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Atrial Tachycardias Occurring After Atrial Fibrillation Ablation: Strategies for Mapping and Ablation

The occurrence of left atrial tachycardias (AT) after catheter ablation for atrial fibrillation (AF) are common, especially after more extensive ablation of persistent AF. These AT are invariably symptomatic and often do not respond to medical therapy.  The initial strategy involves ventricular rate control, cardioversion, and observation as some tachycardias may resolve with time. For persistent ATs, effective management frequently requires catheter intervention. Careful characterization of the tachycardia mechanism is essential in designing an effective ablation strategy that would also avoid further creation of pro-arrhythmic substrate. With this review, we summarize the incidence, mechanism, diagnosis and treatment of ATs occurring after AF ablation.

Credits: Stavros Mountantonakis, MD; Edward P. Gerstenfeld, MD

Biosense Webster
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Introduction to AFib
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