Multifocal atrial tachycardia is a tachycardic version of wandering atrial pacemaker in which ... will be preceded by a P wave; however, each P wave will have a different morphology because ...
Multifocal atrial tachycardia (MAT) requires three different P wave morphologies in one ECG with a QRS complex rate of > 100. Wandering atrial pacemaker ... Wellen’s phenomenon occurs from ...