Cardiac Reversibility and Survival After Transcatheter Aortic Valve Implantation in Patients With Low‐Gradient Aortic Stenosis

Background Prognostic implications of transcatheter aortic valve implantation (TAVI) in low‐gradient (LG) aortic stenosis (AS) remain controversial. The authors hypothesized that differences in cardiac functional recovery may solve this ongoing controversy. The aim was to evaluate clinical outcomes and the response of left ventricular (LV) function following TAVI in patients with LG AS. Methods and Results This multicenter retrospective study included 1742 patients with severe AS undergoing TAVI between January 2015 and March 2019. Patients were subdivided into low‐flow (LF) LG, normal‐flow (NF) LG, LF high‐gradient, and NF high‐gradient AS groups according to the mean gradient of the aortic valve (LG