Abstract
Atrial fibrillation (AF) triggers are repetitive bursts of ectopic atrial activity that can induce AF. These triggers are often located in the pulmonary vein antra (PVA). The latter are tubular structures arising from the posterior wall of the left atrium and giving rise to the pulmonary veins. Multiple imaging modalities have been used to define the PVA, including intracardiac echocardiography along with computed tomographic scans and magnetic resonance imaging. Isolation of AF triggers by performing PVA isolation has been shown to be superior and safer than focal ablation of these triggers. The PVA isolation procedure is often performed using two catheters, a circular mapping catheter and an ablation catheter. The endpoint of this pro cedure is to electrically isolate the pulmonary vein antra.
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Kanj, M., Verma, A., Patel, D., Schweikert, R. (2008). Isolation of Pulmonary Vein Antrum Triggers. In: Natale, A., Jalife, J. (eds) Atrial Fibrillation. Contemporary Cardiology. Humana Press. https://doi.org/10.1007/978-1-59745-163-5_19
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