Midterm Outcomes of Balloon- and Self-Expandable Transcatheter Heart Valves in Patients with an Extra-Small Aortic Annulus

Objective: Transcatheter aortic valve implantation (TAVI) has become the standard treatment for older or high-risk surgical candidates with severe symptomatic aortic stenosis. However, reports on the mid-term outcomes of TAVI in patients with small annuli are limited. This study aimed to comprehensively evaluate the procedural success, hemodynamic performance, and midterm outcomes of TAVI using balloon-expandable transcatheter heart valves (BEVs) and self-expandable transcatheter heart valves (SEVs) in this population.