Supraventricular tachycardias (SVTs) are observed in 0,1-0,4% of the paediatric population and represent an important clinical problem with related significant health and social issues. Most tachycardias are paroxysmal, being associated with sudden onset and termination, and only a relatively small number of them is permanent, namely chronic. Paroxysmal tachycardias, in addition, can be either ...

AIMS Although atrial-tachycardia remodelling is a significant atrial fibrillation (AF) promoting factor, little information is available about how atrial-tachycardia rate determines remodelling effects. This study assessed the effects of atrial tachypacing (ATP) over a range of clinically relevant rates on atrial electrophysiology and AF. METHODS AND RESULTS Chronically instrumented dogs unde...

Atrial fibrillation (AF) from the ligament/vein of Marshall (LOM/VOM) has previously been described. We report the case of a 23-year-old woman with an antiarrhythmic drug-resistant AF induced by two distinct atrial tachycardias (ATs). Focal ablation of these ATs from the double-exit of the Marshall bundle using a three-dimensional map eliminated AF triggering, even though pulmonary vein electri...

OBJECTIVES This study was designed to analyze the incidence of "dual tachycardia"-ventricular tachycardia (VT) or ventricular fibrillation (VF) preceded by paroxysmal atrial tachycardia (AT) or atrial fibrillation (AF)-in patients receiving dual-chamber implantable cardioverter defibrillators (ICDs). BACKGROUND Paroxysmal AT/AF occurs commonly in patients who receive ICDs for the treatment of...

BACKGROUND Atrial fibrillation (AF) characterized by atrial remodeling occurs with obesity-related conditions. Adiponectin, an adipose tissue-derived hormone exerts beneficial effects on ventricular remodeling, so in the present study the potential association between circulating adiponectin levels and atrial remodeling in patients with AF was investigated. METHODS AND RESULTS The levels of p...

We tested the effectiveness and safety of i.v. diltiazem in the management of paroxysmal supraventricular tachyarrhythmias in 39 patients, 21 with organic heart disease and seven in heart failure. Fifteen patients presented with supraventricular tachycardia, 12 with atrial fibrillation and 12 with atrial flutter. End points were conversion to sinus rhythm or slowing of the ventricular rate to 1...

A 64-year-old man who complained of palpitations brought on by swallowing was found to have short runs of paroxysmal supraventricular tachycardia (SVT) induced by swallowing. Electrophysiology studies suggested that the SVT was an automatic atrial tachycardia. An esophageal manometric study demonstrated that the tachycardia was coincident with relaxation of the upper esophageal spincter and pre...

Coughing could induce symptomatic, frequent atrial premature contractions (APCs), and episodes of atrial tachycardia (AT) in a rare case. If multiple arrhythmic drugs therapy failed to control the symptoms, catheter ablation was an effective therapeutic option for abolishing such atrial tachyarrhythmias guided by the electroanatomic mapping systems.

AIMS Currently used diagnostic manoeuvres at the electrophysiology study do not always allow for consistent identification of atrial tachycardia (AT), either because of inapplicability of the technique or because of low predictive value and specificity. The aim of this study was to determine whether overdrive atrial pacing during paroxysmal supraventricular tachycardia (SVT) with the same cycle...

the use of diagnostic and therapeutic methods for assessing pulmonary vein due to its status as a main source of ectopic beats for the initiation of atrial dysrrythmias is strongly recommended.   we report the case of a 13-year-old girl who was admitted to our hospital with the electrocardiogram manifestation of an ectopic atrial tachycardia. the focus of arrhythmia was inside the right upper p...