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Outcomes of ablation with the FARAPULSE PFA System – a nonthermal treatment in which electric fields selectively ablate heart tissue – will be compared to outcomes following use of anti-arrhythmic drug (AAD) therapy, which is commonly prescribed for patients living with persistent AF. Circulation. Not available for sale.
Titled "Real-world Data Affirms Safety and Effectiveness of Low/Zero Fluoroscopy Atrial Fibrillation Ablation," the study was presented as a late-breaker at the 29th Annual International AF Symposium. Biosense Webster's zero fluoroscopy workflow is the first and only such workflow available in a radiofrequency (RF) cardiac ablation device.
Herein, we provide an overview of the current knowledge on the pathophysiology and risk factors for AF in adult congenital heart disease, with a special focus on the existing challenges in AF ablation. Emerging imaging modalities and ablation techniques might have a role to play.
Catheter ablation can be used as a safe and effective palliative treatment approach for management of atrial arrhythmias in Fontan patients. Atrial arrhythmias are considered a major late complication in the aging Fontan population and are associated with significant morbidity and mortality.
Circulation, Ahead of Print. Background: Intramural site of origin is a major cause of ablation failure of ventricular arrhythmias and the optimal strategy is unclear. Radiofrequency ablation was performed from the closest endocardial site in the left (LVOT) and/or right ventricular OT (RVOT) independent of the local activation time.
Circulation, Ahead of Print. BACKGROUND:Current outcomes from catheter ablation for scar-dependent ventricular tachycardia (VT) are limited by high recurrence rates and long procedure durations. Predicted optimum ablation sites to terminate all VTs in the models were identified.
The prediction of atrial fibrillation (AF) progression and post-ablation recurrence is currently based on empirical estimates, leading to suboptimal predictive accuracy.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. Patients were randomly assigned to either the PVI+SVC ablation group or the PVI-only group. CONCLUSIONS:The addition of SVC ablation to PVI did not enhance freedom from atrial tachyarrhythmia at 12 months, and it led to increased complications. versus 72%;P=0.41).
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:It is difficult to identify patients with atrial fibrillation (AF) most likely to respond to ablation. We compared 6 machine learning models to predict acute and long-term end points after ablation and used Shapley explainability analysis to contrast phenotypes.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. We investigate whether additional linear ablation from the superior vena cava to the right atrial septum and cavotricuspid isthmus ablation improves the rhythm outcome of patients with persistent AF undergoing cryoballoon PVI (Cryo-PVI).METHODS:In
Circulation, Volume 150, Issue Suppl_1 , Page A4141954-A4141954, November 12, 2024. Flow simulation results showed that ablation of index valve leaflets can effectively mitigate the flow obstruction caused by sinus sequestration in redo-TAVR, with the extent of restoration dependent on the number and location of the ablated openings (Fig.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Power-controlled radiofrequency ablation with irrigated-tip catheters has been the norm for ventricular ablation for almost 2 decades. Four and one of these sets of parameters were further tested in phases II and III, respectively. mm), withP<0.05
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. Background:Pulsed field ablation (PFA) has emerged as an alternative to radiofrequency ablation. However, data on focal point-by-point PFA are scarce.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Epicardial approach in ventricular tachycardia (VT) ablation is still regarded as a second-step strategy, due to the risk of complications. The epicardial approach was considered useful if epicardial ablation was performed after epicardial mapping.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Inflammation may promote atrial fibrillation (AF) recurrence after catheter ablation. The first dose of the study drug was administered within 4 hours before ablation. 1.61];P=0.92) or at 3 months following ablation (14% versus 15%; HR, 0.95 [95% CI, 0.45–2.02];P=0.89).
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Sequential application of radiofrequency with pulsed field (PF) ablation may increase lesion depth while preserving the advantages of PF. Ablations were performed with a force-sensing 3.5-mm Radiofrequency was delivered at 50 W for 10 s (15 mL/min).
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:The effect of contact force (CF) on lesion formation is not clear during pulsed field ablation (PFA). Further studies are required to evaluate the best PFA ablation settings to achieve transmural lesions.
Circulation, Volume 150, Issue Suppl_1 , Page A4141066-A4141066, November 12, 2024. Background:Clinical studies on atrial fibrillation (AF) recurrence after catheter ablation in patients diagnosed with patent foramen ovale (PFO) and paroxysmal AF (PAF) are scarce.
Circulation, Volume 150, Issue Suppl_1 , Page A4141988-A4141988, November 12, 2024. Background:Catheter ablation (CA) is an effective treatment for atrial fibrillation (AF), but many patients experience recurrence post-intervention. The addition of LAVI values provided better discrimination for the ROC model.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. Background:Effects of contact force (CF) on lesion formation during pulsed field ablation (PFA) have not been well validated. mm ablation electrode and CF sensor (TactiCath SE, Abbott) was connected to a PFA system (CENTAURI, Galvanize Therapeutics).
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:High-power short-duration ablation has shown impressive efficacy and safety for pulmonary vein isolation (PVI); however, initial efficacy results with very high power short-duration ablation were discouraging.
Circulation, Ahead of Print. In addition, new recommendations addressing atrial fibrillation and thromboembolic risk assessment, anticoagulation, left atrial appendage occlusion, atrial fibrillation catheter or surgical ablation, and risk factor modification and atrial fibrillation prevention have been developed.
Circulation: Arrhythmia and Electrophysiology, Ahead of Print. BACKGROUND:Epicardial radiofrequency catheter ablation (RFCA) of idiopathic ventricular arrhythmias (VAs) originating from the left ventricular summit (LVS) is challenging because of the anatomic barriers.
Circulation, Ahead of Print. BACKGROUND:During the neonatal stage, the cardiomyocyte undergoes a constellation of molecular, cytoarchitectural, and functional changes known collectively as cardiomyocyte maturation to increase myocardial contractility and cardiac output.
In contrast to other tachycardias, with atrial fibrillation (AF), the focus is often speculative, and ablation attempts are made accordingly. Pulmonary veins have been the primary target for ablation for many years, yet the success rates remain inconsistent. Implications for electrophysiologists.
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