Nagura F, et al. - Because pre-procedural valvuloarterial impedance (Zva) is considered to be a predictor of mortality in patients with severe aortic stenosis (AS) undergoing transcatheter aortic valve implantation (TAVI), researchers evaluated the prognostic significance of Zva after TAVI. For this purpose, the researchers retrospectively analyzed clinical and echocardiographic data of 1,004 consecutive elderly patients (median age: 84 years; 27.5% men) who underwent TAVI for severe symptomatic AS; they calculated Zva following TAVI. They divided patients into three groups based on tertile values: the high (> 3.33; n=335), intermediate (2.49–3.33; n=334, and low Zva (< 2.49; n=335). According to findings, patients with severe symptomatic AS who underwent TAVI displayed no association of post-procedural Zva with 2-year all-cause or cardiovascular mortalities.