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.
Variations of pressure gradient (obtained from subtracting the initial upstream pressure measurement from the other measurements) with (a) SAPIEN 3 and (b) Evolut at different locations in the aortic valve chamber at different time points during systole. The edge of the fully open leaflet is at (a) 3.5 cm with SAPIEN and (b) 4.2 cm with Evolut as highlighted with the dotted line. The shaded red area represent the location of the valve with respect to the measurement region.
