View clinical trials related to Atrial Fibrillation.
Filter by:This is a an investigator-initial, multicenter, open-label, randomized, parallel-group comparative study to evaluate the effect on the incidence of AF and pacemaker dependence in SSS patients receiving physiological atrial-based pacing alone or adding losartan 100mg to physiological atrial-based pacing treatment. The duration of the study will be approximately 13 months, comprising 4-week pre-study period, and 12-month treatment period.
Experimental data suggest that angiotensin II-antagonists reduce the atrial expression of prothrombotic adhesion molecules and oxidative stress parameters. The present study is designed to investigate the effects on angiotensin II-antagonist irbesartan to reduce the amounts of circulating oxidative stress markers and adhesion molecules in patients with persistent atrial fibrillation.
We conduct a randomized study comparing the safety and effectiveness of two interventional ablation techniques for treatment of paroxysmal atrial fibrillation: the segmental pulmonary vein ablation approach, (1) with empiric isolation of all pulmonary veins or (2) Segmental Isolation of the arrhythmogenic pulmonary vein(s)
To test the hypothesis that localized functional reentry maintains Afib in humans, ibutilide will be administered intravenously in patients undergoing an Afib ablation. The hypothesis of this study is that ibutilide will decrease the high frequency signals observed in Afib suggesting the presence of micro reentrant circuits as the basic mechanism of Afib, especially for the paroxysmal Afib group. The potential difference in response to the ibutilide in patients with paroxysmal versus persistent Afib may show the difference in the underlying mechanism of Afib between these two groups.
The purpose of this study is to investigate if breathing disorders are related to atrial fibrillation and if it is possible to predict recurrence of atrial fibrillation after DC-conversion by changes in heart rate variability and 24 hour ECG.
The atrial fibrillation (AF) is the most common cardiac rhythm disturbance that is responsible for substantial morbidity and mortality independent of associated heart disease or other risk factors. Even in the absence of preexisting cardiovascular disease, AF remains significantly associated with excess mortality rates. The current unsatisfactory treatment for AF comes from lack of understanding of the pathophysiology of AF. The purpose of this study is to identify gene polymorphisms that confer susceptibility to atrial fibrillation. Patients with AF（N=500） and healthy volunteer（N=1000） without AF are enrolled in this study. Patients with coronary artery disease, severe valvular heart disease, cardiomyopathy or heart failure were excluded from the study.
B8: Atrial fibrillation and the risk of neurological complications Twenty-five thousand acute strokes are caused by atrial fibrillation every year. But even more frequent than symptomatic strokes are silent infarctions of the brain. Silent strokes remain undetected in most cases, but cumulate over time and progressively impair cognition. The impact of atrial fibrillation on subacute brain infarctions is not yet known. Moreover, it has not been elucidated so far how effective different therapeutic strategies in the treatment of atrial fibrillation prevent cognitive impairment. Thus, this study aims at evaluating the influence of different types of atrial fibrillation on silent strokes and the related impairment in cognitive functions. Other risk factors and cardiovascular diseases that are known to provoke the development of strokes will be assessed as well. So, it will be possible to isolate the contribution of atrial fibrillation to silent strokes and related cognitive impairment in segregation to other relevant factors. AF patients and controls will be examined twice in two years in order to evaluate the role of atrial fibrillation and differential therapeutic interventions with regard to the progression of silent strokes and cognitive impairment in a within subject-design.
We hypothesize that reduced dose of enoxaparin in elderly patients will result in reduced proportion of patients with therapeutic anti Xa activity and reduced clinical efficacy.
Atrial fibrillation is a very common complication of pulmonary resection. Patients who develop atrial fibrillation require additional treatment and are more likely to stay in the hospital for longer period of time increasing the costs associated with the operation. We propose a randomized controlled trial to see if oral amiodarone given for one week before surgery can prevent atrial fibrillation after pulmonary resection. We plan to evaluate the incidence of atrial fibrillation in patients who received preoperative amiodarone and compare them to the incidence of atrial fibrillation in patients who did not received preoperative amiodarone.
The purpose of this study is to determine whether there is a relationship between ventricular lead position and the incidence of heart failure and atrial fibrillation in patients with indication for permanent pacemaker stimulation.