Individual Patient Data Analysis of Viabahn for Peripheral Arterial Disease

Rijnstate Hospital977 enrolled

Overview

To evaluate the effectiveness of the VSX device in pre-determined patient populations to understand the patient characteristics that impact outcomes.

Rationale: Studies on the efficacy of self-expanding covered stents for the treatment of patients with superficial femoral artery (SFA) occlusive disease have mainly focused on stent patency. Subgroup analysis was often not feasible, related to small sample sizes. This pooled analysis of individual patient-level data provides larger sample sizes and a more heterogeneous population, which allows for the ability to perform subgroup analyses to identify patients that will most benefit from VSX treatment. The current analysis will provide insights into the effectiveness of the VSX device for specific subgroups. Objective: To evaluate the effectiveness of the VSX device in pre-determined patient populations to understand the patient characteristics that impact outcomes. Study design: Multicenter retrospective individual patient data meta-analysis. Study population: Patients treated with a VSX device for de novo or restenotic lesions of the superficial femoral artery and previously enrolled in a prospective VSX study whom were treated for SFA disease with the latest generation heparin-bonded Viabahn, and published in peer reviewed journals. Main study parameters/endpoints: The primary study parameter is primary patency at 12-months. In addition, for all subjects and for subgroups as described further below, the following secondary endpoints will be evaluated through follow-up: primary patency at 24 months, primary assisted patency, secondary patency, freedom from Target Lesion Revascularization (TLR) at 12 and 24 months, clinical Improvement, minor and major amputation, mortality. The following subgroup analysis will be performed if sufficient data are available: critical limb threatening ischemia patients (Rutherford 4-6), patients with intermittent claudication (Rutherford 1-3), chronic total occlusions, by gender, by number of runoff vessels, lesion length, TASC II lesion classification, calcified lesions, by device diameter.

Study Type

OBSERVATIONAL

Enrollment

977

Conditions

Peripheral Vascular Diseases

Interventions

Viabahn implantedDEVICE

An individual patient data analysis obtained from databases used in prospective studies that published results of patients treated with the latest generation heparin-bonded Viabahn in the femoropopliteal artery.

Eligibility

Sex: ALL

Medical Language ↔ Plain English

Inclusion Criteria: 1. Patient was enrolled and treated with the GORE® VIABAHN® Endoprosthesis with Heparin Bioactive Surface device in a Gore-sponsored or physician-sponsored study for de novo or restenotic lesions of the femoropopliteal artery. 2. Lesions ≥10 cm in length and TASC C or D classification will be included 3. Patient-level data can be obtained and pooled with other studies Exclusion Criteria: 1. Patient was not formally enrolled in their corresponding study (e.g., training cases) 2. Patient was enrolled for treatment of in-stent restenotic lesions. 3. Patient has incomplete or missing data that does not allow for analysis. 4. Case reports (n\<10 patients)

Locations (1)

Rijnstate

Arnhem, Netherlands

Outcomes

Primary Outcomes

Primary patency

Primary patency is defined as no evidence of restenosis or occlusion within the originally treated lesion based on color-coded duplex sonography (CDUS, PSVR \< 2.5) or no angiographic evidence of stenosis \> 50% if CDUS is uninterpretable or unavailable.

Time frame: at 12 months.

Secondary Outcomes

Primary patency

Time frame: at 24 months

Primary assisted patency

Primary assisted patency is defined as flow through the treated lesion with or without repeat percutaneous intervention completed prior to complete vessel occlusion.

Time frame: 12 and 24 months

Secondary patency

Secondary patency is defined as patency in the target lesion maintained by repeat intervention after complete occlusion of the treated arterial segment.

Time frame: 12 and 24 months

Freedom from Target Lesion Revascularization (TLR)

Freedom from revascularization of the treated lesion after either restenosis or occlusion by means of a percutaneous vascular intervention, surgical by-pass, thrombolysis, or other such invasive means.

Time frame: 12 and 24 months

Clinical Improvement

Clinical improvement is defined as at least one-group improvement in Rutherford Classification compared to baseline.

Time frame: 12 and 24 months

Data from ClinicalTrials.gov

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