View clinical trials related to Atrial Fibrillation.
Filter by:Atrial fibrillation (AF) has been the most frequently occurring, sustained arrhythmia, which causes significant morbidity and mortality. AF may not always be a totally random process. It can be maintained by stable and rapid reentrant circuits resulting in fibrillary conduction throughout the atria. During mapping of AF, difficulty is frequently encountered during the identification of culprit sites and an analysis of the wave propagation particularly when the electrogram signals demonstrate wide temporal and spatial disparities. Catheter ablation targeting regions with fractionated potentials or high frequencies during AF, has been previously proposed as a treatment strategy. However, the benefit of adjunctive CFAE (complex fractionated atrial electrogram) ablation or linear ablation after successful PVI (pulmonary vein isolation) was controversial based on the recent data from the Substrate and Trigger Ablation for Reduction of Atrial Fibrillation Trial Part II (STAR AF II) trial. Therefore, the optimal ablation strategy for persistent AF remains undetermined and an alternative approach has to be explored.
Introduction: Non-vitamin K antagonist oral anticoagulants (NOAC) is the first line therapy to prevent ischemic stroke or systemic thromboembolism among atrial fibrillation (AF) patients. Since 2016, our study team enrolled patients under NOAC therapy in National Taiwan University Hospital, and measured their NOAC concentration to develop a cohort of NOAC treatment and NOAC concentration. Study purpose: Based on the cohort of NOAC therapy, we aim to investigate factors driving high or low NOAC concentration, and link NOAC concentration to clinical outcomes. Methods: For all the participants in the cohort, we will retrieve their basic characteristic, concurrent medications, laboratory tests and clinical outcomes such as ischemic stroke, systemic thromboembolism, intracranial hemorrhage, major bleeding and death from the electronic medical records. The NOAC concentration will be compared to the expected range reported in clinical trials to define higher, within or lower than expected range. Univariate logistic regression will be used first, followed by multivariate logistic regression to investigate factors associated with high or low NOAC concentration. The relationship between NOAC concentration and clinical outcomes will be investigated by using the Cox proportional hazard model.
The study aims to examine the effect of nurse-led education program on quality of life, atrial fibrillation (AF) risk factors, AF symptomatology, arrhythmia recurrence rate, and readmission rate after AF catheter ablation.
Atrial fibrillation (AF) is a serious public health problem because of its increasing incidence and prevalence in the aging population. ECG is the most commonly used gold standard for clinical diagnosis of arrhythmias, but conventional ECG examinations are not adequate for long-term ECG follow-up measurements in patients with AF. In this study, the AF patients will wear an watch and ECG patch to continuously monitor ECG and PPG. The software uses an integrated diagnostic mechanism of "AF burden + AF segments" to efficiently analyze ECG and PPG data, which can quickly and accurately identify the occurrence of AF and analyze AF burden in real-time, facilitating physicians' diagnosis and treatment and efficacy assessment.
This is a prospective study to evaluate changes in exercise capacity and chronotropic response to exercise before and after beta-blocker dosage reduction in patients with atrial fibrillation (AF).
This is a prospective, single-arm study conducted in University Hospital of Split, Department of Cardiology. Patients treated with PFA for symptomatic paroxysmal atrial fibrillation will be asked to participate in the study. An implantable loop recorder (ILR) will be placed immediately after the PFA procedure for rhythm monitoring. Early recurrences will be subsequently divided into very early recurrences (up to 1 month post-procedure) and early recurrences (1-3 months post-procedure). Late recurrences will be defined as those 3 to 12 months post-procedure. Patients will be monitored routinely through follow up visits during which ILR will be interrogated and eventual symptoms will be assessed. Follow-up visits will be scheduled 1, 3, 6, 12 months post-procedure. Median follow-up will be 12 months. Data for the study will be obtained from a loop monitor to assess the arrhythmia burden during follow-up visits in the University Hospital of Split Arrhythmia Clinic.
Myocardial infarction with non-obstructive coronary arteries (MINOCA) (i.e.<50% stenoses) on coronary angiography) is an underappreciated clinical entity concerning 5-6% of patients with acute myocardial infarction. Approximately 50% of these patients remain without appropriate diagnosis and treatment. The MINOCA study aims at systematically assessing the frequency of underlying pathologies of MINOCA and outcomes with a multidisciplinary etiologic work-up and follow-up of 5 years including, for the first time, an implantable cardiac monitor (ICM) to assess the frequency of atrial fibrillation as underlying cause for MINOCA.
The incidence of atrial fibrillation (AF) after lung resection varies between 12% and 30% after lobectomy and 23%-67% after pneumonectomy. The average time of onset of AF after lung resection is 2-3 days. AF after pulmonary resection can cause symptoms, hemodynamic instability, and stroke.Furthermore, AF following pulmonary resection may triple the mean duration stay in the intensive care unit and increase the total length of hospital stay by 2-9 days, with an increased in associated hospitalization costs.lastly, AF after lung resection has been associated with an increased risk of mortality , although the arrhythmia is more likely to be a consequence of other associated cardiopulmonary complications, rather than the main cause of death. our study aim to assess the role of intra operative dexmedetomidine in reduction of early postoperative atrial fibrillation in patients undergoing thoracic non cardiac surgeries. Objectives: 1. To evaluate possible efficacy of intraoperative dexmedetomidine in reduction of postoperative atrial fibrillation in patients undergoing thoracic non cardiac surgeries 2. To determine the incidence of new-onset atrial fibrillation after thoracic non cardiac surgeries in patients given intra operative dexmedetomidine
Based on the population pharmacokinetic data of Chinese patients with atrial fibrillation, the study will evaluate the suitability of the ENGAGE Population Pharmacokinetics model of edoxaban in patients with atrial fibrillation in China, and build a predictive dose model of edoxaban that meets the characteristics of Chinese people. It can provide perfect individualized dosing plan improves clinical efficacy and reduces adverse drug reactions.
Study types and hypotheses: multicenter randomized controlled trials. This study predicts that standardized anticoagulation management of atrial fibrillation in primary health care institutions can reduce the prevalence of atrial fibrillation stroke by 50%. 1. Formulation and revision of standardized anticoagulation management plan and process for atrial fibrillation in primary health care institutions. Using the mature anticoagulation management model of atrial fibrillation for reference, based on the clinical data and disease management needs of patients with atrial fibrillation in five community health service centers in Xicheng District of Beijing. To formulate the anticoagulation management plan and process of atrial fibrillation suitable for grass-roots medical institutions. After the completion of the first draft of anticoagulation management plan and process, two rounds of multi-disciplinary experts were organized to demonstrate the feasibility and scientific nature of the first draft. Finally, based on the practice and effect evaluation of clinical application management, the scheme is revised and improved. 2. To evaluate the feasibility and clinical application effect of standardized anticoagulation management scheme and process for atrial fibrillation. First of all, the baseline clinical database of patients with multicenter atrial fibrillation was established; secondly, patients with atrial fibrillation who met the entry criteria were randomly included in the trial group or control group and followed up for two years. The anticoagulation treatment rate, the incidence of bleeding and thromboembolic events, anticoagulation compliance rate and knowledge awareness rate of atrial fibrillation in the two groups were compared, and the effect of standardized anticoagulation management of atrial fibrillation in primary medical institutions was evaluated.