anticoagulation. Of these, up to 647 patients (13.7%) had active cancer and up to 725 patients (15.3%) recently underwent a major surgery. Most participants were identified from an ambulatory setting. Venous thromboembolism or suspected venous thromboembolism-related death occurred in 34 patients (0.7%), including 11 patients with distal DVT (32.4%); 7 patients with proximal DVT (20.6%); 7 patients with nonfatal pulmonary emboli (20.6%); and 9 patients (26.5%) who died, possibly related to venous thromboembolism. Using a random-effects model with inverse variance weighting, the combined venous thromboembolism event rate at 3 months was 0.57% (95% confidence interval, 0.25%-0.89%).
CONCLUSION: Withholding anticoagulation following a single negative whole-leg CUS result was associated with a low risk of venous thromboembolism during 3-month follow-up.
Stacy A Johnson; Scott M Stevens; Scott C Woller; Erica Lake; Marco Donadini; Ji Cheng; José Labarère; James D Douketis
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Publication Detail:
Type:  Journal Article; Meta-Analysis; Review    
Journal Detail:
Title:  JAMA     Volume:  303     ISSN:  1538-3598     ISO Abbreviation:  JAMA     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-02-03     Completed Date:  2010-02-22     Revised Date:  2014-09-17    
Medline Journal Info:
Nlm Unique ID:  7501160     Medline TA:  JAMA     Country:  United States    
Other Details:
Languages:  eng     Pagination:  438-45     Citation Subset:  AIM; IM    
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MeSH Terms
Anticoagulants / therapeutic use*
Cohort Studies
Middle Aged
Randomized Controlled Trials as Topic
Ultrasonography / methods
Venous Thrombosis / drug therapy*,  epidemiology,  ultrasonography*
Reg. No./Substance:
Comment In:
JAMA. 2010 Feb 3;303(5):454-5   [PMID:  20124544 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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