Overcoming the transcatheter aortic valve replacement Achilles heel: coronary re-access
Transcatheter aortic valve replacement (TAVR) is an alternative to surgical aortic valve replacement (SAVR) for the treatment of symptomatic severe aortic stenosis (AS). Coronary artery disease (CAD) is common in patients with severe AS. As the indications for TAVR extend to lower risk patients with longer life expectancy and as CAD is a progressive condition, coronary angiography will become increasingly common in patients who have had a previous TAVR. Coronary artery re-access after TAVR may be challenging but is possible in most cases. Commissural alignment of the prosthesis with the native coronary ostia plays an important role in successful coronary re-access. Coronary artery obstruction is a potentially devastating complication of TAVR, particularly in valve-in-valve procedures. In the present keynote lecture, we review techniques used to mitigate the risk of coronary obstruction, as well as catheter selection and strategies for selective coronary artery engagement for specific transcatheter aortic valve (TAV) bioprostheses.