background: complete atrioventricular block (av block) is a serious complication of slow pathway ablation therapy in the treatment of atrioventricular nodal re-entrant tachycardia (avnrt).   the present study was aimed at determining whether the electroanatomical pace mapping of koch’s triangle could significantly improve the safety, efficiency, and efficacy of selective slow pathway ablation i...

Tachycardias that are successfully ablated in the vicinity of the atrioventricular (AV) node are common, and although frequently successfully treated, are among the most difficult arrhythmias to understand in cardiac electrophysiology. Even AV node reentrant tachycardia (AVNRT), despite near universal cure, is complex with the anatomic constructs for typical, atypical forms, left-sided AVNRT, u...

Patients with Ehlers-Danlos syndrome type IV have thin-walled, friable arteries and veins. Invasive procedures carry a significantly increased risk for perforation of blood vessels. The aim of this case report is to demonstrate the feasibility and potential benefits of using a stereotactic magnetic navigation system (MNS) for mapping and ablation under these very special circumstances. A 45-yea...

We report a patient with an implantable cardioverter defibrillator (ICD) for arrhythmogenic right ventricular dysplasia (ARVD) who received inappropriate shocks for atrioventricular node reentry tachycardia (AVRNT). Patient had multiple shocks for tachycardia with EGM characteristics of very short VA interval and CL of 300 msec. An electrophysiologic (EP) study reproducibly induced typical AVNR...

Catheter ablation is nowadays the first therapeutic option for AVNRT, the most common benign supraventricular tachycardia. Both cryotherapy and radiofrequency energy may be used to ablate the slow pathway. This paper compares both techniques, evaluates results published in literature and gives feedback on some typical aspects of cryo- and RF ablation. Although both techniques have satisfying su...

INTRODUCTION Radiofrequency (RF) ablation of the slow pathway for treatment of atrioventricular nodal reentrant tachycardia (AVNRT) is conventionally performed during sinus rhythm. AIM To evaluate the clinical and electrophysiological features and the short- and long-term results of slow pathway RF ablation during ongoing AVNRT. MATERIAL AND METHODS A total of 282 consecutive patients with ...

OBJECTIVES This randomized prospective study sought to assess the value of slow pathway (SP) mapping and ablation guided by subthreshold stimulation (STS) in comparison with a strategy based on conventional criteria. BACKGROUND Previous studies have demonstrated that STS can be used as a highly specific and sensitive marker for successful SP ablation in the setting of atrioventricular nodal r...

AIMS Data about the acute and long-term outcome of catheter ablation in patients with D-transposition of the great arteries (d-TGA) post-Mustard/Senning operation are scarce. METHODS AND RESULTS This single-centre retrospective analysis includes 26 patients (mean age 28.7 ± 6.7 years, 8 females) after Mustard (n = 15) or Senning (n = 11) operation who underwent catheter ablation for intra-atr...

A 30 year old woman with a three year history of intermittent palpitations presented to the emergency department following a typical episode. She was known to have â thalassaemia minor and took no regular medication. A 12 lead ECG on presentation demonstrated sinus rhythm with a PR interval of 112 ms but without evidence of ventricular pre-excitation. During examination, syncope occurred and tr...