Study tests tools to spot repeat blood clots

NCT ID NCT02297373

Completed Knowledge-focused Sponsor: Ottawa Hospital Research Institute Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study looked at 744 people who had a blood clot before and were suspected of having another one. Researchers tested three different checklists (called clinical decision rules) to see how well they could tell if a new clot was really there. The goal was to help doctors avoid missing dangerous clots or giving unnecessary blood thinners.

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Conditions

The condition(s) this trial relates to.

pulmonary embolism Thromboembolism venous thromboembolism Venous Thrombosis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

DEEP VEIN THROMBOSIS PULMONARY EMBOLISM RECURRENT THROMBOEMBOLIC DISEASE THROMBOEMBOLIC DISEASE RECURRENT VENOUS THROMBOEMBOLISM

Contacts and locations

Locations

Geneva University Hospital

Geneva, Switzerland
Hamilton Health Sciences Centre

Hamilton, Ontario, L8L 2X2, Canada
Hopital Montfort

Ottawa, Ontario, K1K 0T2, Canada
Humber River Hospital

Toronto, Ontario, M3M 0B2, Canada
Lawson Health Research Institute

London, Ontario, N6G 4A5, Canada
Leiden University Medical Centre

Leiden, Netherlands
Nova Scotia Health Authority

Halifax, Nova Scotia, B3H 1V7, Canada
Sir Mortimer B. Davis Jewish General Hospital

Montreal, Quebec, H3T 1E2, Canada
The Ottawa Hospital

Ottawa, Ontario, K1H 8L6, Canada

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