Key result
Ablation of ectopic foci originating from the ostium of the inferior vena cava resulted in the elimination of paroxysmal atrial fibrillation in two patients.
Case Report (n=2)
Ectopic beats originating from the ostium of the inferior vena cava can trigger atrial fibrillation, and their ablation may explain and prevent AF recurrence in some patients after pulmonary vein isolation.
May identify an extra-PV trigger in recurrent AF; hypothesis-generating and should not yet change practice.
Ectopic beats triggering atrial fibrillation may arise from atrial myocardial extensions in the pulmonary veins, superior vena cava, coronary sinus, and vein of Marshall. We report two patients with paroxysmal atrial fibrillation initiated by ectopic beats originating from the inferior vena cava. The foci responsible for the ectopic beats were located and ablated, resulting in elimination of atrial fibrillation. Ectopic beats originating from the os of the inferior vena cava can result in atrial fibrillation. This finding may explain the recurrence of atrial fibrillation in some patients after pulmonary vein isolation.
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Mansour et al. (2002) conducted a case report in Paroxysmal atrial fibrillation (n=2). Ablation of ectopic foci in the inferior vena cava was evaluated on Elimination of atrial fibrillation. Ablation of ectopic foci originating from the ostium of the inferior vena cava resulted in the elimination of paroxysmal atrial fibrillation in two patients.
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