Radiofrequency Ablation vs Laser Ablation of the Incompetent Greater Saphenous Vein

Study Overview
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Brief Summary
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The aim of this study is to perform a randomized, prospective trial comparing the two current methods of treatment for chronic venous insufficiency, in an effort to evaluate complications and outcomes for each method, and ultimately, to see if one is superior to the other.

Detailed Description
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Chronic venous insufficiency (CVI) is estimated to affect 25 million Americans. This condition leads to varicose veins, aching, fatigue, swelling, ulcerations, and bleeding in the lower extremities. The most common cause is a refluxing or incompetent Greater Saphenous Vein (GSV). This condition results in pooling of deoxygenated blood in the lower extremities rather than successful transport of the blood back to the heart and lungs. The historical treatment has been to surgically remove or 'strip' the GSV so that blood is rerouted through the healthier deep veins. A less invasive treatment option, Endovenous Thermal Ablation, has emerged over the last decade and has virtually replaced stripping. This involves advancing a catheter under ultrasound guidance through the GSV and then advancing a laser fiber or radiofrequency probe through the catheter. These devices then produce the energy to destroy the vein as the catheters are slowly pulled back. While both radiofrequency ablation and laser ablation are accepted treatments, neither technology has been definitively proved to have fewer complications or superior results. This is in part because very few practices have the ability to make a head to head comparison between the two technologies and must choose one or the other secondary to financial constraints. The aim of this study is to perform a randomized prospective trial comparing the two modalities so that more definitive information to evaluate complications and outcome can be obtained and then recommendations on which, if either, technology is superior can be made.

Official Title
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Radiofrequency Ablation vs Laser Ablation of the Incompetent Greater Saphenous Vein: A Prospective Randomized Trial

Conditions
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Chronic Venous Insufficiency

Intervention / Treatment
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* Procedure: Ablation of the Incompetent Greater Saphenous Vein
* Device: ClosureFAST radiofrequency catheter
* Device: EVLT 980nm diode laser system


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients with symptomatic chronic venous insufficiency. Patients in whom endovenous thermal ablation is clinically indicate. Have previously undergone at least 6 weeks of conservative treatment with compression stockings (unless they have venous ulcers, recurrent phlebitis, or bleeding varices). Have venous disease that meets CEAP clinical class 2 through 6. Have symptoms secondary to Greater Saphenous Vein insufficiency defined as reverse flow in the saphenous vein >0.5 seconds after calf compression or while standing. Exclusion Criteria: Have previously undergone surgery, EVTA, or phlebectomy in that extremity (exclusive of spider vein injections or other cosmetic surface procedures). Have a history of DVT. Have a history of hypercoaguability disorder. Are pregnant or breastfeeding. Are nonambulatory.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Radiofrequency Ablation<br>Device: ClosureFAST radiofrequency catheter (VNUS Medical Technologies Inc, San Jose, CA). Patients will have the intervention, ablation of the incompetent greater saphenous vein, using this device. | Procedure: Ablation of the Incompetent Greater Saphenous Vein<br>* For each patient, the Greater Saphenous Vein (GSV) will be accessed just below the knee. After liberal use of anesthesia, the patient will undergo an ablation of the GSV. Half the patients will have this procedure performed using the Laser Ablation device and half will be treated using the Radiofrequency Ablation device. They will be randomly assigned to treatment.<br>Device: ClosureFAST radiofrequency catheter<br> <br> |
| Active Comparator: Laser Ablation<br>Device: EVLT 980nm diode laser system (Angiodynamics, Queensbury, NY). Patients will have the intervention, ablation of the incompetent greater saphenous vein, using this device. | Procedure: Ablation of the Incompetent Greater Saphenous Vein<br>* For each patient, the Greater Saphenous Vein (GSV) will be accessed just below the knee. After liberal use of anesthesia, the patient will undergo an ablation of the GSV. Half the patients will have this procedure performed using the Laser Ablation device and half will be treated using the Radiofrequency Ablation device. They will be randomly assigned to treatment.<br>Device: EVLT 980nm diode laser system<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants Without Recurrent Clinical Symptoms of an Incompetent Greater Saphenous Vein After Treatment. |  | Annual follow up, up to 75 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Incidence Rate of Acute Complications | Number of acute complications at one and 6 weeks post intervention | up to 6 weeks post intervention | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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chronic venous insufficiency, varicose vein, greater saphenous vein