Assessing blood flow changes in patients with suspected deep vein obstruction using a non-invasive method
Official title: Non-invasive Venous Air Plethysmography Assessment of Venous Hemodynamics in Patients Suspected Deep Venous Obstruction Used in Conjunction With Intermittent Pneumatic Compression.
Run by Mayo Clinic · NCT06519435 · Data updated 2026-11-12
This study is testing a new non-invasive device to see if it can help understand blood flow changes in patients who might have deep vein thrombosis (DVT).
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 500 (estimated) |
| Sponsor | Mayo Clinic Academic / other |
| Locations | 1 site (Rochester, Minnesota) |
| Status | Recruiting |
| Started | November 15, 2024 |
| Main results expected | December 2026 |
| Study ends | April 2027 |
| Registry record updated | October 28, 2025 |
| Trial ID | NCT06519435 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are patients who have had a venous ultrasound indicating potential DVT within the last 72 hours.
✕Probably not a fit
Patients with conditions that prevent access to the target limb or those unable to provide informed consent may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study aims to evaluate venous blood flow changes in patients suspected of having deep vein thrombosis (DVT) using a non-invasive air-filled bladder under an intermittent pneumatic compression device. The study will involve patients who have undergone a venous ultrasound within the last 72 hours to assess for DVT. The devices used in this study are investigational and not yet cleared by the FDA, focusing on improving diagnostic methods for DVT. The goal is to enhance understanding of venous hemodynamics in patients at risk for DVT.
Why it matters
Potential benefit: If successful, this study could lead to improved diagnostic techniques for detecting deep vein thrombosis, potentially reducing complications associated with the condition.
How similar studies have gone: While this approach is investigational, similar non-invasive methods have shown promise in other studies, suggesting potential for success.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Venous ultrasound study to evaluate for lower extremity DVT unilateral and/or bilateral within previous 72 hours. Exclusion Criteria: * Patients with inaccessible target limb (ultrasound limb) due to bandages (wound, burn, lesion, etc) or cast. * Patients with leg trauma, fracture, above or below knee amputation, or other condition in which compressing on the calf is medically inappropriate or not possible. * Patients unable to provide informed written consent.
Where it's running
-
Mayo Clinic
Rochester, Minnesota, United States Recruiting
Study contacts
- Principal investigator: Damon Houghton, MD — Mayo Clinic
- Study coordinator: David Liedl
- Email: liedl.david@mayo.edu
- Phone: 507-266-6717
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
TRiP-cast score test in adults with acute lower-limb injuries requiring immobilization
This study tests whether the TRiP(cast) score can predict risk of blood clots in adults with acute lower-limb injuries treated as outpatients.
-
Comparing ClotTriever vs. aspiration thrombectomy for acute iliofemoral DVT
This study tests whether the ClotTriever System clears clot better than aspiration thrombectomy in adults with acute iliofemoral deep vein thrombosis.
-
Profunda Femoris Vein Thrombosis Clearance to Improve Outcomes of Endovascular Treatment
This trial tests whether clearing a blockage in the profunda femoris vein during endovascular treatment helps keep the iliofemoral vein open and reduces post-thrombotic syndrome in adults with acute iliofemoral DVT.
-
Collecting ultrasound images to improve DVT detection
This study is collecting ultrasound images from patients suspected of having deep vein thrombosis to see if using these images can help train an AI to detect DVT more accurately.
-
Using apixaban to treat blood clots in cancer patients with low platelet counts
This study is testing if a new dose of the blood thinner apixaban can safely help cancer patients with low platelet counts manage blood clots without causing more bleeding.
-
Using machine learning to quickly detect deep vein thrombosis
This study is testing if a new machine learning tool can help doctors quickly rule out deep vein thrombosis in patients without needing an ultrasound every time.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.