Active clinical trials for "Atrial Fibrillation"

To assess interactions between selected cardiovascular medications and genes in the incidence of heart attack, stroke, and atrial fibrillation, an irregular heartbeat.

Left ventricular (LV) diastolic dysfunction is a common manifestation of heart disease that is responsible for significant morbidity and mortality.It is present when the ventricular filling is impaired as a result of delayed relaxation or decreased compliance. During Coronary artery bypass grafting (CABG) surgery, LV diastolic dysfunction is a frequent occurrence. Failure of the left ventricle to dilate normally causes an increase in LV filling pressure. Atrial fibrillation (AF) is a common complication after cardiac surgery affecting 20-30% of patients undergoing coronary revascularization procedures. AF is associated with significant morbidity and mortality and has been identified as a causative factor of increased length of both hospital and intensive care unit (ICU) stay after CABG surgery, resulting in increased resource utilization and medical care costs.The primary aim of this study is to determine if patients with preoperative diastolic dysfunction are exposed to higher risk of AF after coronary revascularization surgery.

The purpose of this study is to determine whether irbesartan will reduce the rate of recurrent atrial high rate episodes and the development of clinical sustained atrial fibrillation in patients with hypertension and permanent pacemaker.

The investigators' goal with this research is to: Establish a clinical database and a DNA bank for 1000 individuals with AF and 1000 individuals without AF. Directly test the hypothesis that known functional polymorphisms in the coding sequences and the promoter regions of cardiac genes (ion channels and genes known to affect survival in the setting of left ventricular dysfunction) predispose individuals to AF. Over the past decade, advancing techniques and technologies for gene characterization have yielded significant clues as to the molecular mechanism of certain human heart rhythm disorders. The role of ion channel polymorphisms in subjects with AF is unknown. Similarly, it is also not known whether polymorphisms in other genes have an impact on the risk of AF. The ability to characterize genomic "at-risk" profiles would have many potential benefits for patient care. Paramount among these is: Increased oversight or intervention of at-risk subjects, which might prevent unnecessary morbidity and mortality due to AF. Further insight into the pathogenesis of AF, which may lead to preventative or curative therapies.

To acquire a better understanding of the spontaneous clinical behavior of paroxysmal tachycardia by studying epidemiologic features of symptomatic tachycardia patients.

This retrospective single-centre study aims to examine the success rate of concomitant surgical ablation in patients with atrial fibrillation (AF) with an up to eight years follow-up period. Moreover, the focus of this study was to identify variables which predict freedom from AF, such as the type of AF, lesion set performed, energy source used and the patient's characteristics.

AFGen1 is indicated for use on symptomatic or asymptomatic adults who are at risk of developing or who have atrial fibrillation, where a software assisted analysis of ambulatory ECG is needed to identify episodes of Afib. The purpose of this study is to establish the clinical performance of the AFib-Chek device (a.k.a. Device) on human participants.

The single-center HERA AFIb registry was created to assess real-world prevalence, demographic characteristics and management of patients with atrial fibrillation (AF) in the era of novel oral anticoagulant regimes (NOAC) presenting in the emergency department (ED) of University of Heidelberg

The aim of this study is to quantify and characterize the outcomes of radiofrequency (RF) ablation after, and the utility of, electroanatomical mapping with the market-released HD mapping catheters Inquiry™ AFocusII™ Double Loop and Advisor™ HD Grid, Sensor Enabled™ with the EnSite Cardiac Mapping System and the EnSite Automap module in subjects with AF in the real-world environment of the Asian population.

The purpose of this study is to examine whether patients can use the AliveCor case to record their heart rhythm and to assess the accuracy of the software in detecting AF vs sinus rhythm