Cheng-Hung Li

Long-term outcome of catheter ablation in patients with atrial fibrillation originating from nonpulmonary vein ectopy

Long‐Term Outcome of NPV AF Ablation.u2002Introduction: Data regarding the long‐term outcome of catheter ablation in patients with nonpulmonary vein (NPV) ectopy initiating atrial fibrillation (AF) are limited. We aimed to evaluate the long‐term result of patients with AF who had NPV triggers and underwent catheter ablation.

Long-Term Outcome of Catheter Ablation in Patients with Atrial Fibrillation Originating from the Superior Vena Cava

Long‐Term Outcome of SVC AF Ablation.u2003Introduction: Data of the long‐term clinical outcome after superior vena cava (SVC) isolation are limited. We aimed to evaluate the long‐term outcome in patients with atrial fibrillation (AF) who had triggers originating from the SVC and received catheter ablation of AF.

Different Patterns of Atrial Remodeling After Catheter Ablation of Chronic Atrial Fibrillation

Atrial Substrate Remodeling After Chronic AF Ablation.u2002Background: Multiple remodeling patterns have been observed after catheter ablation of atrial fibrillation (AF). Objective: We aimed to clarify the electrical/structural properties associated with recurrences after ablation of chronic AF.

Differentiating Macroreentrant from Focal Atrial Tachycardias Occurred After Circumferential Pulmonary Vein Isolation

Macroreentrant and Focal Atrial Tachycardias.u2002Background: 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).

A Prospective and Randomized Comparison of Limited Versus Extensive Atrial Substrate Modification After Circumferential Pulmonary Vein Isolation in Nonparoxysmal Atrial Fibrillation

The optimal substrate ablation approach in patients with persistent atrial fibrillation (Per AF) remains unclear. This was a prospective randomized study comparing the efficacy of limited (continuous complex fractionated atrial electrogram, CFAE: <60 milliseconds) versus extensive (continuous CFAE plus variable CFAE: <120 milliseconds) atrial substrate modification in Per AF patients.

Characteristics and Significance of Very Early Recurrence of Atrial Fibrillation After Catheter Ablation

Very Early Recurrence of AF.u2002Introduction: Early restoration of sinus rhythm following ablation of atrial fibrillation (AF) facilitates reverse atrial remodeling and improves the long‐term outcome. The purpose of this study was to determine the predictors and outcome in patients with very early AF recurrences (<u20032 days).

Atrial Electromechanical Interval Can Identify Patients With Paroxysmal Atrial Fibrillation and is Associated With CHADS2 Score and Peak Velocity of Left Atrial Appendage

Electromechanical Interval and Paroxysmal Atrial Fibrillation.u2002Introduction: It is difficult to discriminate patients with and without paroxysmal atrial fibrillation (PAF). The atrial electromechanical interval determined by the transthoracic echocardiogram is demonstrated to be a predictor of new onset AF. The aim of our study was to investigate whether the electromechanical interval is a useful parameter to identify patients with PAF.

Differences in the Atrial Electrophysiological Properties Between Vagal and Sympathetic Types of Atrial Fibrillation

Autonomic modulation of the cardiac activity plays an important role in the pathogenesis of atrial fibrillation (AF). The aim of this study was to assess the differences in the atrial electrical and structural properties between patients with vagal and sympathetic AF.

A Prospective, Randomized Comparison of Modified Pulmonary Vein Isolation Versus Conventional Pulmonary Vein Isolation in Patients with Paroxysmal Atrial Fibrillation

Modified Pulmonary Vein Isolation in AF Ablation.u2003Introduction: Pulmonary vein isolation (PVI) is the primary ablation therapy in patients with atrial fibrillation (AF). We hypothesized that high dominant frequency (DF) sites (AF nests during sinus rhythm [SR]) adjacent to the PV ostia are associated with the atrial substrate that maintains AF, and PVI incorporating the high‐frequency AF nests may have a higher efficacy.

The Impact of Age on the Electrophysiological Characteristics and Different Arrhythmia Patterns in Patients with Wolff–Parkinson–White Syndrome

Age‐Related Changes of Accessory Pathways. Introduction: Information about the impact of age on the electrophysiological characteristics of accessory pathways (APs) in patients with Wolff–Parkinson–White (WPW) syndrome remains limited.