Ebstein's anomaly presenting with the acute coronary syndrome-a rare combination.

Ebstein's anomaly is a relatively rare congenital heart disorder characterised by downward displacement of septal and posterior leaflets of the tricuspid valve into the right ventricle cavity. The usual presenting symptoms are cyanosis, right-sided heart failure and arrhythmia. Progressive heart failure or tachyarrhythmia may worsen cyanosis.

Shorter Leukocyte Telomere Length Is Associated With Atrial Remodeling and Predicts Recurrence in Younger Patients With Paroxysmal Atrial Fibrillation After Radiofrequency Ablation.

Background: Telomere length is a biologic aging marker. This study investigated leukocyte telomere length (LTL) as a new biomarker to predict recurrence after paroxysmal atrial fibrillation (PAF) ablation.

Methods and results: A total of 131 participants (26 healthy individuals and 105 symptomatic PAF patients) were enrolled.

Ventricular arrhythmias originating from the cardiac crux and the basal inferior segment of the interventricular septum in the patients with structural heart diseases: characteristics, mapping, and electrophysiological properties.

Purpose: There are few reports describing ventricular arrhythmias (VAs) from the crux and the corresponding endocardial site, i.e., the basal inferior segment of the interventricular septum (IVS).

Ablation of Ventricular Tachycardia Arising from the Great Cardiac Vein - A Rare Cause of Coronary Artery Injury.

We herein report a case of coronary artery injury during epicardial ablation of ventricular tachycardia (VT), and describe an effective method to combat such an injury. A male patient presented with recurrent palpitations which was refractory to medications, with a history of clinically documented VT during the symptomatic episodes. The ablation procedure was performed at the great cardiac vein/anterior interventricular vein (GCV/AIV) junction, in part because pace mapping showed a 12/12 match, and activation map of VT demonstrated the earliest activation site at GCV/AIV junction.

Characteristics and long-term catheter ablation outcome in long-standing persistent atrial fibrillation patients with non-pulmonary vein triggers.

Background: There are limited literatures regarding the non-pulmonary vein (NPV) triggers in long-standing persistent atrial fibrillation (LSPAF). The goal of the present study was to investigate the characteristics and long-term outcome of catheter ablation among these patients.

Methods: The study included 776 patients (age 53.

Impact of aortic encroachment to left atrium on non-pulmonary vein triggers of atrial fibrillation.

Background: Aortic dilatation was frequently observed in patients with atrial fibrillation (AF) and non-pulmonary vein (PV) triggers are important for mapping and ablation of AF. We hypothesized that the aortic encroachment area over left atrium (LA) could contribute to the local substrate characteristics.

Methods: We studied 32 consecutive patients of AF (age=57.

Left Atrial Size and Left Ventricular End-Systolic Dimension Predict the Progression of Paroxysmal Atrial Fibrillation After Catheter Ablation.

Introduction: Although rare, some paroxysmal atrial fibrillations (AF) still progress despite radiofrequency (RF) ablation. In the study, we evaluated the long-term efficacy of RF ablation and the predictors of AF progression.

Methods: A total of 589 paroxysmal AF patients (404 men and 185 women; aged 54 ± 12 years) who received 3-dimensional mapping and ablation were enrolled.

Long-Term Outcome of Non-Sustained Ventricular Tachycardia in Structurally Normal Hearts.

Background: The impact of non-sustained ventricular tachycardia (NSVT) on the risk of thromboembolic event and clinical outcomes in patients without structural heart disease remains undetermined. This study aimed to evaluate the association between NSVT and clinical outcomes.

Methods: The study population of 5903 patients was culled from the "Registry of 24-hour ECG monitoring at Taipei Veterans General Hospital" (REMOTE database) between January 1, 2002 and December 31, 2004.

Ablation of ventricular arrhythmia originating at the papillary muscle using an automatic pacemapping module.

Background: Ventricular arrhythmia originating from the papillary muscle (VA-PM) is characterized by multiple exits and morphologic alternations. The conventional ablation strategy relies on activation mapping, but the results might be suboptimal.

Objective: The purpose of this study was to propose a novel pacemapping strategy aimed at multiple exits using high-output software as a complementary approach to the conventional strategy.

Novel electrophysiological characteristics of atrioventricular nodal continuous conduction curves in atrioventricular nodal re-entrant tachycardia with concomitant cavotricuspid isthmus-dependent atrial flutter.

Aims: The detailed electrophysiological characteristics of patients with both atrioventricular nodal re-entrant tachycardia (AVNRT) and atrial flutter (AFL) have not been clarified. This study investigated the related electrophysiological differences in a large series of patients undergoing radiofrequency catheter ablation of AVNRT.

Methods And Results: A total of 1063 clinically documented AVNRT patients underwent catheter ablation were enrolled.