<qa>  What is the aim of the study?The aim of the study is to elucidate the anatomical location of the conduction pathology of a TAVI induced LBBB. This could impact valve design and placement and thereby reduce the number of new LBBB induced by TAVI in the future. Furthermore, finding predictors for progression to a high degree AV block in the followup and thus an indication for permanent pacemaker could improve management of postoperative conduction abnormalities and prevent the risk of bradyarrhythmic death. 