USMLE Forums - View Single Post - What ST segment represents?
View Single Post
  #5  
Old 08-23-2012
Casandra Casandra is offline
USMLE Forums Master
 
Steps History: 1+CK+CS
Posts: 1,039
Threads: 189
Thanked 609 Times in 341 Posts
Reputation: 619
Default correct answer

The answer is c) Phase 2

Phase 2 is the plateau phase, which is of long enough duration that all ventricular cells can be at this potential at the same time, producing no potential on a surface electrocardiogram. This is the ST segment.
Reply With Quote