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.
FIGURE 3. Echo example of contractility reserve in a patient with low gradient because of severe LV dysfunction with a LVEF of 30%. Mean baseline transvalvular gradient is 32 mmHg (Figure 1A); dobutamine infusion leads to an increase of transvalvular gradient to 43 mmHg
