The purpose of this study is to assess the safety and device success of the Edwards CENTERA Transcatheter Heart Valve (THV) System in symptomatic adult patients with severe aortic stenosis.

This is a non-randomized, prospective, multi-center safety and device success study. Up to two hundred (200) patients are planned to be implanted at up to 35 participating investigational centers in Europe, Australia and New Zealand. Patient participation will last for a minimum of 5 years. Patients will be assessed at the following intervals: baseline, discharge, 30 days, 6 months, 1 year and annually thereafter through 5 years.

Inclusion Criteria:

1. Heart team (including cardiac surgeon) agrees on eligibility including as-sessment that TAVI is appropriate.
2. High surgical risk: 8 ≤ STS Score ≤ 15 or 15 ≤ Logistic EuroSCORE I ≤ 40.
3. NYHA ≥ II.
4. Study patient is an adult of legal consent age.
5. Study patient has provided written informed consent to comply with all of the study procedures and follow-up visits.

Exclusion Criteria:

1. Acute myocardial infarction ≤ 30 days before the intended treatment.
2. Untreated clinically significant coronary artery disease requiring revascularization.
3. Aortic valve is a congenital unicuspid or congenital bicuspid valve.
4. Mixed aortic valve disease (with predominant aortic regurgitation).