Abnormally rapid heartbeats originating from one or more automatic foci (nonsinus pacemakers) in the HEART ATRIUM but away from the SINOATRIAL NODE. Unlike the reentry mechanism, automatic tachycardia speeds up and slows down gradually. The episode is characterized by a HEART RATE between 135 to less than 200 beats per minute and lasting 30 seconds or longer.
Also Known As:
Tachycardia, Ectopic Atrial; Atrial Ectopic Tachycardias; Atrial Tachycardia, Ectopic; Atrial Tachycardias, Ectopic; Ectopic Atrial Tachycardias; Ectopic Tachycardia, Atrial; Ectopic Tachycardias, Atrial; Tachycardia, Atrial Ectopic; Tachycardias, Atrial Ectopic; Tachycardias, Ectopic Atrial; Atrial Ectopic Tachycardia