Coronary Artery Calcification Clinical Trial
— SCALPOOfficial title:
Shockwave Induced Attenuation of Calcified Plaques Quantified With OCT
NCT number | NCT05973994 |
Other study ID # | 75/21 |
Secondary ID | |
Status | Recruiting |
Phase | |
First received | |
Last updated | |
Start date | February 21, 2022 |
Est. completion date | June 30, 2024 |
The goal of this observational, prospective, multicenter study is to explore local action of coronary calcium fragmentation exerted by endovascular lithotripsy by images acquired with OCT, in patients with coronary artery calcifications responsible for significant stenosis, candidate to PCI. The main question it aims to answer, is the ability of Shockwave System to reduce calcium density in the Region of Interest (ROI) of the vessel wall.
Status | Recruiting |
Enrollment | 30 |
Est. completion date | June 30, 2024 |
Est. primary completion date | December 31, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 100 Years |
Eligibility | Inclusion Criteria: - Subjects with native coronary artery disease (including stable or unstable angina and silent ischemia) suitable for PCI - Left ventricular ejection fraction (LVEF) =35% as measured prior to enrollment - eGFR =45 ml/min (Cockroft-Gault, MDRD) - Troponin must be less than or equal to the upper limit of lab normal value within 24 hours prior to the procedure or if troponin is elevated, concomitant CK must be normal - Ability to tolerate dual antiplatelet therapy (i.e. aspirin and clopidogrel, prasugrel, or ticagrelor) for at least 6 months (for patient not on oral anticoagulation) and single antiplatelet therapy for life - The target lesion must be a de novo coronary lesion that has not been previously treated with any interventional procedure - Single de novo target lesion stenosis of LAD, RCA or LCX (or of their branches) with stenosis of =70% and <100% or stenosis =50% and <70% (visually assessed) with evidence of ischemia via positive stress test, or fractional flow reserve value =0.80, or iFR <0.89 or IVUS or OCT minimum lumen area =4.0 mm² - Reference vessel must have 2.5 mm - 4.0 mm diameter and = 30 mm length - Evidence of calcification at the lesion site assessed by angiography, with fluoroscopic radio-opacities noted without cardiac motion prior to contrast injection involving both sides of the arterial wall in at least one location and total length of calcium of at least 15 mm and extending partially into the target lesion, or by IVUS or OCT, with presence of =270 degrees of calcium on at least 1 cross section - Planned treatment of single lesion for every target vessel - Ability to pass a 0.014" guide wire across the lesion - The target vessel must have a TIMI flow 3 at baseline Exclusion Criteria: - Left ventricular ejection fraction (LVEF) <35% - Subject is pregnant or nursing - eGFR <45 ml/min (Cockroft-Gault, MDRD) or chronic dialysis - Untreated pre-procedural haemoglobin <9 g/dL or intention to refuse blood transfusions if one should become necessary - Patient has a platelet count <100,000 cells/mm3 or >750,000 cells/mm3 - Patient has a known allergy to protocol required medications (clopidogrel, thienopyridines, aspirin, contrast media) that cannot be adequately premedicated - Uncontrolled diabetes defined as a fasting hyperglycaemia >200 mg/dL or HbA1c greater than or equal to 10% - Patient has had a cerebrovascular accident (CVA) or transient ischemic attack (TIA) within the past 6 months, or has any permanent neurologic defect that may cause non-compliance with the protocol - Patient has an active peptic ulcer or active gastrointestinal (GI) bleeding - Patient has a history of coagulopathy - Subject is participating in another research study involving an investigational agent (pharmaceutical, biologic, or medical device) that has not reached the primary endpoint - Subjects with a life expectancy of less than 1 year - Subject refusing or not a candidate for emergency coronary artery bypass grafting (CABG) surgery - Planned use of atherectomy, scoring or cutting balloon, or any investigational device other than lithotripsy - Stent implantation in the target vessel within the last year or a stent within 10 mm of the target lesion - Definite or possible thrombus (by angiography or intravascular imaging) in the target vessel - Angiographic evidence of a dissection in the target vessel at baseline or after guidewire passage |
Country | Name | City | State |
---|---|---|---|
Italy | University of Rome Tor Vergata - Policlinico | Roma | Rome |
Lead Sponsor | Collaborator |
---|---|
University of Rome Tor Vergata |
Italy,
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* Note: There are 76 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Reduction of calcium density in the Region of Interest (ROI) of the vessel after lithotripsy treatment | Calcium density is measured as delta pixel-density between calcific lesions images before and after lithotripsy at OCT acquisition | five-ten minutes | |
Secondary | Reduction of stent malapposition after intracoronary lithotripsy application | Sten malapposition is measured as the distance between the abluminal surface of the strut and the luminal surface of the artery wall in the frames of lesion acquired by OCT after stent implantation. | five minutes after stent impantation | |
Secondary | Incidence of acute vessel dissection and acute stent thrombosis or subacute vessel thrombosis after index procedure | Safety endpoint | one, six months |
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