Short-frame BEV preferred ○Coronary artery disease; ○Large aortic annulus; ○Horizontal aorta; ○Pre-existing conduction abnormalities increasing risk of post-TAVI permanent pacing.

Tall-frame SEV preferred Intolerance to rapid pacing; Peripheral vascular disease; Aortic annular calcification; ViV procedures; Risk of patient–prosthesis mismatch, and small aortic annuli.