Cardiac Memory T waves; Learning bite

Persistent deep T wave inversions are seen after return of normal depolarization in leads where the T waves were normal before pacing. These changes are generally recognized to occur in association with artificial pacemakers but may occur with other entities with intrinsic ventricular ectopic focus of depolarization, such as intermittent left bundle branch block. Although consideration of ischemia should be given priority, awareness of the benign nature of cardiac memory may allow some patients to avoid unnecessary work-up and admission. Sometimes the diagnosis cannot be confirmed definitively in the Emergency Department (ED) because many patients who have pacemakers also have coronary artery disease and only after a negative work-up for ischemia can one retrospectively presume cardiac memory as the likely etiology.  Ref :- J Emerg Med. 2002 Aug;23(2):191-7. The ECG below shows Memory T waves nb :- Memory T waves occurs also after termination of  ventricular tachycardia    
Source: Doc2Doc BMJ Cardiology - Category: Cardiology Authors: Source Type: forums