Abstract 18940: Severity and Pattern of Aortic Valve Calcification by Cardiac CT Does Not Predict the Need for Permanent Pacemaker Implantation or Development of Left Bundle Branch Block After Transcatheter Aortic Valve Replacement

Introduction: Transcatheter aortic valve implantation (TAVI) with self-expanding prosthetic aortic valve (CoreValve) has been noted to have an increased incidence of new persistent left bundle branch block (LBBB) and conduction abnormalities requiring permanent pacemaker implantation (PPI). Hypothesis: We hypothesized that the severity and/or pattern of aortic valve calcification is directly associated with development of LBBB or conduction abnormalities after CoreValve implantation requiring PPI. Methods: We performed a prospective study to evaluate the relationship between aortic valve calcification and clinical outcomes after CoreValve implantation between 2009 and 2016. Prior to CoreValve implantation, a cardiac CT was performed for quantitation of aortic valve calcification by Agatston score (AgS). Total AgS as well as AgS for each aortic valve cusp was measured. We previously described association of aortic valve calcification and paravalvular aortic regurgitation after CoreValve implantation. In th...