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.
*Provocation tests are necessary for diagnosis in patients with suspected vasospastic angina but infrequent angina episodes and/or no typical ST-segment changes during angina attacks.
CAS = coronary artery spasm; CCB = calcium channel blocker.
