About this trial
The purpose of this study is to determine if IVUS use, as compared to angiography alone, prevent major adverse limb events (MALE) or binary restenosis (a greater than 50% re-narrowing of the treated artery) in adult patients who have CLTI and are undergoing percutaneous revascularization.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Scheduled to undergo percutaneous revascularization, AND
Informed consent
Imaging evidence of an obstructive or occluded lesion (> 70%) in the infraiguinal circulation (e.g. femoral, popliteal, or infrapopliteal circulation) using angiography, ultrasound, computed tomography, or magnetic resonance imaging that is responsible for CLTI of the index limb
An infrapopliteal lesion must be located in the proximal 2/3 of native infrapopliteal vessels, with a vessel diameter of > 2.5mm by investigator visual assessment.
Disqualifiers
The presence of anatomic or comorbid conditions or other medical, social, or psychological conditions that, in the investigator's opinion, could limit the potential participant's ability to participate in the trial or to comply with the follow-up requirements.
The presence of any medical conditions precluding percutaneous revascularization
The subject has previously had or requires open surgical revascularization involving the vessel containing the target lesion of the ipsilateral extremity.
The subject is bedridden or unable to walk (with assistance is acceptable).
Trial design
Parallel
Treatments tested in this trial
IVUS-guided strategy
Procedure/SurgeryPercutaneous revascularization will be performed using intravascular ultrasound. The operators will follow instructions to modify arteries hardened by calcium and use IVUS to optimize the equipment (balloon and stents) used to unblock the artery.
Treatment groups
Trial outcomes
Primary outcomes
Time-to-first occurrence of MALE
Defined as unplanned above ankle amputation of the index limb or clinically driven target lesion revascularization, or target-lesion binary restenosis, defined as \> 50% stenosis on imaging throughout follow-up.
Secondary outcomes
The composite of all-cause mortality, MALE, or target-lesion binary restenosis
MALE
All-cause mortality
Unplanned above-ankle amputation of the index limb
Sponsors and contacts
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