Abstract
According to the joint expert committee from the Working Group of the European Society of Cardiology and the Heart Rhythm Society, atrial tachycardia (AT) is categorized as focal if the activation starts rhythmically at a small area and spreads centrifugally or macroreentrant if characterized by reentrant activation around a “large” central obstacle.1 We mapped and ablated a stationary reentrant circuit with spiral activation driving AT in the left atrium (LA). Because of its regular cycle length, this case offered the unique opportunity to study in detail the characteristics of intracardiac activation and electrograms during spiral wave activation.
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