ALLIANCE: Safety and Effectiveness of the SAPIEN X4 Transcatheter Heart Valve
The objective of this study is to establish the safety and effectiveness of the Edwards SAPIEN X4/X4S Transcatheter Heart Valve (THV) in subjects with symptomatic, severe, calcific aortic stenosis (AS).
Severe, calcific AS [+3]
Anatomical characteristics that would preclude safe femoral placement of the int... [+30]