Variability in P wave morphology, with each unique P wave morphology felt to indicate a different site of atrial origin.

The heart rate in MAT exceeds 100 beats per minute. To distinguish MAT from other tachyarrhythmias of atrial origin, there should be organized atrial activity yielding P waves with three or more different morphologies.

 

 

 

 

 

 

 

 

 

 

 

Content 3

Content 13

Content 11

 

A


 

USMLE Reviewer (Subscription Required)