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Improving Emergency Department Testing for Deep Vein Thrombosis | Clinical Trials | Clareo Health

COMPLETED

Improving Emergency Department Testing for Deep Vein Thrombosis

Assessing the Safety and Efficiency of a Simplified Diagnostic Approach for Deep Vein Thrombosis

NCT06195787•Dr. Kerstin de Wit

Summary

This observational study will use a new way to test for deep vein thrombosis (DVT) of the leg. A DVT is a blood clot in the leg and is a medical problem that can cause swelling, pain, and redness. If the blood clot is not treated, it can cause more serious, long-term effects, and occasionally lead to death. The main questions the study aims to answer are: 1. How safe is our new blood clot testing method? 2. How efficient is our new blood clot testing method? The study will be run in the emergency department and urgent care centre in Kingston, Ontario. Patients who are tested for a DVT in the leg can be included in the study. Researchers follow the patient through chart review to make sure the new system is safe and efficient.

Eligibility

Age

18 - No limit years

Sex

ALL

Healthy Volunteers

Inclusion Criteria

•\- emergency physician decides to test for DVT of the lower limb.

Exclusion Criteria

•\<18 years of age;
•tested for DVT without using the ToDay algorithm at the index visit;
•D-dimer level is known before ToDay item assessment;
•a new indication for anticoagulation at the emergency department assessment (other than DVT) in a patient not previously prescribed an anticoagulant;
•a history of prior lower limb DVT, where there is no access to baseline ultrasound imaging;
•suspected of having a pulmonary embolism;
•has previously participated in this study;
•has previously opted out of all research at hospital site;
•left the emergency department or urgent care centre against medical advice;
•D-dimer was ordered prior to initial physician assessment;
+2 more criteria

Locations (1)

Kingston Health Sciences Centre

Kingston, Ontario, Canada

Key Dates

Start Date

January 1, 2024

Primary Completion Date

December 1, 2024

Completion Date

January 1, 2025

Last Updated

May 15, 2025

Enrollment

458

ACTUAL participants

Conditions

Deep Vein Thrombosis (DVT)

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Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: May 15, 2025Data synced to Clareo: March 29, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

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