Bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction. Part 1: how to evaluate patients for BASILICA.

Coronary obstruction is a life-threatening complication of transcatheter aortic valve replacement. BASILICA (bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction) seems to be an effective method for preventing that complication. In this article, we describe how to assess patients for their risk of coronary obstruction and how to evaluate for BASILICA, including defining coronary cusp fluoroscopic projections and analysing coronary ostia eccentricity.