Active clinical trials for "Atrial Fibrillation"

Fish oil therapy may decrease the incidence of cardiac arrhythmias. This study will test whether pre-treatment with fish oils before catheter ablation of atrial fibrillation decreases the early post operative occurrence of atrial fibrillation.

The purpose of this study is 1) to characterize T-cell response in patients with atrial fibrillation, and 2) to analyze the changes of T-cell response after radio-frequency catheter ablation of atrial fibrillation. First, immune-phenotyping and cytokine profiling of T cells from patients with atrial fibrillation will performed. Next the difference of T-cell immunity among various type of atrial fibrillation patients will be analyzed. Finally the changes of T-cell response and cytokines after radio-frequency catheter ablation of atrial fibrillation will be assessed.

This is a single centre prospective data registry. In this study atrial conduction characteristics of extended surface Electrocardiograms (esECG), biomarkers and genetic analysis will be performed before ablation, before discharge and 3 months after catheter ablation of atrial fibrillation (AF) and compared to routine clinical follow-up data. The objective of this registry is to establish a data registry of patients undergoing ablation of AF. Supplementary to the routine clinical diagnostic an esECG and an analysis of biomarkers will be performed and compared to clinical and outcome data.

The ablation of atrial fibrillation (FA) by disconnection of pulmonary veins is a burgeoning intervention. It allows a long-term treatment of this arrhythmia with a success rate of about 80%. There are, nevertheless, some recidivism. Risk factors for recidivism are poorly codified and need further research. Indeed the identification of factors of poor prognosis could lead to not propose this procedure to the patients who present them and at least to inform them of an increased risk of failure. To date, aortic stiffness has not been studied in the context of assessing the risk factors for FA recurrence after ablation. On a physiopathological level, the aortic stiffness leads to increase left ventricle's post-load. Cardiac remodeling was observed with diastolic dysfunction and increased left atrial size. That may constitute a substrate for FA recurrence. In the literature, aortic stiffness can be measured in several ways: Measurement of systolo-diastolic variation of the inner diameter of the aorta by scanner or transesophageal Echography (ETO). Measuring of the Pulse Wave Velocity. Measurement of aortic calcifications. The investigators propose to evaluate the impact of aortic stiffness on the recidivism of FA 6 months after ablation procedure performed in the Croix-Rousse cardiology's department.

Atrial Fibrillation (AF) is a common arrhythmia with a prevalence of 1.5-2%. This prevalence increases significantly after 80 years of age. After the appearance of first episode(s) some of the patients will present frequent arrhythmia recurrences moving from the paroxysmal status to the persistent and the permanent status of the continuous spectrum of the natural time course of AF. In contrast some other will not present further relapses. To study and predict the dynamic evolution of AF is clinically important, furthermore, the detection of different sub populations risk for AF relapses will determine and different therapeutic approaches.

"The aim of the study is to compare, in real life, the risk benefit (including both major bleeding and thrombotic events (TE) and death from any cause) associated with direct oral anticoagulants (DOAC) and with anti vitamin K (VKA) in older adults (≥ 75 years) suffering from nvAF. The study will be conducted in the French Health insurance database (SNIIRAM). Data of octo+ patients newly treated with an oral anticoagulant (VKA or DOAC) for non valvular atrial fibrillation (nv AF) will be collected from the first exposure of the patient to the drug of interest during the inclusion period to the end of the follow-up period (at least one year of follow-up for each patient)."

Our rationale of creation of this registry stems from the fact that the use of VKA in patients with AF is a double-edged sword, physicians face tremendous burden in assigning patients with VKA, due to risk of Bleeding complications despite its potential benefit. We intend to seek a safe and beneficial range of INR on Indonesian patients.

The purpose of this study is to compare the discontinuation rates for vitamin K antagonists and for direct oral anticoagulants during their first year

Ultrasensitive Electroanatomic Mapping to Adjudicate Endpoints for Ablation In Paroxysmal AF Patients Using Cryoballoon

Left atrial appendage (LAA) occlusion with WatchmanTM has emerged as viable alternative to anticoagulation therapy in randomized controlled trials. The device has FDA approved since 2015 and the firsts Latin American cases were performed in 2012. However, there is no real world data from Latin American experience in terms of success and outcomes.