%0 Journal Article %T Preface %A Minoru Tabata %J Archive of "Annals of Cardiothoracic Surgery". %D 2017 %R 10.21037/acs.2017.09.08 %X Since the first in-man case was performed in 2002, transcatheter aortic valve implantation (TAVI) has been increasingly utilized, with rapid advancement in imaging and device technologies, implantation techniques and perioperative management. 30-day/in-hospital mortality and major complications of TAVI have dramatically decreased over this decade, and 5-year durability of transcatheter heart valves seems promising. TAVI has provided a new opportunity for curative treatment for inoperable or high-risk patients with severe aortic stenosis. Recent randomized controlled studies have shown excellent outcomes of TAVI in intermediate-risk patients and even in low-risk patients. The success of TAVI for aortic stenosis is likely to expand the indication of transcatheter therapy to aortic insufficiency, mitral and tricuspid valve diseases %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5639229/