Safety and Efficacy of Endovenous Laser Ablation for the Resolution of Incompetent Perforator Veins (RELIEVE)
This trial is designed as a prospective, non randomized, single center clinical trial to determine the safety and efficacy of laser ablation of incompetent perforator veins.
Within this clinical evaluation, fifty (50) limbs will be treated with Vari-Lase ®. A duplex ultrasound will verify the presence or absence of incompetent perforator veins (IPV). In addition, the number, diameter and location of the IPVs will be determined. Limbs with IPVs which measure greater than or equal to 3mm in diameter and are located superior to the foot and distal ankle will be considered for entry into the study.
|Study Design:||Allocation: Non-Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Safety and Efficacy of Endovenous Laser Ablation for the Resolution of Incompetent Perforator Veins The RELIEVE Study|
- Primary Effectiveness Objective [ Time Frame: 6 Months ] [ Designated as safety issue: No ]The primary objective is to demonstrate the clinical effectiveness (as determined by the absence of flow within the treated incompetent perforated vein [IPV])) of endovenous laser ablation. The number of treated IPVs that are closed at 6 weeks and remain closed at 6 months.
- Primary Safety Objective [ Time Frame: 6 Months ] [ Designated as safety issue: Yes ]Safety: Evaluation of occurrence of major device-related adverse events through 6 weeks and the total at 6 months.
- Secondary Effectiveness Objective [ Time Frame: 6 Months ] [ Designated as safety issue: No ]Effectiveness: The reduction in patient symptoms and the satisfaction of the patient. Patient symptom assessment - CEAP Class, best=0 (no visible or palpable signs of venous disease) & worst=6 (Skin changes in conjunction with active ulceration), VDS, best=0 (asymptomatic) & worst=3 (unable to carry out usual activities even with compression and/or limb elevation) and VCSS, best=0 (absent) & worst=3 (severe). Patient satisfaction - modified Odom's criteria, best=excellent (I am very satisfied with the results of my laser treatment) & worst=poor (I am not satisfied with the results).
- Secondary Safety Objective [ Time Frame: 6 Months ] [ Designated as safety issue: Yes ]Safety: Incidence rate of device-related minor adverse events.
|Study Start Date:||October 2007|
|Study Completion Date:||June 2009|
|Primary Completion Date:||June 2009 (Final data collection date for primary outcome measure)|
Active Comparator: Short Catheter Delivery
Patients with duplex ultrasound documented incompetent perforator veins will be treated using a short catheter delivery system in conjunction with a Bright Tip Laser fiber.
Device: Short Catheter Delivery
For treating incompetent perforator veins of the lower extremities
Other Name: Short Catheter 42-0664-01
This is a non randomized, single center clinical investigation, evaluating a total of fifty (50) limbs for the treatment of venous stasis ulcerations using the Vari-Lase laser.
Subjects can be pre-screened utilizing standard of care data for the specified inclusion/exclusion criteria to ensure that they are eligible for treatment in the investigation. All subjects will have a mapping duplex ultrasound study in an Intersocietal Commission for the Accreditation of Vascular Laboratories (ICAVL) approved vascular laboratory. The ultrasound will verify the presence or absence of IPVs. The number, diameter, and location of the IPVs will be mapped. If the subject appears to qualify for the investigation, the subject will then be asked to give his/her written informed consent and be enrolled in the investigation. Upon satisfying all of the inclusion/exclusion criteria the subject will be accepted into the study.
After enrollment, the investigator will document the CEAP class, venous clinical severity score (VCSS), and venous disability score (VDS) in the subject's chart/medical record/source documentation for later transcription on the appropriate case report form. Digital photographs will be taken of the limb to be treated prior to treatment with the subject standing, following a standardized photography regimen.
All enrolled study participants will have a limb treated with the Vari-Lase laser manufactured by VSI. Subject preparation will be the same as for standard greater saphenous vein (GSV) or short saphenous vein, endovenous laser treatment. The initial technical success or failure of the procedure will be noted for each IPV and the pre-diameter of the IPV recorded. Multiple perforators may be treated in a single patient, as well as bilateral procedures allowed.
Follow-up duplex exams will be conducted within the first week of treatment and at 6 months. Follow-up duplex will verify patency vs. closure of IPV, and presence or absence of deep vein thrombosis (DVT) associated with that IPV. The goal is to prove successful closure of the treated IPVs veins as demonstrated by the duplex ultrasound at 6 weeks and show maintained closure of IPVs at 6 months.
Clinical examinations will occur at 2 weeks with an Associated Research Nurse Practitioner, at 6 weeks with the Medical Doctor, and at 6 months with either the Nurse Practitioner or Medical Doctor. At the 6 week visit, photos will be taken of the limb treated and there will be a reclassification of CEAP class, VDS, and VCSS.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00565604
|United States, Washington|
|Lake Washington Vascular Surgery|
|Bellevue, Washington, United States, 98004|
|Principal Investigator:||Daniel Pepper, MD||Lake Washington Vascular Surgery|