Active clinical trials for "Atrial Fibrillation"

Recent studies demonstrated that radiofrequency isolation of the pulmonary veins (PVI) and surgically video assisted thorascopic pulmonary vein isolation (VATS-PVI) are acceptable or even superior alternatives to antiarrhythmic drug therapy in patients with symptomatically paroxysmal atrial fibrillation (AF). However, data comparing effectiveness in both interventions are limited. The investigators want to compare the effectiveness of PVI and VATS-PVI. Secondary objectives are to compare the duration of hospitalization, quality of Life, cost and to compare the satisfaction of the patients.

The aim of this study is to evaluate whether dabigatran reduces clopidogrel mediated ADP induced platelet aggregation measured by MEA as compared to phenprocoumon after a two-week treatment with either agent.

The study will determine the benefit of Colchicine versus placebo for cardiac surgery patients on the post-operative development of atrial fibrillation and post-pericardiotomy syndrome. Primary Objective. Colchicine will reduce the composite endpoint of incidence of post-operative atrial fibrillation and post-pericardiotomy syndrome at 3 months following cardiac surgery. Secondary Objectives. Colchicine will reduce the incidence of constrictive physiology on echocardiography at 3 months following cardiac surgery. Reduction in the burden of symptomatic and asymptomatic atrial fibrillation in the 3 months following cardiac surgery with the use of colchicine.

The purpose of Part 1 of this study is to determine the maximally tolerated dose of OPC-108459 in patients with paroxysmal and persistent atrial fibrillation (AF). The purpose of Part 2 of this study is to determine potential efficacy of dose(s) of OPC-108459 for the treatment of paroxysmal and persistent atrial fibrillation.

The purpose of this study is to test the efficacy of a single injection of Canakinumab on AF recurrences within 6 months after electrical cardioversion in patients with persistent AF.

A substantial proportion of patients undergoing elective coronary artery bypass grafting have a history of paroxysmal atrial fibrillation. Paroxysmal atrial fibrillation has adverse short-and long term postoperative effects. Pulmonary vein isolation (PVI) seems to be effective treatment for paroxysmal atrial fibrillation. PVI can be done concomitantly with coronary artery bypass grafting, aortic valve replacement for aortic stenosis and combination of them. Procedure is well defined and safe. There is a lack of convincing evidence of the effect on postoperative atrial fibrillation burden, quality of life and symptoms especially in correlation with atrial fibrillation paroxysms.

This study is being done to see if the addition of mangosteen juice to standard medical care will reduce the risk of atrial fibrillation (AF) recurrence following direct current (DC) cardioversion. The study will also look at the effects the mangosteen juice may have on biomarkers of inflammation and endothelial cell dysfunction (the tissue lining the arteries does not function properly).

Atrial Flutter [AFL] is a relatively frequent arrhythmia, considered as benign, but associated with both invalidating symptoms and thromboembolic risk. The objective of the treatment consists to on the one hand the sinus rhythm [SR] restoration and on the other hand the prevention of the long-term recurrence. In this clinical setting, AFL radiofrequency ablation [RFA] became the first line therapy due to its both high effectiveness and safety. The effectiveness of AFL RFA is attenuated by the subsequent risk of atrial fibrillation [AFib] close to 25% at 1 year. This risk of subsequent AFib is related to the common substrate between both arrhythmias. When AFib occurs, the interest to maintain the SR is still required, even if recent studies did not show a significant difference in term of total mortality between rate or rhythm control strategies [AFFIRM, RACE and PIAF studies]. The studies published underlined the anti-arrhythmic drugs limits in patients with both arrhythmias [AFib and AFL]. After years centered on the mechanisms and the electric treatments of AFib, researchers are nowadays focusing on the study's evaluation of the atrial tissue substrate. Accordingly, the renin-angiotensin system role was investigated in many works. Indeed, angiotensin II plays a role in the modification of atrial pressure and in the fibers stretching ["stretch"], conditions required for the development of AFib. Angiotensin II is also a factor implied in the tissue fibrosis leading to tissue proliferation and collagen alteration. These mechanisms lead to atria cells conduction disorders and refractory periods modification. Moreover, the enzyme of conversion expression and the angiotensin II receptors deterioration were observed in patients with AFib. This brings to the concept of AFib treatment while interfering on tissue remodeling by the way of renin-angiotensin system. Drugs such as the angiotensin converting enzyme inhibition [ACEI] may reduce AFib in patients with heart failure. No randomized study so far has compared the ACEI drugs against placebo among high-risk patients of AFib in post AFL RFA area. On the basis of experimental and clinical study, the investigators seek to evaluate the ACEI use in the prevention of AFib in an AFL post RFA ablation.

The purpose of this study is to determine whether early atrioventricular node (AVN) ablation with pacing device therapy will reduce death and hospitalization when compared to the conventional drug therapy in elderly patients with recurrent and symptomatic atrial fibrillation (AF).

Patents with atrial fibrillation can be treated with the purpose of curing the arrhythmia.This may be achieved by catheter ablation and Maze surgery where the latter includes open heart surgery. By catheter ablation the arrhythmia can be cured in about 70 % of patients who have episodes of atrial fibrillation. In patients with permanent atrial fibrillation the results are not as good. We will compare a conventional ablation approach where lesions are created on the inside of the heart with a thoracoscopic approach where the lesions are created from the outside of the heart.