Key result
Left atrial roof diverticulum triggers AF recurrence, highlighting the role of non-pulmonary vein sources.
Why the study?
Non-pulmonary vein triggers, including those from the left atrial roof, play an important role in AF initiation and recurrence beyond pulmonary vein sources.
Case Report
Highlights the left atrial roof diverticulum as a potential source of non-pulmonary vein triggers in atrial fibrillation.
Pulmonary veins (PVs) are the predominant source of atrial fibrillation (AF), and pulmonary vein isolation (PVI) is the cornerstone of catheter ablation for AF. However, non-pulmonary vein (non-PV) triggers also play an important role in the initiation and recurrence of AF. These triggers can arise from various atrial and venous structures, including the superior vena cava, left atrial posterior wall, interatrial septum, coronary sinus, and left atrial roof. Takigawa et al. reported that approximately 8% of non-PV triggers originated from the left atrial roof, indicating that this region represents a clinically relevant source of non-PV AF triggers.
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Yamauchi et al. (2026) conducted a case report in Atrial fibrillation. Left atrial roof diverticulum was evaluated. Non-pulmonary vein triggers, including those originating from a left atrial roof diverticulum, play an important role in the initiation and recurrence of atrial fibrillation.
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