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Study identifier: NCT06320236 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Emergency Medicine Pulmonary Embolism Testing Multicentre Study

Condition: Pulmonary Embolism · D-dimer · Diagnosis  ·  Sponsor: Dr. Kerstin de Wit

PhaseN/A
Planned participants4000
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

It is important to diagnose pulmonary embolism in a timely manner to prevent death and long-term disability. More than half a million people (4-5% of emergency department patients) are tested for pulmonary embolism, although the positive rate is low. Imaging for PE testing exposes patients to radiation, is expensive, adds time to the emergency visit, and can lead to a false positive diagnoses. Existing protocols aimed at reducing unnecessary pulmonary embolism imaging are complex and seldom used by emergency physicians. Too many patients undergo unnecessary pulmonary embolism imaging. A new tool (called Adjust-Unlikely) could safely reduce pulmonary embolism imaging in Canada. A research group composed of researchers, emergency physicians, and patients developed the Adjust-Unlikely clinical decision rule: a rule which has been customized for emergency physicians and emergency patients. Adjust-Unlikely is highly sensitive at the bedside, meaning there are very few false negative results. The study aim is to prospectively validate Adjust-Unlikely pulmonary embolism testing in emergency patients with suspected pulmonary embolism.

This description comes directly from the study's public registry record.

Talk to the study team

Natasha S Clayton  ·  416-566-3590  ·  natasha.clayton@queensu.ca

Always discuss trial participation with your own doctor first.

Locations (4)

Hamilton Health Sciences CorporationHamilton, Ontario, CanadaRecruiting
Kingston Health Sciences CentreKingston, Ontario, CanadaRecruiting
London Health Sciences Centre Research IncLondon, Ontario, CanadaActive Not Recruiting
Ottawa Hospital Research InstituteOttawa, Ontario, CanadaActive Not Recruiting

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Source record: clinicaltrials.gov/study/NCT06320236