1. Cardiology Division, Department of Medicine, University of Verona, Italy 2. Cardiovascular Department, Humanitas Gavazzeni, Bergamo, Italy 3. Division of Cardio-Thoracic Intensive Care; Department of Surgery, University of Verona, Italy 4. Cardiology Division,Department of Medicine, University of Verona, Italy, Italy
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“Chimney” and “BASILICA” techniques (1,2), have been developed to offer safe prevention of coronary artery occlusion (CAO) in case of valve-in-valve transcatheter aortic valve implantation (VIV-TAVI) in degenerated surgical bioprosthesis, but sometimes these lead to unnecessary stenting, or may simply not be performed because of unfavourable anatomy. Moreover, when they are not implemented, a reassuring coronary angiogram after valve implantation may hide the risk of delayed CAO, which could occur after the removal of protective wires from coronaries (3).
This study aims to evaluate the feasibility and usefulness of intravascular ultrasound (IVUS) analysis of the coronary ostia to predict and prevent CAO after VIV-TAVI.