x It is possible (though unlikely) that tachycardia is in fact AVNRT yet atrial activation following the PVC is different than that during SVT. Because there can be multiple slow pathways it is ...

Peter Spector, M.D.; Nicole Habel, M.D. The first step in an electrophysiologic study is passive observation. One can examine the initiation and termination of tachycardia for clues as to its ...

The differential diagnosis of an irregularly irregular rhythm includes atrial fibrillation, atrial flutter with variable conduction and multifocal atrial tachycardia or wandering atrial pacemaker.

Sinus tachycardia is recognized on an ECG with a normal upright P wave in lead II preceding every QRS complex. This indicates that the pacemaker is coming from the sinus node and not elsewhere in ...