Impact of valvular annulus size on short-term prognosis in TAVI patients

Abstract Background Transcatheter aortic valve intervention (TAVI) is an established treatment modality for severe aortic stenosis (AS) in older and high-risk patients (1). Accurate preoperative sizing of aortic annulus (AA) is important for appropriate transcatheter aortic valve (TAV) selection and avoidance of periprocedural complications (2,3). Aim The aim of our study was to determine whether the size of aortic annulus in TAVI patients is associated with short-term (30 days) mortality and major adverse cardiovascular events (MACE) which included bleeding, stroke, total atrioventricular (AV) block requiring permanent pacemaker implantation and significant paravalvular leak (PVL). Methods We included patients who underwent TAVI in our institution from July 2021 to January 2025. All patients underwent preoperative transthoracic echocardiogram (TTE) to evaluate severity of AS, its haemodynamic effects, and AA size. Computed tomographic angiography (CTA) was used to confirm dimensions of AA. We classified patients into small (