Chien-Jun Chang

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Previous studies have reported that metabolic syndrome (MS) is associated with the development of atrial fibrillation (AF). However, its impact on the atrial substrate properties and catheter ablation in patients with AF is still unclear. This study consisted of 282 patients with AF (216 with paroxysmal AF and 66 with nonparoxysmal AF) who underwent(More)
BACKGROUND Atrial tachycardias (ATs) are commonly observed following catheter ablation of atrial fibrillation (AF). The aim of this study was to identify ECG characteristics that differentiate focal from macroreentrant ATs after circumferential pulmonary vein isolation (CPVI). METHODS AND RESULTS One hundred and twenty ATs that occurred after CPVI were(More)
INTRODUCTION Although several studies have reported the benefits of cooled-tip ablation for circumferential pulmonary veins isolation (CPVI), the acute change of substrate property and acute PV reconnection have not been well demonstrated. The aim of this study was to compare the cooled-tip with regular 4-mm-tip catheter in acute substrate change after CPVI(More)
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