Key result
Catheter ablation is feasible and indicated for persistent AF in cor triatriatum sinister.
Why the study?
Cor triatriatum sinister is a rare congenital anomaly that may present with atrial arrhythmias, but data on catheter ablation in this context are limited.
Highlights the feasibility of catheter ablation for persistent atrial fibrillation in patients with complex congenital heart anomalies such as cor triatriatum.
Cor triatriatum sinister (CTS) is a rare congenital anomaly characterized by a fibromuscular membrane dividing the left atrium (LA) into anterior and posterior chambers (1,2). It may remain asymptomatic into adulthood or present with symptoms related to obstruction or atrial arrhythmias (3,4).
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Faucher et al. (2026) studied this question. Catheter ablation for persistent atrial fibrillation can be indicated in patients with cor triatriatum sinister, a rare anomaly presenting with obstruction or atrial arrhythmias.
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