How do you determine the feasibility of doing a valve-in-valve for patients requiring AVR with index surgical aortic valve replacement?

The feasibility of doing a valve-in-valve TAVR for patients with preexisting SAVR all rests on a high-quality CT pre-planning analysis. a good high-quality study will reveal important information regarding the primary access approach for the TAVR, coronary heights, sinus widths, valve-to-coronary distance, and valve-to-sinotubular junction distances, as some of the most critical things to evaluate for feasibility. With certain criteria that are cited as reference standards, such as coronary height greater than 10 mm, valve to coronary distance greater than 4 mm, and valve to STJ also greater than 2-4 mm, these will dictate the feasibility of performing ViV outright not requiring any other consideration versus other protective mechanisms tha...