View clinical trials related to Paroxysmal Atrial Fibrillation.
Filter by:The purpose of this study is 3 fold:- 1. To compare the efficacy and complication rates of 2 widely used methods, conventional irrigation tip ablation catheter (LASSO) and Ablation Frontiers ablation technology, of AF ablation for PAF. 2. To evaluate the Reveal XT ILR as a long term accurate AF monitoring device as compared to the 'gold standard' DDD pacemaker Holter. 3. To accurately evaluate, by continuous rhythm monitoring for 1 year, the efficacy of AF ablation therapy for PAF.
The aim of the study is the comparison of two different leads in their capabilities to detect episodes and duration of paroxysmal atrial fibrillation (AF) and atrial tachyarrhythmia (AT), and the rejection of far field sensing of the far field R-wave (FFRW).
The purpose of this study is to accurately investigate the efficacy of dronedarone in maintaining sinus rhythm and decreasing AFB in patients with paroxysmal atrial fibrillation as compared with placebo. This has never previously been performed using pacemaker Holter monitoring which provides detailed information of atrial arrhythmia patterns the entire study period. Additionally detailed patient symptom self assessment and questionnaires will be collected. The study design will be double blinded crossover with each phase lasting 3 months.
Atrial fibrillation (AF) is the most common heart rhythm disorder, impairs quality of life and increases stroke risk and mortality. Despite advances in medical treatment, AF remains uncontrolled in many patients. In many patients, AF is initiated by abnormal electrical impulses from the pulmonary veins. A catheter ablation procedure called pulmonary vein isolation (PVI) has therefore been developed, using heat to isolate the PV foci from the heart. PVI is very effective, but must be repeated in up to 50% of cases because the foci isolation is not permanent after initial PVI. The intravenous administration of a drug called adenosine during the PVI procedure can unmask residual conduction that would otherwise remain unnoticed, so-called "dormant conduction". In our experience, additional ablation guided by adenosine reduces AF recurrence and the need for a repeat PVI procedure. However, the adenosine-guided approach has not yet been proven as standard therapy. The present study, to be conducted at 15 clinical centres in Canada, Europe and Australia is therefore intended to evaluate the efficacy of adenosine-guided ablation to prevent AF recurrence. Five hundred twenty-six patients will be included in the study, which should be completed within 2 years. In all patients, the presence of dormant conduction will be tested with adenosine during PVI. If dormant conduction is observed, additional ablation will be performed in half of these patients selected randomly. If there is no dormant conduction, randomly selected patients will be followed in a registry. If the adenosine-guided approach is demonstrated to improve the success rate of PVI procedures, it should become the standard approach for a "permanent cure" of AF, and therefore benefit patients by reducing arrhythmia recurrence, hospitalizations and the need for repeat interventions.
To compare the safety and chronic Pulmonary Vein isolation of 2 ablation types. 1. visually guided ablation (VGA) using the EAS-AC and 2. radiofrequency ablation
The purpose of this study is to test the safety and effectiveness of an Irrigated Ablation System for the treatment of symptomatic paroxysmal atrial fibrillation.
The purpose of this study is to determine the change in median radiation exposure time and median procedure time following guided radiofrequency (RF) ablation among subjects undergoing treatment for paroxysmal atrial fibrillation with either the CARTO® 3 or the NavX(TM) System. It is hypothesized that described features will reduce the median radiation exposure during the CARTO® 3 system-guided procedures compared to the NavX(TM) system-guided procedures.
This is a demonstration of safety and efficacy of the ablation for pulmonary vein isolation in the treatment of paroxysmal atrial fibrillation.
The purpose of this registry is to provide additional corroborative short-term safety and long-term safety data for the NAVISTAR THERMOCOOL and NAVISTAR EZ STEER THERMOCOOL catheters in the treatment of symptomatic Paroxysmal Atrial Fibrillation (PAF).
The purpose of this study is to determine the safety and effectiveness of the endoscopic ablation system - adaptive contact (EAS-AC) in treated paroxysmal atrial fibrillation (PAF) with pulmonary vein isolation (PVI).