View clinical trials related to Atrial Fibrillation.
Filter by:The purpose of this study is to determine if Apixaban is safer than a Vitamin K Antagonist given for 6 months in terms of bleeding in patients with an irregular heart beat (atrial fibrillation) and a recent heart attack or a recent procedure to open up a blood vessel in the heart. All patients would also be taking a class of medicines called P2Y12 inhibitors (such as clopidogrel/Plavix) and be treated for up to 6 months. The primary focus will be a comparison of the bleeding risk of Apixaban, with or without aspirin, versus a Vitamin K antagonist, such as warfarin, with or without aspirin.
Atrial fibrillation(AF) is the most common sustained arrhythmia in humans. The loss of rate-dependent action potential duration(APD) adaptation is one of the characteristics of atrial fibrillation, but detailed understanding of mechanism is limited. Thus, we propose to utilize the monophasic action potential recording data from human patients in three groups, control, paroxysmal and persistent atrial fibrillation, and apply reverse engineering method to quantify the extent of electrical remodeling of ionic channel parameters using a mathematical model of atrial cell. Our approach will be useful in developing drug targets for ion channels in atrial fibrillation patients.
The purpose of this study is to determine whether dabigatran is associated with higher risk of bleeding in Asia area especially in China clinical practice and whether it need to set up a monitor system.
Stroke is a leading cause of mortality, morbidity and rising healthcare cost worldwide. In 'real-world' practice, AF is often diagnosed too late at time of stroke and detection can be difficult because AF may be present without symptoms and intermittent in nature. Furthermore, utilization of adequate oral anticoagulation therapy (OAC) for stroke prevention is suboptimal in Hong Kong. The challenge is to identify AF prior to occurrence of stroke. The latest European guidelines recommend opportunistic screening for people >=65 years by pulse palpation followed by 12-lead ECG. However, 12-lead ECG requires a trained technician, time consuming, requires the patient to lie on an examination couch and is not readily available in most outpatient clinics in Hong Kong. A practical screening test is needed. Our study aims to evaluate the feasibility, acceptability and incremental cost of an outpatient based AFscreening program using the AliveCor device. Newly diagnosed AF patients will be randomized to routine care versus individualized stroke prevention strategy which consists of patient education, stroke and bleeding risk assessment, evidence-based OAC recommendation, patient audit and follow-up to improve OAC utilization for stroke prevention. We envisage this study will provide timely evidence to inform policy decisions concerning population-based AF-screening for AF for stroke prevention.
This is a control registry to the E-FIRM registry to track conventional atrial fibrillation (AF) procedures in terms of clinical usage, handling, and the safety and effectiveness for the treatment of symptomatic atrial fibrillation. Conventional AF ablation is defined as pulmonary vein isolation (PVI) and any additional ablation for AF according to the standard routine of the center. Data items will be collected, if available, consistent and applicable with routine and standard clinical care at each participating site.
The ASSERT-III study aims to determine the incidence of sub-clinical (silent) atrial fibrillation (AF) among elderly patients with hypertension and at least one other risk factor for AF. This will be accomplished by monitoring with a wireless external loop monitor for 30 to 60 days.
The 12-lead ECG is an essential tool in cardiovascular assessment. Novel technology has the potential to improve the diagnostic yield of arrhythmias, whilst improving the patient experience. The RhythmPadGP is a novel device which acquires a 6-lead ECG without the need for the patient to undress. The aim of the study is to assess the ability of the device to diagnose cardiac rhythms. Simultaneous recording of the RhythmPadGP 6-lead ECG will be undertaken at the same time as the standard 12-lead ECG. The 12-lead ECGs and 6-lead ECGs will be analysed by a Cardiologist, who will be blinded to each set of ECGs and the automated diagnostic report produced by the RhythmPadGP device. Such a novel diagnostic tool could replace the standard 12-lead ECG for rapid assessment and diagnosis of arrhythmias. Additionally, as calls for a national screening programme to detect atrial fibrillation (and prevent AF-related thromboembolism) currently intensify, the RhythmPad has the potential to revolutionise how we screen our patients.
Atrial fibrillation (AF) is a major treatable risk factor for stroke, but it may be hard to detect because it is frequently silent and intermittent. New ambulatory cardiac monitoring technologies have the potential to improve early detection of AF. This trial investigates AF screening in primary care patients using the ZIO XT Patch, a wearable adhesive patch monitor that provides continuous ECG recording for up to 14 days, in addition to the WatchBP home blood pressure monitor that has built-in AF screening capability.
In this study, the investigators therefore comparatively analyzed the mid-term results (at 1 year) including electrocardiogram, 24 hour Holter monitoring, and 2 week long-term electrocardiogram of thoracoscopic ablation and RFCA performed individually or as a hybrid procedure in patients with long-lasting persistent atrial fibrillation. Antiarrhythmic medication, discontinuation of anticoagulation medication, and echocardiographic findings were also analyzed.
Atrial fibrillation is a common heart rhythm disturbance, causing important discomfort for patients, a high risk of stroke, frequent hospital admissions and a two-fold increase in death. The number of patients with this condition are expected to double in the next 20 years. Medications to control heart-rate are used in the majority of patients, although the choice of agent is often guided by local preference rather than evidence from controlled trials. Despite the fact that patients with atrial fibrillation have high rates of other cardiac conditions such as heart failure, clinicians have insufficient evidence to personalise the use of different therapies. This feasibility study will allow us to develop a range of methods that can characterise patients according to the pumping and relaxing function of the heart, the burden of symptoms and to identify new blood markers. In this way, the investigators hope to improve clinical practice guidelines, allowing doctors to prescribe appropriate treatments for the right patients. The research will be focused around a randomised trial of two medication strategies, providing much-needed data on the comparison of digoxin and beta-blockers (two commonly-used drugs in patients with atrial fibrillation). It will also allow us to identify the best way to record patient-reported quality of life and develop robust techniques to determine heart function using non-invasive imaging, facilitating the conduct of a large-scale clinical trial. The key objectives of the research programme are to define the optimal medications for patients with atrial fibrillation and identify the most valid, reproducible and cost-effective methods to examine patients. The ultimate aim of the project is to improve clinical outcomes in atrial fibrillation, benefiting patients, the National Health Service and the global community.