Cardiology Research and Practice / 2010 / Article / Fig 4

Review Article

Atrial Tachycardias Arising from Ablation of Atrial Fibrillation: A Proarrhythmic Bump or an Antiarrhythmic Turn?

Figure 4

The electrogram recordings from four sites (red, blue, yellow, and maroon stars) on anterior and posterior left atrium are timed with coronary sinus dipole (CS 3-4) as reference. Local electrograms recorded from the high (red star) and low (blue star) anterior sites are 168 ms and 214 ms, respectively from the reference suggestive of high to low anterior left atrial activation pattern. Local electrograms recorded from high (maroon star) and low (yellow star) posterior sites are 274 ms and 262 ms, respectively from the reference suggestive of low to high posterior left atrial activation pattern. This pattern is consistent with roof dependent flutter.
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