BackgroundThe communicating vein (CV) between the great cardiac vein and small cardiac venous systems passes between the aortic and pulmonary annulus and is located in close association with the left...

Background An important contributor to the decreased life expectancy of individuals with schizophrenia is sudden cardiac death. While arrhythmic disorders play an important role in this, the nature...

不整脈専門医に必須の概念Entrainmentに関する教育講演。不整脈治療専門チームであるEP Expert Doctors-Team Tsuchiya代表土谷健先生の講演。第1部（全３部）。

In this large cohort comparison, Brugada syndrome (BrS) and arrhythmogenic cardiomyopathy patients had phenotypic overlap. The presence of arrhythmogenic cardiomyopathy diagnostic criteria in BrS...

In patients with Brugada syndrome, myocardial fibrosis can be identified through epicardial biopsy or cardiac magnetic resonance (CMR) imaging with late gadolinium enhancement (LGE). However, the...

Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question.

BACKGROUND: The anatomy of myocardial fibers around the right cardiac veins (RCVs) and their roles in accessory pathways (APs) are rarely reported. METHODS: Six RCV-APs were identified from 566...

J waves in the inferior or lateral leads are characteristic electrocardiographic (ECG) changes in patients with early repolarization syndrome (ERS). However, the presence of J waves in the left...

We describe two cases of asymptomatic Brugada syndrome that displayed a persistent ECG manifestation, but in which the typical ECG pattern disappeared following surgical castration for prostate...

Lyme disease is the most commonly reported vector-borne disease in North America, where it is transmitted by the Ixodes tick and caused by the gram-negative spirochete bacteria Borrelia burgdorferi.1...

Background: Ventricular arrhythmias and sudden death are recognized complications in tetralogy of Fallot. Electrophysiological studies (EPS) before pulmonary valve replacement (PVR), the most common...

Arrhythmogenic right ventricular cardiomyopathy (ARVC) is an inherited heart muscle disease, which is characterized by fibro-fatty replacement of predominantly the right ventricle (RV). The disease...

Different types of recurrent atrial tachycardia (AT) after Cox-maze procedures have been reported, whereas biatrial tachycardia (BiAT) has not been systematically analyzed.

Biatrial tachycardia (BiAT) is an atypical form of atrial tachycardia (AT), which contains both the right and left atria and 2 distinct interatrial connections in the circuit. BiAT is most frequently...

A 17-year-old male with tachycardia-induced cardiomyopathy presented with persistent, drug-resistant atrial tachycardia (AT). An electrophysiological study suggested focal abnormal automaticity, and...

Specific pacing methods to unmask the existence of the dual atrioventricular (AV) nodal pathway in patients with dual AV nodal non-reentrant tachycardia remain to be established.

Seventy-three year-old male with history of diabetes, hypertension, and chronic kidney disease stage 3 presented with epigastric pain and hyponatremia. ECG showed new ST segment elevation at precor...

Sudden cardiac arrest (SCA) is an uncommon but devastating event among young adults. While inherited cardiomyopathies and channelopathies represent an important proportion of sudden deaths, coronary...

Although catheter ablation has become routine treatment for accessory pathway (AP)-mediated tachycardias,1,2 the procedure still fails in a minority of cases. One of the causes of failure is incomp...

Following ablation on the RV moderator band for suppression of monomorphic PVCs, recurrent VT and VF were triggered by the same PVC at shorter coupling intervals. This is likely a pro arrhythmic...

Cardiac sarcoidosis (CS) with right ventricular (RV) involvement can mimic arrhythmogenic right ventricular cardiomyopathy (ARVC). Histopathological differences may result in disease-specific RV...

A spontaneous type 1 Brugada ECG pattern is not associated with a higher incidence of syncope, first-degree atrioventricular block, premature beats, nonmalignant AEs, and malignant AEs than the...

Catheter ablation is an effective treatment for drug-refractory postinfarct ventricular fibrillation (VF) storm. Purkinje-related premature ventricular contractions (PVCs) are the main triggers of VF...

Typical left bundle branch block (LBBB) shows 2 peaks of the R wave, which reflect activation reaching the interventricular septum (R) and posterolateral wall (Rʹ) sequentially.

Background—The characteristic ECG of Brugada syndrome (BS) can be masked by complete right bundle-branch block (CRBBB) and exposed by resolution of the block or pharmacological or pacing maneuvers....

Thirty-nine spontaneous type-1 patients affected by Brugada syndrome (BrS) and 4 controls underwent endocardial mapping (left panel). Activation recovery interval (ARI) calculated for each point was...

Introduction Defibrillation testing (DFT) is recommended during subcutaneous implantable cardioverter-defibrillator (S-ICD) implantation. Previous studies analyzing the potential interference of...

Recently, it has been shown that even experts in electrocardiography cannot differentiate the electrocardiographic pattern of genuine Brugada syndrome (BrS) from Brugada phenocopy (BrP). For this...

AbstractAims. Although cryoenergy safety profile is appropriate for the ablation of arrhythmogenic foci near the conduction system, mapping using the cryoa

Background Achieving bi-directional conduction block, as assessed by differential pacing and change in activation along tricuspid annulus (TA), across the cavo-tricuspid isthmus (CTI), is considere...

Background Brugada (BrS) and early repolarization syndromes (ERS), the so-called J wave syndromes (JWS), are associated with life-threatening ventricular arrhythmias. Pharmacologic approaches to...

Pulmonary vein isolation (PVI) is a well-established technique for catheter ablation of atrial fibrillation (AF). However, non-pulmonary vein premature atrial complexes (non-PV PACs) are also...

The Brugada syndrome is an inherited channelopathy associated with a high propensity of ventricular tachyarrhythmias and sudden cardiac death in individuals with structurally normal hearts. Recent...