View clinical trials related to Atrial Fibrillation.
Filter by:The purpose of this study is to characterise which fractionated electrogram morphologies are important to target in the catheter ablation of atrial fibrillation.
This Continued Access Protocol has been written to allow ongoing treatment of subjects at selected investigational sites while the marketing application for the Arctic Front® Cryoablation System is under review. This study will also allow collection of additional safety data following modifications implemented into the Arctic Front® Catheter and Cryoablation System.
Atrial fibrillation (AF) is connected with an increased morbidity and mortality. In addition, quality of life is diminished due to palpitations, dyspnea, dizziness and syncope. AF is frequently associated with valvular and coronary disease. In the AF patients undergoing valvular or coronary surgery the arrhythmia almost always relapses. For symptom control anti-arrhythmic drugs and cardioversion are used but breakthrough arrhythmias and side effects of the drugs happen frequently. For more effective symptom control "add-on" arrhythmia surgery is being advocated. However, at present the investigators do not know whether add-on arrhythmia surgery indeed affects morbidity and quality of life. The hypothesis being studied is that add-on arrhythmia surgery in patients with AF undergoing valvular or coronary surgery improves quality of life, establishes chronic sinus rhythm and reduces perioperative and long-term morbidity associated with AF.
The purpose of this study is to learn whether the chemicals in the blood and urine are different when the heart is atrial fibrillation compared to normal sinus rhythm.
It is still uncertain what the best treatment is for patients who have both atrial fibrillation (AF) and heart failure. The aim of the study is to help identify the optimal treatment for patients with these two significant medical conditions. This will be performed by comparing two alternative strategies for AF management: catheter ablation (to restore normal rhythm) and medical therapy (to control heart rate, but not aiming ro restore normal rhythm). After random assignment, the effect of each strategy will be assessed by looking for changes in exercise capacity, symptoms, heart pump function, and quality of life during 12 months of follow-up.
The purpose of this study is to investigate whether in patients with early persistent atrial fibrillation and mild to moderate early heart failure an aggressive upstream rhythm control approach, including aldosterone receptor antagonists and statins, dietary restrictions, counseling and cardiac rehabilitation programs, increases persistence of sinus rhythm compared with conventional rhythm control after one year of follow-up. A randomized long term extension of the RACE 3 will be performed with a total follow-up of 5 years to investigate the long term effects on persistence of sinus rhythm and cardiovascular morbidity and mortality of the two treatment strategies.
The aim of this study is to evaluate whether performing complex fractionated atrial electrograms ablation improves outcomes in persistent or atrial fibrillation ablation.
Atrial fibrillation (AF) is a condition in which the upper chambers of the heart, the atria, undergo an irregular beating rhythm. Despite the fact that AF is the most common type of sustained cardiac rhythm disturbance the investigators still do not understand it entirely and its current therapies are only marginally effective. The overall goal of our project is to determine the organization and mechanisms of electrical activation patterns during AF in humans.
The SENSE-AF study aims to determine the performance of the OptiSense lead in sensing fine episodes of Atrial Tachyarrhythmia/Atrial Fibrillation (AT/AF) and rejecting Far-Field R Wave (FFRW). The performance of the lead will be measured as a difference in device-determined time in AT/AF and surface-ECG determined time in AT/AF. This measurement will be compared to the control group which will be randomized to receive SJM's Tendril™ RA leads.
The purpose of this study is to compare the effectivity and safety of atrial fibrillation ablation, in comparison to antiarrhythmic drug therapy in patients with refractory, persistent atrial fibrillation.