PROGRESS: Management of Moderate Aortic Stenosis by Clinical Surveillance or TAVR

This is a prospective, randomized, controlled, multicenter study. Subjects will be randomized to either transcatheter aortic valve replacement (TAVR) with the SAPIEN 3 / SAPIEN 3 Ultra /SAPIEN 3 Ultra RESILIA THV or Clinical Surveillance.

Key Inclusion Criteria:

• 65 years of age or older at time of randomization
• Moderate aortic stenosis
• Subject has symptoms or evidence of cardiac damage/dysfunction
• 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:

• Native aortic annulus size unsuitable for the THV
• Anatomical characteristics that would preclude safe transfemoral placement of the introducer sheath or safe passage of the delivery system
• Aortic valve is unicuspid or non-calcified
• Bicuspid aortic valve with an aneurysmal ascending aorta > 4.5 cm or severe raphe/leaflet calcification
• Pre-existing mechanical or bioprosthetic aortic valve
• Severe aortic regurgitation
• Prior balloon aortic valvuloplasty to treat severe AS
• LVEF < 20%
• Left ventricular outflow tract calcification that would increase the risk of annular rupture or significant paravalvular leak post-TAVR
• Cardiac imaging evidence of intracardiac mass, thrombus, or vegetation
• Coronary or aortic valve anatomy that increases the risk of coronary artery obstruction post-TAVR