An observational study in Deep Vein Thrombosis, sponsored by Queen's University. Completed at 2 sites in Canada. Open to participants aged 16 Years and older. Per ClinicalTrials.gov, last updated 2011-06-09.
Sponsored by Queen's University · Observational
Deep vein thrombosis is a common condition seen in the Emergency Department. Standard of care for diagnosis of DVT includes a combination of a clinical pre-test probability rule known as Well's criteria, D-dimer blood testing, and Radiology department ultrasound.
The purpose of this study is to determine whether Emergency Physicians can safely rule out deep vein thrombosis using Well's criteria and D-dimer blood testing combined with Emergency department bedside ultrasound.
1,506 studies on the registry are indexed under Thrombosis; 238 are open to participants now.
This study's enrollment of 227 is close to the median of 213 across 586 observational studies indexed under Thrombosis.
Browse Thrombosis studies →Queen's University is the lead sponsor of 199 studies on the registry; 16 are open to participants now.
Counted across the registry records on this site, refreshed daily.
emergency patients suspected of deep vein thrombosis
Exclusion Criteria:
Subjects deemed clinically likely to have DVT based on modified Well's criteria
Subjects deemed clinically unlikely to have DVT based on modified Well's criteria
First co-primary outcome: sensitivity/specificity of LC U/S vs D-dimer in clinically "unlikely" DVT patients.
Time frame: 3 days
Second co-primary outcome: sensitivity/specificity of LC U/S plus D-dimer vs formal ultrasound in clinically "likely" DVT patients.
Time frame: 3 days
interobserver reliability of modified Well's criteria
Time frame: 3 days
learning curve for LC U/S by emergency physicians and residents
Time frame: 365 days
difference in diagnostic time interval for patients grouped by pre-test probability
Time frame: 3 days
number of return visits for formal ultrasound imaging
Time frame: 3 days
number of patients receiving empirical anticoagulation while formal ultrasound imaging is pending
Time frame: 3 days
This study is completed, as verified in Jun 2011. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Queen's University