نتایج جستجو برای: atrioventricular nodal reentry
تعداد نتایج: 33226 فیلتر نتایج به سال:
INTRODUCTION It is suggested that heterogeneous extracellular potassium concentration, cell-to-cell coupling, and geometric nonuniformities of the ischemic border zone contribute to the incidence of unidirectional block and subsequent development of lethal ventricular arrhythmias. METHOD AND RESULTS A discrete electrical network was used to model a single cardiac fiber with a [K+]e gradient c...
OBJECTIVE Ablation techniques of cardiac arrhythmia in children have significantly progressed in the past decade; however, the number of pediatric ablations is still significantly lower than that in adults. Accordingly, there is less information regarding the success rate and complications in this age group. METHODS All pediatric ablations conducted between March 2005 and February 2011 at Raj...
Multiple reports of familial clustering suggest that genetic factors may contribute in the pathogenesis of atrioventricular nodal re-entrant tachycardia (AVNRT). We report three cases of AVNRT in a father and his two sons along with a review of literature of other similar cases. Electrophysiological studies induced typical AVNRT, which was successfully eliminated by radiofrequency ablation in a...
The patient was a 39-year-old female with recurrent paroxysmal, regular narrow QRS complex tachycardia. Atrioventricular nodal reentrant tachycardia (AVNRT) was induced. The cryo-ablation attempts (-80°C, 240 second) were performed in the inferior-posterior triangle of Koch. We observed several junctional beats during cryo-ablation. After successful cryo-ablation, AVNRT induction was repeatedly...
BACKGROUND There is evidence that atypical fast-slow and typical atrioventricular nodal re-entrant tachycardia (AVNRT) do not use the same limb for fast conduction, but no data exist on patients who have presented with both typical and atypical forms of this tachycardia. We compared conduction intervals during typical and atypical AVNRT that occurred in the same patient. METHODS AND RESULTS I...
Arrhythmia Center & Clinical Electrophysiological Laboratory, FuWai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing; Dept of Cardiology, Qingdao Fuwai Hospital, Qingdao; Dept of Cardiology, Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangzhou; Dept of Cardiology, the First Affiliated Hospital of China Medical University, Sheny...
INTRODUCTION In 2008 the radiofrequency ablation procedures (RFA) registry of the Hellenic Cardiological Society (HCS) was created. This is a dynamic, web-based application, which acts as the interface for storing and retrieving patients' demographic data and ablation procedures. Access to the site is permitted only to registered users. The purpose of this study is to report the results of RFA ...
In a patient with Wolff-Parkinson-White syndrome whose accessory pathway was primarily capable of bidirectional conduction, antegrade conduction over the accessory pathway was transiently inhibited after rapid atrial or ventricular pacing or after spontaneous termination of atrioventricular reentrant tachycardia. Pacing rate and duration of tachycardia were related to the duration of the suppre...
OBJECTIVES The role of the atrial inputs for the conduction through the atrioventricular node (AVN) at slow rates and during reentrant tachycardia is well acknowledged, although still controversial. However, the relationship between the sequence and rate of atrial engagement of the AVN inputs and the resulting ventricular rate during high atrial rate remains unclear. This study provides quantit...
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