An interventional study of Treatment with CSI atherectomy device in Peripheral Vascular Diseases and Critical Limb Ischemia, sponsored by Arkansas Heart Hospital. Terminated at 2 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-06-27.
Sponsored by Arkansas Heart Hospital · Not applicable, Interventional, and Treatment
This is a prospective, nonrandomized, single-arm study using CSI Orbital Atherectomy System in patients with PAD (total occlusions or significant stenosis). Patients will be enrolled if they have claudication and/or critical limb ischemia, and identifiable PAD disease with moderate to severe calcification on Computer Tomography Angiogram (PCA) or peripheral angiogram requiring percutaneous peripheral intervention (PPI).
Orbital atherectomy (OA) is one of the most commonly used modalities for the treatment of obstructive femoral-popliteal PAD, especially in patients with large and calcified atherosclerotic plaques, either as stand alone or with subsequent drug-coated balloon angioplasty or stent implantation. These atherectomy procedures were primarily guided by peripheral angiography which has significant resolution limitations in regards to the plaque morphology and characteristics such as extent of calcification, and how deep the cuts are made in the vessel wall.
Optical coherence tomography (OCT) has recently emerged as a novel imaging modality. OCT imaging has been used both in coronary as well as in peripheral circulation extensively with no significant device related adverse effects. Previous research has shown the feasibility and safety of OCT use for peripheral artery imaging and its use in plaque characterization. The hypothesis for this study is that; use of diamond back atherectomy device will lead to effective removal of plaque in moderate to heavily calcified arteries without damaging deep into the adventitia or EEL or the adjacent healthy vessel wall and thus will lead to a favorable vascular response during follow up.
Patient with lower extremity claudication and PAD due to significant SFA or below the knee stenosis (50%≤99%) or total occlusions (100%) that affects the quality of life despite medical therapy.
Evidence of significant SFA or below the knee disease involving the most symptomatic limb by noninvasive vascular testing with the use of the following:
Exclusion Criteria:
Planned amputation.
removal of the plaque from vessel wall by optical coherence tomography
Device: Treatment with CSI atherectomy device
Following peripheral angiography, patients with significant SFA or below the knee artery disease (≥ 50%) or total occlusions (100%) will have a baseline OCT imaging of the target vessel and the lesion be treated with proper size CSI burr. Repeat OCT imaging will be performed after CSI. Drug eluting balloon angioplasty may be performed in discretion of the operator. If DEB is used, a final OCT imaging will be performed to assess lesion expansion and possible dissections. Balloon sizing will be based on 1:1 vessel ratio with the length covering from minimally diseased distal segment to minimally diseased proximal segment. We will try to avoid use of stents.
Change in luminal area gain, measured in mm, in treated segment of the vessel wall
Luminal area gain in the treated segment of the vessel wall between pre-and post-atherectomy OCT images.
Time frame: Baseline and 7 month
Atherectomy OCT Analysis-plaque volume
Changes in calcified total plaque volume as compare to baseline.
Time frame: 0 and 7 months
Atherectomy OCT Analysis-fibrous tissue
Changes in fibrous tissue amount as compared to baseline
Time frame: 0 and 7 months
Atherectomy OCT Analysis- new dissections
Number of new dissections present at 7 months as compare to baseline
Time frame: 0 and 7 months
Atherectomy OCT Analysis-new injuries
Percentage of cross-sectional images with new injury to the adventitia or EEL as compared to baseline
Time frame: 0 and 7 months
Atherectomy images Analysis-Luminal area loss
Change in Luminal area loss as measure by calcified plaque volume as well as by the presence of lipid and fibrous tissue as compared to baseline
Time frame: 0 and 7 months
Atherectomy images Analysis-persistent dissections
Percentage of cross-sectional images with persistent dissections as compared to baseline
Time frame: 0 and 7 months
Plan to share: No
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This study is terminated, as verified in Jun 2019. You cannot join it, but the record below documents what was studied.
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Arkansas Heart Hospital