Atrial tachycardia with 2:1 block; when atrial tachycardia occurs with a 2:1 conduction block, digoxin toxicity should be considered.

The spectrum of arrhythmias in patients with paroxysmal atrial fibrillation ... white arrow in the image). There is 2:1 conduction block between the PV tachycardia and the left atrium (LA ...

Atrial fibrillation Atrial flutter with variable conduction Multifocal atrial tachycardia (MAT). With atrial fibrillation, no descrete P waves can be seen, however sometimes coarse "fibrillitory ...

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 ...