EDWARDS SAPIEN 3 or SAPIEN ULTRA SYSTEM clinical trials

Comparison of Allegra vs Sapien Transcatheter Aortic Valves in Valve-In-Valve Indication

This study compares two types of replacement heart valves (Allegra and Sapien) for people who have already had a heart valve operation and their artificial valve is wearing out. It aims to see which valve works better for this specific situation.