P Jais

..As an adjunct to this strategy, we used a new high-density mapping catheter and frequently used epicardial mapping...

..This prospective clinical study evaluates the feasibility and efficacy of combined linear mitral isthmus ablation and pulmonary vein (PV) isolation in patients with paroxysmal atrial fibrillation (AF)...

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..Noninducibility of AF has been shown to be associated with freedom from arrhythmia in 87% of patients...

..The mainstay of treatment for atrial fibrillation (AF) remains pharmacological; however, catheter ablation has increasingly been used over the last decade. The relative merits of each strategy have not been extensively studied...

..Atrial tachycardia (AT) occurring following catheter ablation of persistent atrial fibrillation (AF) may be challenging to map and ablate because their mechanism and location is unpredictable and may be multiple in an individual patient...

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

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

..The procedure is currently offered to symptomatic patients having had at least one episode every ten days in spite of antiarrhythmics...

..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)...

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

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

..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...

..We report a case of left atrial dominant rhythm demonstrated by electroanatomic mapping. The rhythm occurred after radiofrequency catheter ablation in a patient with persistent atrial fibrillation and structural heart disease...

..The long-QT and Brugada syndromes are important substrates of malignant ventricular arrhythmia. The feasibility of mapping and ablation of ventricular arrhythmias in these conditions has not been reported...

..In addition, ablation should be started when the catheter is radiologically stable and should not be interrupted in the absence of a junctional rhythm...

..Despite these limitations and with an acceptable rate of complications, this approach appears preferable to His bundle ablation in young patients with symptomatic paroxysmal atrial fibrillation resistant to antiarrhythmic therapy...

..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...

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

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

..We describe the role of nonablated anterior left atrium (LA) in arrhythmias observed after AF ablation...

..The aim of the present study was to assess the feasibility of identifying sites of focal atrial activity by localized high-density endocardial mapping during atrial fibrillation (AF)...

..Atrial fibrillation (AF) is frequently initiated from pulmonary veins (PVs), but little is known of the electrophysiological properties of PVs...

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

..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...

..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...

..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...

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

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

..This article details our experience with catheter ablation therapy for patients with persistent and chronic AF...

..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...

..To evaluate the contribution of the posterior left atrium (LA) to chronic atrial fibrillation (AF)...

..Conduction block across the left mitral isthmus (LMI) seems more challenging to achieve and validate compared with the cavotricuspid isthmus (CTI)...

..Most of the patients with left atrial flutter have an underlying structural heart disease, but their arrhythmia is amenable to curative catheter ablation...

..We report a case of radiofrequency catheter ablation for chronic atrial fibrillation, in which electrical disconnection of the coronary sinus was necessary to isolate a trigger initiating atrial fibrillation...

..The stepwise approach benefits from the integration of anatomic and electrophysiologic information to achieve a high level of success in termination of chronic AF by catheter ablation...

..While being effective in the termination of AF, this configuration of linear lesions is technically challenging to complete, results in significant delayed LA activation, and is associated with modest long-term arrhythmia suppression...

..However, achievement of complete conduction block remains challenging and conduction recovery is commonly observed. The aim of the study was to investigate the localization of gap sites of recovered LA linear lesions...

..This case demonstrates that, in rare cases, arrhythmogenic muscular sleeves can be found in the IVC and that the IVC can be electrically disconnected from the right atrium using radiofrequency energy...

..Ablation at these sites results in prolongation of the AFCL and termination of paroxysmal AF, indicating their role in the maintenance of AF...

..We evaluated sinus node function and clinical outcome in patients with prolonged sinus pauses on termination of arrhythmia who underwent ablation of paroxysmal AF...

..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...

..The purpose of this study was to assess whether additional ablation in the right atrium (RA) improves termination rate in long-lasting persistent atrial fibrillation (PsAF)...

..Women with Brugada Syndrome...

..An atrial tachycardia is rightly seen as a failure of AF ablation, as these tachycardias are poorly tolerated by patients. This article describes a simple, practical approach to diagnosis and ablation of these atrial tachycardias...

..We investigated whether remote ICD monitoring could simplify follow-up and detect potential complications in these patients...

..This study sought to investigate the impact of accessing the left atrium via a PFO on paroxysmal AF ablation...

..This two-centre study evaluated a new automatic computed tomography (CT)-fluoroscopy overlay system (EP navigator, Philips Medical Systems, Best, The Netherlands) and the accuracy of different registration methods...

..The long-term consequences of these early recurrences (ER) are controversial. We investigated whether ER were predictive of late recurrences and the impact of early reablation on clinical outcome...

..Assess the impact of persistent/permanent atrial fibrillation (AF) ablation on endocrine and mechanical cardiac functions...

..This study sought to determine the characteristics of atrial electrograms predictive of slowing or termination of atrial fibrillation (AF) during ablation of chronic AF...

..At present, an implantable cardioverter-defibrillator (ICD) is the recommended therapy in high-risk patients. This multicenter study reports the outcome of a large series of patients implanted with an ICD for Brugada syndrome...

..The purpose of this study was to characterize the occurrence of phrenic nerve injury (PNI) and its outcome after radiofrequency (RF) ablation of atrial fibrillation (AF)...

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..RF catheter ablation may be a cost-effective alternative to long-term drug therapy in patients with symptomatic, drug refractory PAF...

..The challenge for the next years is ablation of premature ventricular beats initiating ventricular fibrillation. The technique is also improving from day-to-day (88% success rate) and makes rise the hope of curing sudden death...

..At the end of each phase, an echocardiogram, a hemodynamic analysis at rest and during a 6-minute walking test and a cardio-pulmonary exercise test were performed...

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..Accordingly, such patients should be more actively identified for early intensive treatment and survey...

..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...

..We prospectively evaluated the use of the LocaLisa three-dimensional nonfluoroscopic catheter imaging system with the aim of reducing fluoroscopy times during pulmonary vein (PV) disconnection...

..Individually optimized sequential BVP provided a significant early hemodynamic improvement compared with simultaneous BVP...

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..These data may influence the choice of individual optimal pacing configuration...

..We evaluated the acute achievement of electrical PV isolation using this approach. In addition, the consequences of wide encircling of the PVs with isolation were assessed...

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

..To test this hypothesis, we evaluated the frequency spectra in patients with paroxysmal AF in relation to catheter ablation...

..The mechanism of these initiating arrhythmias is unknown. The aim of this study was to determine electrophysiological characteristics of canine pulmonary veins that may predispose to initiating arrhythmias...

..The goal of this study was to characterize the origin of focal atrial tachycardias (AT)...

..There are no reports describing the technique, electrophysiological evaluation, and clinical consequences of complete linear block at roofline joining the superior pulmonary veins (PVs) in patients with paroxysmal atrial fibrillation (AF)...

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..This multicenter study sought to evaluate the long-term follow-up of patients ablated for idiopathic ventricular fibrillation (VF)...

..The isthmus block observed following initial ablation of the mitral-pulmonary vein appeared to be pacing cycle dependent and to our knowledge has not been previously described...

..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...

..Whether arrhythmia termination during ablation is associated with an improved clinical outcome is controversial...