Vagal stimulation reduces spatial organization of atrial fibrillation and increases internal atrial defibrillation threshold
نویسندگان
چکیده
منابع مشابه
Effect of atrial fibrillation organization on internal defibrillation threshold.
Aim of the present study is to assess the effect of the organization of atrial fibrillation in the right atrium on the minimum effective cardioversion energy. Thirteen patients were studied, selected a priori for low-energy internal cardioversion (LEIC). LEIC was carried out at increasing energy levels. All patients were monitored by a multipolar basket catheter in basal condition and during ca...
متن کاملVagal Atrial Fibrillation
The autonomic nerve system plays an important role in atrial fibrillation (AF). Vagal AF refers AF (generally paroxysmal) arising in contexts of enhanced parasympathetic tone. Heterogeneity of refractoriness and action potential abbreviation resulting from spatially variable parasympathetic enhancement of the acetylcholinedependent K-current (IKACh) underlie vagal AF. Adrenergic influences may ...
متن کاملHigh Atrial Defibrillation Threshold With Internal Cardioversion Indicates Arrhythmogenicity of Superior Vena Cava in Non-Long-Standing Persistent Atrial Fibrillation.
BACKGROUND The purpose of this study was to clarify the relation between atrial defibrillation threshold (ADFT) for internal cardioversion (IC) and arrhythmogenicity of the superior vena cava (SVC). METHODS AND RESULTS A total of 159 consecutive patients (139 male, age 59.9±10.3 years) who underwent radiofrequency catheter ablation of atrial fibrillation (AF) were assessed. IC was performed i...
متن کاملInappropriate use of atrioventricular nodal vagal stimulation in atrial fibrillation.
Stimulation in Atrial Fibrillation To the Editor: Zhuang et al1 showed well that slowing the ventricular rate by atrioventricular nodal vagal stimulation (AVN-VS) improved hemodynamics during atrial fibrillation (AF). This gave better hemodynamic responses than slowing the ventricular rate by atrioventricular nodal ablation with right ventricular pacing, which caused adverse effects that the au...
متن کاملAssessment of global atrial fibrillation organization to optimize timing of atrial defibrillation.
BACKGROUND We hypothesized that frequency domain analysis of a wide bipolar interatrial electrogram describes the global organization of atrial fibrillation (AF) and should vary over time. By timing shocks to periods of high organization of AF, cardioversion efficacy should improve. METHODS AND RESULTS A total of 15 dogs (weight, 28.2+/-3.4 kg) were rapidly paced for 48 to 72 hours to induce ...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 1996
ISSN: 0735-1097
DOI: 10.1016/s0735-1097(96)82150-4