Transcatheter Aortic Valve Replacement (TAVR) is a minimally invasive surgical procedure used to replace a narrowed aortic valve that fails to open properly, known as aortic stenosis. This technique allows for the replacement of the heart valve via a catheter inserted through a blood vessel, typically in the leg, rather than requiring open-heart surgery. TAVR is especially beneficial for patients who are at high risk for traditional surgery due to age or other health issues.