Transcatheter aortic valve implantation (TAVI) had similar outcomes to surgical aortic valve replacement (SAVR) in high-risk patients with severe aortic stenosis, in a study from Switzerland. Both procedures were much more effective than medical therapy. Patients with severe aortic stenosis were consecutively enrolled into a prospective single centre registry. There were 442 patients, median age 83 years. A total of 78 patients were allocated to medical treatment, 107 to SAVR, and 257 to TAVI.