J Clementy

..In this study, a computer model and clinical data on human subjects undergoing catheter ablation for paroxysmal and persistent AF were used to determine the clinical potential of AFCL...

..These findings may suggest a similar substrate and arrhythmia mechanism in the myocardium of the pulmonary veins...

..Ventricular fibrillation is the main mechanism of sudden cardiac death. The feasibility of eliminating recurrent episodes by catheter ablation has not been reported...

..Sustained atrial fibrillation (AF) is frequently encountered during pulmonary vein (PV) isolation. The aim of this study was to evaluate the feasibility and safety of PV isolation during sustained AF...

..The incidence and characteristics of dissociated arrhythmia confined to the pulmonary vein (PV) following disconnection have not been described in a large number of patients with paroxysmal atrial fibrillation...

..The modification of atrial fibrillation cycle length (AFCL) during catheter ablation in humans has not been evaluated...

..The relative contributions of different atrial regions to the maintenance of persistent atrial fibrillation (AF) are not known...

..The clinical outcome and subsequent arrhythmia recurrence after using an ablation method targeting multiple left atrial sites with the aim of achieving acute AF termination has not been characterized...

..Endocardial mapping of localized sources driving atrial fibrillation (AF) in humans has not been reported...

..Continuous positive airway pressure (CPAP) reduces arrhythmias significantly...

..Low power RF energy delivered to the site of earliest activation completely abolished the ectopic activity without modification of Hisian or atrioventricular conduction. After a 12-month followup, the patient remains free of recurrence...

..We assessed the anatomical distribution and electrogram characteristics of breakthrough from the left atrium (LA) to the pulmonary veins (PVs)...

..Simultaneous electrogram recordings with a circumferential PV catheter identified the presence of multiple arrhythmogenic foci within a single PV...

..Radiofrequency applications inside the left superior pulmonary vein eliminated both atrial fibrillation and the ectopic pacemaker...

..Distal CS or LA pacing is required to recognize left PVPs in approximately 2/3 of patients and facilitates RF ablation...

..It is anticipated that continued technological development will improve and facilitate this technique of curative treatment of AF...

..This study compared the chronotropic performance of such devices implanted in 14 patients suffering from chronotropic incompetence with that observed in 18 control subjects in normal sinus rhythm...

..Echocardiography allows observation of electromechanical delay and opens new perspectives in the future for selecting patients for pacing. Ar..

..We investigate the feasibility and results of combined pulmonary vein and linear ablation utilizing a specific linear lesion connecting the lateral mitral annulus to the left inferior pulmonary vein (left isthmus)...

..We assessed the impact of apical ventricular pacing on echocardiographic ventricular dyssynchrony and hemodynamic parameters...

..Thus, in heart failure patients with BVP, endocardial BVP provides more homogenous intraventricular resynchronization than epicardial BVP and is associated with better LV filling and systolic performance...

..To assess the effect of adding propafenone to atrial overdrive for the prevention of atrial arrhythmia episodes in patients with DDD pacemakers...

..This case illustrates the promising possibility to circumvent the interatrial conduction block with single left atrial pacing instead of biatrial pacing which was not suitable here...

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..Some comparative studies with medical treatment are currently evaluating their efficacy, safety and respective cost and they may lead to a considerable increase in the number of patients who could benefit from these curative treatments...

..The clinical results were spectacular: 88% of patients had no further episodes of ventricular fibrillation as demonstrated by analysis of the defibrillator with an average follow-up period of more than 34 months...

..With constant improvement in this field catheter ablation has become a valuable tool in the management strategy of AF...

..This review will summarize currently available technology of ICE and its indications and applications in electrophysiological procedures...

..In RVP patients, an interventricular electromechanical delay or intra-LV electromechanical delay > 50 ms reflects a significant ventricular mechanical asynchrony and should be required to select patients for upgrading to BVP...

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..005). CONCLUSION: PVC initiating VF demonstrate specific electrocardiographic features that facilitate determination of their origin. Ablation of these typical PVC is feasible in order to reduce ICD shock...

..To determine clinical features, management and prognosis of cardiac conduction abnormalities (CCA) complicating abscessed endocarditis...

..It is therefore possible that cardiac stimulation will become part of the treatment of sleep apnea in patients with documented bradycardia and/or heart failure...

..This effectively eliminates the influence of height, which reflects the length of the arterial segment under investigation...

..Pacemaker implantation seemed justified rather than donepezil cessation. More over, it permitted an increase in donepezil dosage...

..A marked abrupt daily elevation in blood pressure on arising, then maintained for a certain time, could contribute to the development of left ventricular hypertrophy and may constitute a trigger for cardiovascular complications...

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..Transcatheter ablation seems to be feasible and safe enough to be offered as an alternative to surgery in the treatment of refractory reciprocating tachycardia in children...

..The concentric character of the LVH of the hypertensive patient was thus linked to the reduction in arterial distensibility...

..Therefore, there appears to be a field of research for cardiac pacing in apnoea syndromes. The authors review the principal reported data on the indications and possibilities of extra-cardiac and cardiac stimulation in apnoeic syndromes...

..Evaluation of ablation patterns by computer simulation provides a tool for examination of its effectiveness and side effects...

..The potential of phase-rectified analysis is demonstrated through experiments both on synthetic and clinical ECG signals...

..This study aims at developing methods for extracting spatiotemporal information about the electric activity of the atria from electrocardiographic signals, in particular during atrial fibrillation...

..This complex, coupling-dependent interaction of fibroblast and myocytes also has relevance to the integration of other nonmyocytes in the heart, such as those used in cellular therapies...

..The same matrix is used for both these quantities. We then give some results of simulation for simple monolayers and complex monolayers resembling a human atria...

..ECG signals generated by a biophysical model as well as clinical ECG signals are used to evaluate the performance of the proposed methods in comparison to two standard ABS-based methods...

..To explain the contradictory results related to the concept of critical cardiac wavelength in the initiation and perpetuation of atrial fibrillation (AF)...

..The objective of the study was to design a lead system aimed at studying atrial fibrillation (AF), while being anchored to the standard 12-lead system...

..The aim of the study was to design a vectorcardiographic lead system dedicated to the analysis of atrial fibrillation (AF)...

..To assess the effectiveness of the equivalent surface source model in the simulation of atrial signals as observed in ECG leads...

..CONCLUSION: Analysis of the amplitude and symmetry of unipolar atrial electrograms can provide information about the electrophysiologic substrate maintaining AF...

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..This may constitute a mechanism of focal sources triggering arrhythmias such as atrial fibrillation...

..This study aims at investigating in a biophysical model how much coupling would be necessary to perturb significantly the electrical propagation of the cardiac impulse...

..The approach proposed in this paper assists in the exploration of the high-dimensional parameter space of the cell models and the identification of the conditions leading to spontaneous pacemaker activity...