Figure 1.
Plot of change in coronary artery diameter versus change in coronary blood flow in response to acetylcholine.
Values are percentages. The white and grey zones represent normal versus abnormal coronary vasomotion.
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.