View clinical trials related to Atrial Fibrillation.
Filter by:Atrial Fibrillation (AF) It is the most common arrhythmia in the world. It carries great public health significance because of its prevalence, additional morbidity and mortality. It provides a 4-5 times higher risk of developing a ischemic stroke or transient ischemic attack. In term, this risk can be 70% reduced by taking oral anticoagulants. Actionable AF is the overarching term for silent AF (asymptomatic AF) and undertreated AF (known AF, but not sufficiently protected against ischemic stroke). It is recommended that over the age of 65, patients should be screened with pulse palpation or rhythm strip for the presence of AF. The MyDiagnostick is a single-lead I, compact hand-held device that analyses heart rhythm during one minute. During preoperative consultation, this device will be used to value the yield of screening for actionable AF.
Atrial fibrillation (AF) is the most preventable cause of stroke. However, despite widely available risk stratification tools, five options for oral anticoagulation, and evidence-based practice guidelines, anticoagulation for stroke prevention in AF is consistently under-prescribed. Data from this center (Brigham and Women's Hospital [BWH]) (1) demonstrate that fewer than 50% of outpatients with AF at high-risk for stroke according to 2012 Focused Update of the European Society of Cardiology Guidelines for the Management of AF (2) receive anticoagulation. Aim #1: To determine the impact of electronic alert-based computerized decision support (CDS) on prescription of anticoagulation in high-risk AF patients in the outpatient setting who are not being prescribed anticoagulation for stroke prevention. Hypothesis #1: Electronic alert-based CDS will increase prescription of anticoagulation by 80% in high-risk AF patients in the outpatient setting who are not being prescribed anticoagulation for stroke prevention. Aim #2: To determine the impact of electronic alert-based computerized decision support (CDS) on the frequency of stroke and systemic embolic events in high-risk AF patients in the outpatient setting who are not being prescribed anticoagulation for stroke prevention. Hypothesis #2: Electronic alert-based CDS will reduce the frequency of stroke and systemic embolism in high-risk AF patients in the outpatient setting who are not being prescribed anticoagulation for stroke prevention. Data acquired through this study regarding the frequency of stroke and systemic embolism will be used to calculate sample size requirements for a future clinical end-point driven randomized controlled trial of electronic alerts to prevent stroke in high-risk AF patients.
In this trial the Preventives Heartbeats algorithm will be tested in two wearable devices for its specificity and sensitivity to distinguish between AF and SR.
The purpose of this study is to study the effects of transthoracic electrical cardioversion for restoration of sinus rhythm in patients who present with recent onset atrial fibrillation, with regard to new silent cerebral thrombo-embolic lesions and cognitive function, as well as electrical and functional/structural reverse remodelling, and its effects on inflammatory changes / specific cardiac biomarkers, vasoactive peptides, coagulation activity, and active fibrinolysis.
The purpose of this study is to observe the safety and effectiveness of the AMPLATZER™ Cardiac Plug (ACP) device in Chinese population indicated for use of AMPLATZER™ Cardiac Plug after its market approval by China FDA (CFDA). This is a prospective, multi-centre, single arm, post approval, observational study. The clinical study will be conducted at up to 35 sites in China. Approximately 343 subjects will be enrolled in this study. The total study duration is expected to be approximately 7 years. The study population included patients who have non-valvular atrial fibrillation (NVAF) and are contraindicated to long-term oral anticoagulant; or patients who experience stroke or other thromboembolic event despite taking warfarin. Scheduled office visits occur at 45 days (+45 days), 6M (+/- 3 weeks) 12M (+/- 6 weeks) and 24 M(+/- 6 weeks) post procedure; Phone contact follow up visits occur at, 36 M (+/- 6 weeks), 48M (+/- 6 weeks) and 60 M (+/- 6 weeks) post procedures.
The purpose of this research is to test the clinical value of a new P-wave sensitive recording vector compared to a standard ECG limb lead II vector from similar easy-to-use long-term cardiac rhythm monitoring patch systems, the Carnation TM Ambulatory Monitoring (CAM) System and the Zio-XT iRhythm. The P-wave is a critical aspect of the electrocardiogram. The purpose of this study is to see if the P-wave centric focus of the CAM system improves arrhythmia diagnosis.
In order to understand the risks and benefits of edoxaban use in a real-world clinical setting in the Non valvular Atrial Fibrillation (NVAF) indication, Daiichi-Sankyo proposed this non-interventional study to gain insight into the safety (bleeding, liver adverse events, all-cause mortality and other drug related adverse events) and efficacy of edoxaban use in non-preselected patients with NVAF.
Atrial fibrillation (AF) is the most common sustained heart rhythm abnormality. Its incidence is increasing partly due to the ageing population and it has been referred to as a growing epidemic. AF results in irregular contractions of the heart causing unpleasant symptoms of palpitations and increasing the risk of stroke, heart failure and death. Percutaneous catheter ablation is a safe treatment option in symptomatic patients with AF. The success rate of these procedures have improved with time due to our better understanding of AF, development of new techniques and technology, and greater physician experience. However, the success rate of these procedures still only remains around 70%. This is contributed to our limited ability to find the areas that drive the AF. STAR mapping is a novel mapping system that has been developed with a view of better identifying the sites that drive AF, through taking into account the mechanisms of AF that have already been demonstrated. Data from this study will be used to refine the identification of drivers in the fibrillation left atrium with enormous potential to simplify ablation and improve success rates and thereby reducing the need for further procedures. To better validate this mapping system the investigators also aim to use it in participants with atrial tachycardia (AT), which is a heart rhythm abnormality of which the mechanism can be readily identified with the existing mapping systems used in clinical practice. The investigators will demonstrate that the STAR mapping algorithm can effectively map AT. To gain further understanding of the changes that occur in the left upper chamber of the heart in the context of AF half of the participants with AF will undergo cardiac magnetic resonance imaging to assess for the presence of scar. This will enhance our understanding of how atrial remodelling promotes AF, which may point to ways of modifying this process and preventing AF.
The overall goal is to improve outcomes among patients with atrial fibrillation (AF) by preventing stroke. The investigators propose to implement an automated algorithm using electronic medical record (EMR) data to alert physicians in a large primary care practice network at the Massachusetts General Hospital (MGH) of their patients with AF and elevated stroke risk that are not taking an anticoagulant for stroke prevention. The investigators hypothesize that interventions to notify physicians of such individuals may prompt reassessment for the need for anticoagulation, and thereby increase guideline-indicated anticoagulation rates. Additionally, in a survey component, physicians will characterize reasons for not pursuing anticoagulation in AF patients at elevated risk for stroke.
Patients receiving Novel Oral Anticoagulation (NOACs) undergo diagnostic and therapeutic procedures at a rate of 10% per year. Short half-lives and rapid onset of action allow for short periods of NOAC interruption without heparin bridging. There is only minimal information on the peri-procedural usage pattern of edoxaban and the related outcome data currently available. Therefore, further real-world clinical data on the peri-procedural usage pattern of edoxaban within any diagnostic or interventional procedure in patients with non-valvular atrial fibrillation (NVAF) or venous thromboembolism (VTE) will be collected in this registry.