Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Evolution of the aortic valve area as the configuration of the valves change in the case of (a) a surgical heart valve implantation originally and (b) a transcatheter aortic heart valve implantation originally. The value of 1.00 corresponds to a healthy aortic valve area and is taken to be 3.5 cm2.
