Coronary Angiography Clinical Trial
Official title:
Calcium Reduction by Orbital Atherectomy in Western Europe
In calcified lesions, optimal stent placement and expansion may prove to be challenging. Lesion preparation is necessary to facilitate optimal stenting in calcified lesions, for which orbital atherectomy can used. Therefore the aim of this study is to: 1. Show that orbital atherectomy effectuates optimal stent expansion 2. Investigate the mechanics of lesion preparation when using orbital atherectomy Patients presenting with a significant and severely calcified lesion in need of orbital atherectomy will undergo optical coherence tomography guided orbital atherectomy and stent placement.
The Diamondback 360° Coronary Orbital Atherectomy System (OAS) (Cardiovascular Systems Inc., St. Paul,MN,USA) is a percutaneous device indicated to modify calcified lesion in order to facilitate stent delivery in patients with severely calcified coronary artery disease (CAD). As of to date, detailed sequential intravascular imaging data unraveling the exact calcium modifying effect of orbital atherectomy (OA) prior to stent placement in vivo, are lacking. The aim of this, international, multicenter, prospective and observational single arm study is to understand the mechanism of action of OA for the treatment of de novo, severely calcified coronary lesions priot to stent placement using optical coherence tomography (OCT) and to assess stent expansion, based on OCT derived minimal stent area. The study population consists of patients undergoing percutaneous coronary intervention of a severely calcified coronary lesion in need of OA to enable proper stent placement and expansion. A total of 100 patients will be enrolled. All patients will undergo peri-procedural imaging using OCT and the aim is to obtain data for at least 50 patients with OCT before and after OA and after stenting. ;
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