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| Name | Class |
|---|---|
| The Physicians' Services Incorporated Foundation | OTHER |
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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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Clinically "likely" | Subjects deemed clinically likely to have DVT based on modified Well's criteria | ||
| Clinically "unlikely" | Subjects deemed clinically unlikely to have DVT based on modified Well's criteria |
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| Measure | Description | Time Frame |
|---|---|---|
| First co-primary outcome: sensitivity/specificity of LC U/S vs D-dimer in clinically "unlikely" DVT patients. | 3 days | |
| Second co-primary outcome: sensitivity/specificity of LC U/S plus D-dimer vs formal ultrasound in clinically "likely" DVT patients. | 3 days |
| Measure | Description | Time Frame |
|---|---|---|
| interobserver reliability of modified Well's criteria | 3 days | |
| learning curve for LC U/S by emergency physicians and residents | 365 days | |
| difference in diagnostic time interval for patients grouped by pre-test probability |
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Inclusion Criteria:
Exclusion Criteria:
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emergency patients suspected of deep vein thrombosis
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| Name | Affiliation | Role |
|---|---|---|
| Rachel Poley, MD | Queen's University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Kingston General Hospital | Kingston | Ontario | K7L 2V7 | Canada | ||
| Hotel Dieu Hospital |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 25269577 | Derived | Poley RA, Newbigging JL, Sivilotti ML. Estimated effect of an integrated approach to suspected deep venous thrombosis using limited-compression ultrasound. Acad Emerg Med. 2014 Sep;21(9):971-80. doi: 10.1111/acem.12459. |
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| ID | Term |
|---|---|
| D020246 | Venous Thrombosis |
| ID | Term |
|---|---|
| D013927 | Thrombosis |
| D016769 | Embolism and Thrombosis |
| D014652 | Vascular Diseases |
| D002318 | Cardiovascular Diseases |
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| 3 days |
| number of return visits for formal ultrasound imaging | 3 days |
| number of patients receiving empirical anticoagulation while formal ultrasound imaging is pending | 3 days |
| Kingston |
| Ontario |
| K7L 5G2 |
| Canada |