This ectopic focus becomes the predominant pacemaker of the heart. When the atrial rate is greater than 100 beats per minute, the rhythm is atrial tachycardia. If less than 100 beats per minute ...

Wandering atrial pacemaker is similar to multifocal atrial tachycardia except the heart rate is normal ... pacemaker occurs when multiple areas (ectopic foci) within the atrium generate ...