Transcatheter aortic valve replacement (TAVR) or transcatheter aortic valve implantation (TAVI) is a minimally invasive procedure whereby a new valve is inserted without removing the old, diseased valve to treat severe aortic valve disease called aortic stenosis (AS). The procedure was initially developed for very high-risk patients who could not withstand major surgery, but in recent years has been extended to treat other suitable lower-risk patients as well.
Bioprosthetic aortic valves made from pig or cow heart tissue used in TAVR
Fluoroscopic X-ray image of bioprosthetic aortic valve implantation deployment showing expanded metal mesh scaffolding which keeps the valve in place
