Immediate outcomes of transcatheter aortic valve implantation in patients with horizontal aorta

Background: Transcatheter aortic valve implantation (TAVI) is an effective and safe procedure for severe aortic stenosis. Increased aortic root angulation is an important anatomical feature that may cause technical difficulties and negatively affect immediate and long-term outcomes. Objective: To evaluate immediate outcomes of TAVI in patients with increased aortic root angulation. Methods: Our retrospective single-center study included 412 patients with severe aortic stenosis who underwent TAVI using self-expanding bioprostheses from 2015 to 2022. Patients with aortic root angulation > 49° were included in group 1 (n = 200), and those with aortic root angulation 49° angle, we observed moderate aortic regurgitation significantly more often (7.4% vs 0.0%, P = .010) and technical success significantly less often (90.1% vs 98.9%, P = .010) compared with a similar subgroup with a 49° negatively affected the technical success of TAVI only in patients with the first-generation CoreValve prostheses. Independent predictors of technical failure in TAVI were the aortic root angle, no postdilation, indexed mass of the left ventricular myocardium, and higher implantation relative to the aortic annulus.