Active clinical trials for "Atrial Fibrillation"

To validate the prognostic importance of the burden of new-onset atrial fibrillation (NOAF) complicating acute myocardial infarction (AMI) in a prospectively designed hospital-based registry. To characterize those factors that contribute to the progression of post-MI NOAF burden. To establish a prediction model for the risk stratification of patients with NOAF complicating AMI. To explore the clinical usefulness of NOAF burden in guiding the anticoagulation therapy among patients with post-MI NOAF.

Pulmonary vein isolation (PVI) is still considered the cornerstone of catheter ablation for patients with persistent atrial fibrillation (AF). However, ablation outcomes in patients with persistent AF are suboptimal with high recurrence rates after a single PVI procedure. Recently, the investigators developed a new strategy, which enables precise identification of the driver regions allegedly responsible for the maintenance of persistent AF outside the pulmonary veins. This approach uses a conventional electroanatomical mapping system and novel single-signal algorithms based on automatic and accurate analysis of the instantaneous amplitude and frequency modulations displayed by atrial signals during AF (iAM and iFM, respectively) to locate the spatiotemporally stable regions that drive persistent AF (leading drivers). This strategy also enables to identify highly complex substrates in which targeting leading driver regions with catheter-based ablation may not be feasible or could be potentially associated with a significantly higher risk of complications. In such patients, the iAM/iFM maps obtained in the index catheter mapping and ablation procedure will be used to guide an additional patient-specific, minimally invasive surgical ablation approach via thoracoscopy, aiming to completely but specifically target all leading driver regions. The main objective of the TAILOR-AF study is to identify (via iAM/iFM maps), target and ablate AF leading drivers in patients with symptomatic persistent AF recurrences despite ≥2 previous PVI procedures. The methods include a percutaneous catheter mapping and ablation approach followed by a minimally invasive surgical approach via thoracoscopy, if necessary. As a secondary objective we will study the association of underlying blood biomarkers, atrial imaging and surface ECG parameters, with advanced remodeling stages requiring a surgical approach to target leading driver regions. This is a single center study (Hospital Clínico San Carlos, Madrid, Spain) that will recruit 25 patients with symptomatic persistent AF episodes despite having been submitted to ≥2 PVI prior procedures. All patients will undergo subcutaneous implantable loop recorder (ILR) implantation to address AF burden 1 month before the ablation procedure and at least 1 year after the ablation procedure. The primary outcome of the study will be AF freedom after one year of follow-up off antiarrhythmic drugs.

This study is to describe the exact location of NOAF-maintaining foci and rotors after cardiac surgery identified by mapping using the non-invasive phase mapping with CardioInsightTM - 3D Mapping technology (CardioInsightTM, Medtronic Switzerland, Tolochenaz, Switzerland) and a low-dose computed tomography scan of the chest.

This study aims to investigate the use of anticoagulants in elderly patients with non-valvular atrial fibrillation (NVAF) and the incidence of frailty in elderly patients with NVAF. After two years follow-up, we observe the incidence of thrombotic events and the influence of frailty on thrombotic events in elderly patients with NVAF.

Antithrombotic drugs, which include antiplatelet and anticoagulant therapies, are used to prevent and treat many cardiovascular disorders. With the increase in prevalence of cardiovascular diseases and medical progress, these treatments are increasingly being prescribed, particularly in older patients. One of the main indications of antithrombotic drugs is atrial fibrillation (AF), a disease highly prevalent in older people, a population at high risk of adverse drug events. Notably, antithrombotic drugs are the first involved in serious adverse drug events, among which 40-70% may be preventable. In this context, six units of the hospital group "Assistance Publique - Hôpitaux de Paris" have created a multidisciplinary team which assesses antithrombotic prescriptions in older patients with AF. This team, gathering geriatricians, cardiologists, neurologists and haematologist specialized in haemostasis, evaluates the patient medical profile and suggests the most appropriate antithrombotic treatment based on their expertise and the available recommendations. Here we want to look at patients outcomes in light of the intervention of this multidisciplinary team.

The multicenter Cardiology Monitoring Platform registry (mCMP-registry) is a prospective observational registry including multi-omics (diagnostic) measurements performed as part of routine clinical care, bio-banking (optional), and yearly questionnaires (optional). It's objective is to optimize (early) diagnosis and risk-stratification of (early) cardiovascular diseases, specifically cardiomyopathy phenotypes, arrhythmias, and coronary artery disease, and to create a better understanding of underlying pathophysiological processes.

Registry of patients with atrial fibrillation undergoing catheter-based ablation of atrial fibrillation (pulmonary vein isolation) to determine long-term success rates of catheter-based ablation of atrial fibrillation (pulmonary vein isolation) and to evaluate factors associated with long-term success of catheter-based ablation of atrial fibrillation (pulmonary vein isolation).

A prospective cohort study to evaluate the association between various triggers encountered in daily life and induction of atrial arrhythmias (atrial fibrillation, atrial flutter, atrial tachycardia and premature atrial contractions) with the use of long-term monitoring devices. The collected data of personalized triggers and risk factors will be used to define the individual phenotype of atrial arrhythmia.

This study is a case-control study. In this study, 2ml of vein blood samples were collected from patients with atrial fibrillation undergoing radiofrequency ablation and those in the control group who underwent electrophysiological examination alone and confirmed no arrhythmia. The purpose of this study is to identify the relationship between the aldehyde dehydrogenase 2 (ALDH2) gene polymorphism and susceptibility to atrial fibrillation, and to explore the relationship between the genotype of ALDH2 SNP and the prognosis of patients with atrial fibrillation undergoing radiofrequency ablation.

The study aims to evaluate the clinical, laboratory and instrumental differences that exist between beta-thalassemia patients with atrial fibrillation and those not affected by arrhythmia.