Cor triatriatum sinister (CTS) is a rare congenital heart defect characterized by fibromuscular septation of the left atrium associated with atrial fibrillation (AF). The incidence of hemodynamically insignificant CTS in the AF ablation population and effect on ablation success are not known. Furthermore, little is known about the potential effect of CTS on arrhythmogenic substrate.

中文翻译：

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心房颤动患者心房颤动的导管消融术；案例系列和文献回顾

Cor triatriatum sinister (CTS) 是一种罕见的先天性心脏缺陷，其特征是与心房颤动 (AF) 相关的左心房纤维肌间隔。AF 消融人群中血流动力学不显着的 CTS 的发生率以及对消融成功的影响尚不清楚。此外，关于 CTS 对致心律失常底物的潜在影响知之甚少。