Persistent Left Superior Vena Cava as a Perpetuator of Atrial Fibrillation: Frequency Analysis using Continuous Wavelet Transform Analysis.

Isolated persistent left superior vena cava (PLSVC) is the most common congenital thoracic venous anomaly, with a prevalence of 0.3-0.5% in patients without other congenital heart disease(1). PLSVC can be an important arrhythmogenic source of atrial fibrillation (AF) especially as a trigger of paroxysmal AF, and PLSVC isolation is effective(2-6). Recently, continuous wavelet transform (CWT) analysis, which is a novel frequency analysis, was reported to be able to detect stable high-frequency sites as perpetuators of AF in patients with persistent AF(7). This article is protected by copyright. All rights reserved.