View clinical trials related to Atrial Fibrillation.
Filter by:Atrial fibrillation (AF) impacts the lives of 30 million people worldwide. Pulmonary vein isolation (PVI) by catheter ablation is effective for paroxysmal AF, but the success rate remains marginal at 60-80%. For persistent AF, defined as continuous AF that sustains longer than 7 days, the success rate is even lower. The low success rate of AF ablation reflects the fact that there is no effective target identified to modify the underlying substrate beyond PVI. Recently, investigators have made an exciting discovery that higher mean CT attenuation values of peri-atrial fat tissue, correlated with inflammatory fat, are associated with higher incidence of recurrence after AF ablation. In this protocol, investigators will investigate the clinical significance of peri-atrial inflammatory fat tissue in AF using ultra-high resolution CT.
Cryoablation combined with left atrial appendage closure is a novel strategy for atrial fibrillation patients. Through long-term follow-up, the investigators aimed to observe the safety and efficacy of the combined procedure in Chinese population.
In this study researchers want to learn more about the patient's and treating doctor's concerns about possible bleedings during treatment with drugs preventing blood clots in blood vessels and the heart - so called blood thinner. The study also wants to find out more about the patient's knowledge on the importance, risks and benefits of treatment with this drug group. Patients with irregular heartbeat not caused by valvular heart disease who will start treatment with a blood thinner will be asked by their treating cardiologist to complete a questionnaire related to their knowledge and fear of possible bleedings or stroke (blockage or rupture of a blood vessel to the brain) due to the intake of a blood thinner. The treating doctor will complete a similar questionnaire. The study plans to involve 15 cardiologists and 300 patients in Belgium.
The purpose of the ULTRA-HFIB Pilot is to determine the role of adjunctive renal denervation (RDN) in the prevention of Atrial Fibrillation (AF) recurrence in patients scheduled for an AF ablation procedure. Patients will be randomized to either i) AF ablation (Control) or ii) AF ablation + renal sympathetic denervation (Intervention).
To ensure a successful percutaneous left atrial appendage (LAA) closure, it is important to select the correct size of the closure device used for each patient. To define and measure the size of the LAA, 2D transesophageal echocardiography (TEE) has been typically used. An increasing number of hospitals recently switched to measure the size of the LAA using a cardiac computed tomography (CT) scan. Although this CT scan helps to better define and measure the LAA, it is still difficult to determine the exact anticipated 'landing zone' or 'position' of the closure device. A novel strategy of preprocedural planning includes the use of preoperative computer simulations based on CT imaging (Feops HEARTguideTM), where the device is deployed with a computer simulation into the patient-specific LAA anatomy to provide the operator both optimal and suboptimal scenario's showing different sizes and positions of the closure device. The aim of this study is to assess whether use of FEops HEARTguide computer simulations based on cardiac CT-imaging can contribute to a better preprocedural planning and improved procedural outcomes of percutaneous LAA closure procedures with an Amplatzer Amulet device. The PREDICT-LAA trial will investigate the possible positive effect of a computer simulation using a CT scan of the LAA performed prior to the procedure. The hypothesis is that by using this new computer simulation, better planning of the intervention can be obtained.
This a prospective randomized trial occurring in patients undergoing routine ablation for atrial fibrillation as standard of care. The purpose of this study is to determine if using a small internal suture (or "stitch") facilitates faster times to hemostasis (stopping bleeding) after removing intravenous sheaths (special IVs that are used for ablation procedures) after an atrial fibrillation ablation procedure. The device used to place the stitch is PerClose Proglide and is an already FDA-approved technology for closing these IV sites. The study will also determine if it is safe to get up and walk sooner than what is considered typical after closing these IV sites with the PerClose device. Participants will be randomized in a 1:1 ratio to either manual compression or use of the PerClose for hemostasis at the end of the ablation procedure. The length of follow-up will be up to 30 days at routine clinical follow-up after the procedure.
The goal of this study is to validate the Fitbit ECG software algorithm's ability to detect atrial fibrillation using data derived from a Fitbit wrist-worn consumer device that features a single lead ECG. The performance of the software application will be measured against centralized Core Lab physician-adjudicated 12-lead ECG tracings from FDA cleared ECG monitors as reference standards. The Fitbit software is intended as a pre-screening technology. It should identify candidates who may benefit from further evaluation. The software is not intended to be a diagnostic system.
In this multi centre prospective study authors will evaluate atrial fibrillation (AF) recurrence at 360 days follow-up and calcium handling in patients treated by epicardial thoracoscopic ablation for persistent AF. Indeed, responders patients to epicardial ablation will experience sinus rhythm restoration after the treatment, and will be in sinus rhythm until follow-up end. However, from October 2014 to June 2016, 27 consecutive patients with persistent AF will be identified and screened for participation in this prospective, multicenter trial at Catholic University of Sacred Heart, Campobasso, at University Study of Molise, Campobasso, at Vecchio Pellegrini Hospital, Naples and at University of Campania "Luigi Vanvitelli", Naples, Italy. All patients will receive an epicardial thoracoscopic pulmonary vein isolation. Before interventions, baseline laboratory studies, B type Natriuretic Peptide (BNP) and serum Sarcoplasmic Endoplasmic Reticulum Calcium ATPase (SERCA) will be evaluated. These markers will be re-evaluated at 12th month of follow-up. Therefore, study hypothesis will be that successful epicardial ablation might reduce, in responders patients, the SERCA expression. Parallely, a lower serum expression of SERCA in patients with persistent AF might potentially identify a response to an epicardial ablative approach, and an innovative target to improve the response to an epicardial ablative treatment.
While it is well known that stopping or changing medication with blood thinners in patients who suffer from non-valvular atrial fibrillation (NVAF) increases the risk of ischemic stroke (a condition which occurs when a vessel supplying blood to the brain is obstructed), bleeding or thromboembolism (a condition that happens when a blood clot forms elsewhere in the body and travels through the blood stream to plug another vessel), limited data are available on the number of NVAF patients and the reasons why NVAF patients in Italy stop or change their treatment with blood thinners to prevent stroke or thromboembolism. By following the NVAF patients in routine clinical practice in Italy who are treated with rivaroxaban to prevent stroke or systemic embolism researchers want to find out how many NVAF patients and for what reasons NVAF patients stopped or changed rivaroxaban treatment. Study data will be collected through patients' routine visits at their treating doctor over a period of 24 months for each patient.
The MANDATE-AF study was designed to address evidence needs in India for device-based management of AF using AT/AF (Atrial Tachycardia/Atrial fibrillation) diagnostic features and therapies such as Reactive Atrial anti tachycardia Pacing (rATP) within Medtronic Cardiac Implantable Electronic Devices (CIED)and its impact on the time to persistent AF and progression of AT/AF.