The PROGRESS Trial: A Prospective, Randomized, Controlled Trial to Assess the Management of Moderate Aortic Stenosis by Clinical Surveillance or Transcatheter Aortic Valve Replacement

Key Inclusion Criteria: 1. 65 years of age or older at time of randomization 2. Moderate aortic stenosis 3. Subject has symptoms or evidence of cardiac damage/dysfunction 4. The subject or subject's legal representative has been informed of the nature of the study, agrees to its provisions, and has provided written informed consent. Key Exclusion Criteria: 1. Native aortic annulus size unsuitable for the THV 2. Anatomical characteristics that would preclude safe transfemoral placement of the introducer sheath or safe passage of the delivery system 3. Aortic valve is unicuspid or non-calcifi…