The objective of this clinical study is to evaluate the immediate and long-term (up to 12 month) safety and effectiveness of a Nitinol Self-Expanding Paclitaxel-Eluting stent for the treatment of patients with critical limb ischemia (i.e. rest pain or non-healing foot ulcers) due to the presence of arterial lesions in the below-the-knee arteries of maximally 50mm long.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
70
Self-Expanding Paclitaxel-Eluting stent
Imelda Hospital
Bonheiden, Antwerp, Belgium
UZA
Edegem, Antwerp, Belgium
RZ Heilig-Hartziekenhuis
Tienen, Antwerp, Belgium
OLV Ziekenhuis
Aalst, East-Flanders, Belgium
AZ Sint-Blasius
Primary patency
Primary patency rate at 6 months, defined by duplex ultrasound measurement of peak systolic velocity ratio ≤2.0 at the target lesion(s) with no clinically-driven reintervention within the treated segment, verified by Core Lab
Time frame: 6 months
Primary patency
Primary patency at 12 months, defined as absence of restenosis (≥50% stenosis) or occlusion within the originally treated lesion based on angiography, verified by Core Lab
Time frame: 12 months
Technical success
Technical success, defined as the ability to cross and dilate the lesion to achieve residual angiographic stenosis no greater than 30% by visual assessment
Time frame: procedure (day 0)
Procedural success
Procedural success, defined as the ability to achieve \<30% final residual stenosis of the target lesion by visual estimation (angio) and the absence of any in-hospital Major Adverse Events (MAE, defined as clinically-driven target vessel revascularization, major unplanned amputation of the treated limb, and all-cause mortality)
Time frame: Procedure (day 0)
MAE (Major Adverse Event)
MAE at 1, 6 and 12 months Major Adverse Events (MAE) include (but are not limited to) * death * myocardial infarction * stroke * emergent surgical revascularization of the target vessel * repeat vascularization of the target vessel * major amputation * bleeding complication requiring transfusion
Time frame: 1, 6 and 12 months
SAE (Serious Adverse Event)
Other SAEs at discharge, 1, 6 and 12 months A Serious Adverse Event (SAE) is defined as an Adverse Event which: * results in death * is life-threatening * results in persistent or significant disability/incapacity * requires in-patient hospitalization or unduly prolonged hospitalization. * necessitates an intervention to prevent a permanent impairment of a body function or permanent damage to a body structure. * is a congenital abnormality/birth defect, a fetal distress or fetal death * results in malignancy
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Dendermonde, East-Flanders, Belgium
Time frame: discharge, 1, 6 and 12 months
Improvement of Rutherford classification
Improvement in Rutherford Clinical Category at 12 months, defined as an improvement in clinical status indicated by a decrease of one or more in Rutherford Clinical Category at 12 months compared to baseline, that is attributable to the treated limb (in cases of bilateral disease)
Time frame: 12 months
Improvement in Ankle-Brachial Index
Improvement in Ankle-Brachial Index at 12 months, defined as an increase in the ankle-brachial index (ABI) at 1 year compared to baseline in subjects with compressible arteries and baseline ABI\<0.9
Time frame: 12 months
Primary Patency
Primary patency rate at 1 and 12 months, defined by duplex ultrasound measurement of peak systolic velocity ratio ≤2.0 at the target lesion(s) with no clinically-driven reintervention within the treated segment
Time frame: 1 and 12 months
Secondary patency
Secondary patency rate at 1, 6 and 12 months, defined by duplex ultrasound peak systolic velocity ratio ≤2.0 maintained by repeat percutaneous intervention
Time frame: 1, 6 and 12 months
Limb salvage rate
Limb salvage rate, defined as 1 minus major amputation rate (major amputation is defined as at or above ankle, as opposed to minor amputation being at or below metatarsus preserving functionality of foot
Time frame: Procedure, 1, 6 and 12 months
Target Lesion Revascularisation
Target lesion revascularization (TLR), defined as a repeat intervention to maintain or re-establish patency within the region of the treated arterial vessel plus 5mm proximal and distal to the treated lesion edge.
Time frame: Procedure (day 0), 1, 6 and 12 months