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Transcatheter Pulmonary Vein Isolation

Effective catheter treatment of atrial fibrillation was made possible by a breakthrough discovery in the late 1990's by investigators in Bordeaux , France . They found that recurrent atrial fibrillation (paroxysmal and persistent) is triggered by rapidly firing tissue, (called "ectopic foci"), that are located in one or more of the four pulmonary veins (PV's), which attach to the rear of the left atrium. Their research, since confirmed by others, suggested that 85% or more of the ectopic foci that initiate atrial fibrillation are located in or at the ostium, (mouth), of the pulmonary veins. They demonstrated that AFib could be cured by ablation techniques that electrically isolated the PV's from the rest of the atrium.


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