- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02809638
A New Technique to Diagnose Acute and Chronic Deep Vein Thrombosis
Ultrasound Elastography: a New Technique to Diagnose Acute and Chronic Deep Vein Thrombosis
In clinical practice, compression ultrasound (CUS) has become an easy and reliable noninvasive tool for the diagnosis of deep vein thrombosis (DVT).
Currently there are not validated methods to assess the biological age of venous thrombus, and the date of onset of thrombosis. One potential technique to age DVT is ultrasound elastography (UE). UE is a noninvasive technique to measure tissue hardness, and it is well known that thrombi harden as they age. The aim of this study will be to assess the ability of UE to distinguish acute from chronic DVT. The investigators will evaluate prospectively all consecutive outpatients presenting with clinically suspected unprovoked DVT of the lower limbs, and those having a previous diagnosis of DVT for the scheduled 3 months visit of follow-up, for a period of about one year. All the enrolled patients will undergo to the CUS of the lower limbs, and at the same time to the ultrasound elastography by the physician expert in vascular ultrasound. The specialist performing both examinations will be unaware of the time of onset of DVT (acute or chronic). Then the patients will be divided into two groups (group A: patients with acute DVT; group B: patients with chronic DVT at the 3rd month of follow-up). Each examination (CUS and ultrasound elastography) will be repeated three times in the same patient at the same visit, to assess the reproducibility of the technique. The demographic data, medical history, physical examination and the results of CUS and ultrasound elastography will be collected in a case report form (CRF) by another investigator who does not perform the examinations. The blinded CRF will be submitted to a dedicated committee for statistical analysis.
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Tuscany
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Livorno, Tuscany, Italy, 57100
- Azienda USL 6 Livorno
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- acute first episode of unprovoked DVT of lower limbs
- chronic first episode of unprovoked DVT of lower limbs (at third month of follow up)
Exclusion Criteria:
- previous episodes of DVT
- ongoing anticoagulation
- age younger than 18 years
- pregnancy
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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DVT of the lower limbs
patients with first suspected episode of unprovoked DVT of the lower limbs and patients with episode of unprovoked DVT of the lower limbs at third month of follow-up
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Density of clots in patients having acute or 3 month DVT of the lower limb, using the technique of elastosonography.
Time Frame: 1 year
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1 year
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Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change of the density of the clots measured by elastosonography, assessing the elastic deformability of the thrombus, and correlating it with the time of occurrence of the thrombosis (fresh or three month aged clots)
Time Frame: 1 year
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1 year
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Collaborators and Investigators
Investigators
- Study Chair: Nicola Mumoli, M.D., Department of Internal Medicine, Livorno Hospital, Livorno, Italy
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Azienda USL Toscana Nord Ovest
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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