View clinical trials related to Atrial Fibrillation.
Filter by:The aim of this study is to compare the safety and efficacy of edoxaban and warfarin for prevention of stroke during a 6-month follow up after total thoracoscopic ablation.
The purpose of this study is to better understand the following aims: 1. Aim 1: To evaluate the rate of recurrent Atrial Fibrillation (AF)/Atrial Flutter (AFL) in hematopoietic stem call transplant (HCST) patients with incident AF/AFL identified during the initial 30 days of the transplant 2. Aim 2: To evaluate incident episodes of 1) stroke/TIA; 2) other thromboembolic events (not stroke/TIA); 3) Heart failure events; 4) Ischemic heart events 3. Aim 3: To evaluate overall implantation safety in this population
Shared Decision-Making: AFib 2gether™ is a research study that focuses on a mobile application developed by Pfizer, Inc with consultation from Dr McManus' called AFib 2gether™. Through this app, patients can determine their risk of stroke due to atrial fibrillation and prioritize questions and concerns for discussion with their cardiology provider.
His bundle pacing has been proposed as a superior alternative to standard right ventricular pacing. The purpose of this study is to investigate whether obtaining a His Bundle recording from the subclavian vein using a stylet driven pacemaker lead and commercially available sheath can be done in a quick and reliable manner. This would support the use of stylet driven leads for His bundle pacing.
Life-long therapy with oral anticoagulants (OAC) is strongly recommended in AF patients receiving left atrial appendage isolation (LAAI) to prevent thromboembolic (TE) events. However, some patients are observed to remain stroke-free while off OACs for years whereas others experience TE events if OAC is discontinued even for a short period of time. Therefore, we aim to evaluate the association of genetic variants (single nucleotide polymorphisms - SNPs) with off-anticoagulation stroke-risk in AF patients.
Atrial arrhythmia is the most frequent cardiac arrhythmia. It is a source of significant morbidity. Hypertension is a major risk factor for atrial arrhythmias. Primary hyperaldosteronism (PA) is a common cause of secondary hypertension, associated with a high prevalence of arrhythmias with a specific, sometimes curative, treatment. The purpose of the study is to show that the prevalence of PA among hypertensive patients under 65 years old with atrial arrhythmia is high, justifying systematic screening.
Under current practice, patients with persistent atrial fibrillation, can be offered one of two types of ablation treatment. Both of these treatments are aimed at electrically isolating the 4 pulmonary veins (PVs) at the back of the heart which connect it to the lungs. These PVs have been identified to serve as the sites where the abnormal heart rhythm is generated. One of the treatments is called radiofrequency (RF) catheter ablation, where 'heat energy' is delivered through the tip of a catheter to make tiny burns (ablation lesions) around the outlines of the 4 PVs at their bases. The other treatment technique utilises a 'cold balloon' (Cryoenergy or cryoballoon ablation) to freeze the bases of the 4 PVs to achieve the electrical isolation. Sometimes the treated tissues develop reconnections that can lead to a recurrence of the abnormal heart rhythm, and thus the need for a repeat procedure. In this study, participants will receive a second treatment 2 months after the first one. During the second treatment, investigators will check to identify areas that have developed reconnections since the first treatment; these will be treated again. This will increase the chances of all participants having a complete treatment. In order to improve understanding of how best to treat this condition, investigators will also carry out some further measurements within the heart during the repeat procedure. During these measurements, investigators will check to see if treatment has succeeded in reducing the occurrence of an abnormal heart rhythm. In the group of participants in whom RF energy is used for the initial procedure, investigators will also treat the back wall of the heart, and repeat these measurements.
1. Study name: Intensive management of blood pressure and cholesterol in elderly Chinese with hypertension and atrial fibrillation (IMPRESSION) 2. Medicine: amlodipine/atorvastatin (5/10mg tablet); amlodipine/atorvastatin (5/20mg tablet); allisartan (240mg/tablet). 3. Rationale: controlling blood pressure and cholesterol are both effective means to reduce cardiovascular risks, however, it is still unknown whether high cardiovascular risk patients with atrial fibrillation would benefit from intensive management of blood pressure and cholesterol. 4. Objective: To evaluate the efficacy and safety of intensive management of blood pressure and cholesterol. 5. Study design: This study is a multi-center, randomized and controlled clinical trial with four equally sized treatment groups: amlodipine/atorvastatin (5/10mg tablet); amlodipine/atorvastatin (5/20mg tablet); amlodipine/atorvastatin (5/10mg tablet)+allisartan (240mg/tablet); amlodipine/atorvastatin (5/20mg tablet)+allisartan (240mg/tablet). 6. Study population: Men and Women aged over 65 years (n=1200) meeting the inclusion/exclusion criteria. 7. Randomization and treatment: After stratification by centers, eligible patients will be randomly divided into four groups, taking amlodipine/atorvastatin (5/10mg tablet) once a day or amlodipine/atorvastatin (5/20mg tablet) once a day or amlodipine/atorvastatin (5/10mg tablet)+allisartan (240mg/tablet) once a day or amlodipine/atorvastatin (5/20mg tablet)+allisartan (240mg/tablet) once a day. 8. Follow up: 3 years. 9. Sample size: a total of 1200 patients should be enrolled in the combination. 10. Timeline: After obtaining the approval of Ethics Committee of Ruijin Hospital in September 2019, recruitment will start. Patients enrollment will be performed between November 2019 to November 2020. All patients should be followed up before December 2023.
Ultrasensitive Electroanatomic Mapping to Adjudicate Endpoints for Ablation In Paroxysmal AF Patients Using Cryoballoon
In the RedStroke study, the effect of a smartphone application in detecting Atrial Fibrillation (AF) will be assessed in a double-blind randomised controlled multicenter trial. Outpatients with an elevated risk for atrial fibrillation will be randomized to an intervention arm (app group) and to a standard-of-care arm (control group). Both groups will have the app installed on their private smartphones and will be asked to perform a predefined measurement protocol. All patients will continue their prior therapy with their general practitioner and obtain every medical treatment indicated. This study will not cause any restrictions on the usual treatment of the study patients. The only difference between the two groups will be, that patients in the app group will be informed by their local PI, if the recordings of the app indicate AF (and obtain a 14 day Holter ECG for AF verification), whereas the patients in the "usual care" group will obtain the read out of the app at the end of the study.