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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05739149
Other study ID # 21-012021
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date December 1, 2023
Est. completion date December 2024

Study information

Verified date April 2024
Source Mayo Clinic
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this research is to explore the use of high-resolution microvessel ultrasound imaging system to look for scarring and to monitor wound healing and to see if treatment affects the amount of tiny vessels and circulation around the wound.


Recruitment information / eligibility

Status Recruiting
Enrollment 10
Est. completion date December 2024
Est. primary completion date December 2024
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Chronic wound in the course of diabetic foot ulcers and/or lower extremity venous ulcers with duration of at least 6 weeks and the wound surface not less than 2 sq. cm and not greater than 15 sq. cm, without evidence of active infection of the wound at the time of qualification to participate in the study - Meets criteria for stalled chronic wound defined as less than 50% reduction in wound size after 30 days of standard of care management. - For chronic venous ulcers, ultrasound demonstrates venous reflux >0.5 seconds - Satisfactory blood glucose control - fasting not more than 110 mg%, HbA1c <6.5% - Satisfactory blood supply to the wound verified by the measurement of the oxygen level of the foot tissue (TCPO2 > 30mmHg) in patients with neuropathic etiology of diabetic foot syndrome - In the case of the patients with the wounds of ischemic component, the condition for qualification is a clinical improvement of the limb's blood supply as a result of the revascularization procedure documented by ultrasound. - Ankle-brachial index (ABI) = 0.8 Exclusion Criteria: - Acute wound with duration less than 6 weeks - Evidence of active infection or on antibiotics - Smoker - For chronic venous ulcers, ultrasound demonstrates venous reflux <0.5 seconds - Unsatisfactory blood glucose control - fasting more than 110 mg%, HbA1c <6.5% - Poor blood supply to the wound verified by the measurement of the oxygen level of the foot tissue (TCPO2 < 30mmHg) in patients with neuropathic etiology of diabetic foot syndrome - Ankle-brachial index (ABI) < 0. - Pregnancy - Known allergy to lidocaine

Study Design


Intervention

Diagnostic Test:
Microvessel Ultrasound Examination
Ultrasound to evaluate microvessel formation and elastography or stiffness of the tissues around the ulcer and in an area of unaffected skin
Procedure:
Skin Biopsy
Dermatology will remove a small piece of skin from the affected ulcer area and control skin

Locations

Country Name City State
United States Mayo Clinic Minnesota Rochester Minnesota

Sponsors (1)

Lead Sponsor Collaborator
Mayo Clinic

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Microvessel imaging Number of subject's microvessel imaging results that correlate to the standard of care clinical assessment of wound healing 3 months
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